Diversity

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Classify organisms into five kingdoms using cellular organisation and mode of nutrition

Subtopic

Classify organisms into five kingdoms using cellular organisation and mode of nutrition under Diversity for Grade 9 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$Why is Kingdom Monera considered the most primitive kingdom?$
A. $Because they are all autotrophs$
B. $Because they lack a well-defined nucleus$
C. $Because they are all multicellular$
D. $Because they have no cell wall$
2.
$Organisms that can be both autotrophic and heterotrophic depending on the availability of light are often placed in:$
A. $Monera$
B. $Protista$
C. $Fungi$
D. $Animalia$
3.
$Which kingdom consists of organisms that are eukaryotic and mostly unicellular?$
A. $Monera$
B. $Protista$
C. $Fungi$
D. $Plantae$
4.
$Kingdom Monera includes which of the following?$
A. $Spirogyra$
B. $Bacteria$
C. $Ferns$
D. $Insects$
5.
$Which of the following describes the cell wall of Kingdom Fungi?$
A. $Contains cellulose and lignin$
B. $Contains chitin and complex sugars$
C. $Contains peptidoglycan and amino acids$
D. $Cell wall is completely absent$
6.
$What is the main difference between the cellular organization of a mushroom and a bacterium?$
A. $Mushroom is prokaryotic; Bacterium is eukaryotic.$
B. $Mushroom is unicellular; Bacterium is multicellular.$
C. $Mushroom is eukaryotic and multicellular; Bacterium is prokaryotic and unicellular.$
D. $Mushroom has no cell wall; Bacterium has a cell wall.$
7.
$The five-kingdom classification does not include which of the following?$
A. $Bacteria$
B. $Fungi$
C. $Viruses$
D. $Algae$
8.
$The criteria of 'Mode of Nutrition' differentiates which of the following pairs most effectively?$
A. $Monera and Protista$
B. $Fungi and Plantae$
C. $Archaebacteria and Eubacteria$
D. $Unicellular and Multicellular organisms$
9.
$Paramecium and Amoeba were earlier placed in Kingdom Animalia. Why are they now in Kingdom Protista?$
A. $They are prokaryotic$
B. $They are unicellular$
C. $They are autotrophic$
D. $They have cell walls$
10.
$If an organism is a 'decomposer' and has a 'mycelium' body structure, it belongs to:$
A. $Monera$
B. $Protista$
C. $Fungi$
D. $Animalia$

Download the worksheet for Diversity - Classify organisms into five kingdoms using cellular organisation and mode of nutrition to practice offline. It includes additional chapter-level practice questions.

Apply binomial nomenclature and describe major divisions of plants and animals

Subtopic

Apply binomial nomenclature and describe major divisions of plants and animals under Diversity for Grade 9 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following has a four-chambered heart?$
A. $Rohu fish$
B. $Frog$
C. $Crocodile$
D. $Lizard$
2.
$The skeleton of an Arthropod is made up of:$
A. $Calcium carbonate$
B. $Chitin$
C. $Cartilage$
D. $Bone$
3.
$Which plant group includes organisms like 'Ferns'?$
A. $Thallophyta$
B. $Bryophyta$
C. $Pteridophyta$
D. $Gymnosperms$
4.
$Marsupials (like Kangaroos) give birth to very poorly developed young ones. They belong to:$
A. $Aves$
B. $Mammalia$
C. $Reptilia$
D. $Amphibia$
5.
$Which plant group is characterized by the presence of seeds but the absence of flowers and fruits?$
A. $Pteridophyta$
B. $Gymnosperms$
C. $Angiosperms$
D. $Bryophyta$
6.
$Which of the following groups of animals is entirely marine?$
A. $Mollusca$
B. $Arthropoda$
C. $Echinodermata$
D. $Annelida$
7.
$Ficus \ benghalensis$
A. $Genus$
B. $Division$
C. $Specific epithet$
D. $Order$
8.
$Why is the classification of organisms considered a dynamic process rather than a static one?$
A. $Because the number of organisms is decreasing$
B. $Because new species are discovered and molecular evidence changes our understanding of relationships$
C. $Because binomial nomenclature rules change every year$
D. $Because organisms are evolving so fast that their genus changes$
9.
$Identify the organism: It is eukaryotic, multicellular, has a cell wall, but cannot perform photosynthesis. It gets its nutrients from decaying organic matter.$
A. $Algae$
B. $Mushroom$
C. $Fern$
D. $Moss$
10.
$Which of the following groups consists exclusively of marine animals?$
A. $Porifera and Coelenterata$
B. $Echinodermata and Protochordata$
C. $Mollusca and Arthropoda$
D. $Annelida and Nematoda$

Download the worksheet for Diversity - Apply binomial nomenclature and describe major divisions of plants and animals to practice offline. It includes additional chapter-level practice questions.

Explain ecological roles of diverse organisms including lichens and viruses

Subtopic

Explain ecological roles of diverse organisms including lichens and viruses under Diversity for Grade 9 CBSE.

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Preview questions (no answers)

1.
$Diversity in ecosystems is maintained by lichens and viruses through:$
A. $Adding new species to the rock$
B. $Regulating population sizes$
C. $Providing food and nutrients$
D. $All of the above$
2.
$Ecologically, viruses help in 'recycling' nutrients by:$
A. $Eating dead plants$
B. $Lysing (breaking) host cells$
C. $Photosynthesis$
D. $Fixing nitrogen$
3.
$Which type of lichen is shrub-like or hanging?$
A. $Crustose$
B. $Foliose$
C. $Fruticose$
D. $None of these$
4.
$Usnic acid, an antibiotic, is obtained from:$
A. $Bacteria$
B. $Fungi$
C. $Lichens$
D. $Algae$
5.
$In the absence of lichens in a newly formed volcanic island, the process of soil formation would be:$
A. $Much faster$
B. $Much slower$
C. $Exactly the same$
D. $Impossible$
6.
$What is the role of the 'envelope' found in some viruses?$
A. $It acts as a digestive organelle$
B. $It helps the virus enter the host cell$
C. $It produces energy for the virus$
D. $It stores the virus's waste products$
7.
$Lichens that have a leaf-like appearance with distinct upper and lower surfaces are:$
A. $Crustose$
B. $Foliose$
C. $Fruticose$
D. $Gelatinous$
8.
$When comparing a lichen to a mycorrhizal association, what is a key difference?$
A. $Lichens are a symbiosis between fungi and algae, while mycorrhizae are between fungi and plant roots$
B. $Lichens are parasitic, while mycorrhizae are mutualistic$
C. $Lichens only occur in water, while mycorrhizae only occur on land$
D. $Mycorrhizae produce oxygen, while lichens do not$
9.
$Why are viruses considered important in the study of the origin of life?$
A. $They are the ancestors of all modern bacteria$
B. $They may represent remnants of the 'RNA world' or early genetic mechanisms$
C. $They were the first organisms to photosynthesize on Earth$
D. $They contain all the 20 amino acids in their capsid$
10.
$What role does the 'homoiomerous' or 'heteromerous' arrangement of cells play in lichen physiology?$
A. $It determines the color of the lichen$
B. $It refers to the distribution of algal cells within the fungal thallus, affecting photosynthetic efficiency$
C. $It defines whether the lichen reproduces sexually or asexually$
D. $It determines the speed at which the lichen can move across a rock$

Download the worksheet for Diversity - Explain ecological roles of diverse organisms including lichens and viruses to practice offline. It includes additional chapter-level practice questions.

India as a Biodiversity Hotspot

Subtopic

India as a Biodiversity Hotspot under Diversity for Grade 9 CBSE.

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Preview questions (no answers)

1.
$Biodiversity hotspots are areas with high species richness and high degree of:$
A. $Pollution$
B. $Endemism$
C. $Urbanization$
D. $Deforestation$
2.
$Which of these trees is very common in the deciduous forests of Central India?$
A. $Teak$
B. $Cactus$
C. $Pine$
D. $Seaweed$
3.
$Wildlife Protection Act in India was enacted in the year:$
A. $1947$
B. $1972$
C. $2001$
D. $2020$
4.
$What is the primary reason India is called a 'Mega-diverse' country?$
A. $It has a large population of people$
B. $It has a very large variety of plants and animals$
C. $It has many different languages$
D. $It produces many types of movies$
5.
$If a developer wants to build a highway through a 'Biodiversity Hotspot', what is the most likely ecological consequence?$
A. $Increase in species diversity due to new roads.$
B. $Habitat fragmentation leading to reduced gene flow between populations.$
C. $Helpful migration of species from other regions.$
D. $Stabilization of the local climate.$
6.
$Which region of India has the highest density of 'Sacred Groves' used for community-based conservation?$
A. $Thar Desert$
B. $Western Ghats and North-East India$
C. $The Indo-Gangetic Plains$
D. $The Rann of Kutch$
7.
$The term 'Species Richness' refers to:$
A. $The total number of individuals of one species in an area.$
B. $The number of different species present in a given community.$
C. $The economic value of a species.$
D. $The genetic variation within a single population.$
8.
$Which of the following is the 'Keystone species' of the alpine ecosystem in the Himalayan Hotspot?$
A. $Snow Leopard$
B. $Yak$
C. $Rhododendron$
D. $Alpine Grass$
9.
$Which factor is primarily responsible for the high 'Beta diversity' seen across the different regions of India?$
A. $Uniformity of the soil types.$
B. $The wide variety of climatic conditions and topographical features.$
C. $The use of the same crops in all states.$
D. $The lack of geographic barriers like mountains or rivers.$
10.
$The 'Chilika Lake' in Odisha is a significant biodiversity site because it is:$
A. $The largest freshwater lake in India.$
B. $A major wintering ground for migratory birds and a Ramsar site.$
C. $The site of the first nuclear power plant in India.$
D. $A region with zero biodiversity due to salinity.$

Download the worksheet for Diversity - India as a Biodiversity Hotspot to practice offline. It includes additional chapter-level practice questions.

How has the Biodiversity Evolved?

Subtopic

How has the Biodiversity Evolved? under Diversity for Grade 9 CBSE.

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Preview questions (no answers)

1.
$Organisms that can live both on land and in water are called:$
A. $Reptiles$
B. $Amphibians$
C. $Mammals$
D. $Pisces$
2.
$The presence of a 'canal system' for circulating water throughout the body is a feature of:$
A. $Sponges (Porifera)$
B. $Hydra (Coelenterata)$
C. $Starfish (Echinodermata)$
D. $Octopus (Mollusca)$
3.
$Crocodiles are an exception in the reptile group because they have a heart with how many chambers?$
A. $Two$
B. $Three$
C. $Four$
D. $One$
4.
$Which group of plants has seeds with two cotyledons?$
A. $Monocots$
B. $Dicots$
C. $Gymnosperms$
D. $Pteridophyta$
5.
$Which class of vertebrates contains animals that have hair on their body and produce milk to nourish their young?$
A. $Aves$
B. $Mammalia$
C. $Reptilia$
D. $Amphibia$
6.
$The classification of organisms is primarily based on their structure and function. As we go from species to kingdom, the number of common characteristics:$
A. $Increases$
B. $Decreases$
C. $Remains the same$
D. $First increases then decreases$
7.
$What is the common name for the phylum Platyhelminthes?$
A. $Roundworms$
B. $Flatworms$
C. $Segmented worms$
D. $Ringworms$
8.
$Which evolutionary concept explains why the wing of a bat and the wing of a bird are considered 'analogous' structures rather than 'homologous' structures in the context of flight?$
A. $They evolved independently for the same function but from different ancestral origins.$
B. $They are identical in bone structure but used for different purposes.$
C. $They both evolved from the fins of the same species of ancient fish.$
D. $One is a vestigial organ while the other is fully functional.$
9.
$The 'Haemocoel' is an evolutionary feature where the body cavity is filled with blood. In which of the following pairs of phyla is this found?$
A. $Arthropoda and Mollusca$
B. $Annelida and Arthropoda$
C. $Mollusca and Echinodermata$
D. $Nematoda and Annelida$
10.
$In the context of evolutionary hierarchy, which of the following taxonomic ranks contains the most diverse group of organisms with the fewest shared traits?$
A. $Kingdom$
B. $Phylum$
C. $Class$
D. $Order$

Download the worksheet for Diversity - How has the Biodiversity Evolved? to practice offline. It includes additional chapter-level practice questions.

How to Classify Organisms?

Subtopic

How to Classify Organisms? under Diversity for Grade 9 CBSE.

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Preview questions (no answers)

1.
$Marsupials (like Kangaroos) belong to which class?$
A. $Reptilia$
B. $Mammalia$
C. $Aves$
D. $Amphibia$
2.
$The system of naming organisms using two Latin names is called:$
A. $Polynomial nomenclature$
B. $Binomial nomenclature$
C. $Trinomial nomenclature$
D. $Unitary nomenclature$
3.
$Which of these is a characteristic of Reptilia?$
A. $Moist skin$
B. $Lay eggs with shells$
C. $Four-chambered heart (mostly)$
D. $Two-chambered heart$
4.
$In which plant group do we see the first occurrence of vascular tissues (xylem and phloem)?$
A. $Thallophyta$
B. $Bryophyta$
C. $Pteridophyta$
D. $Gymnosperms$
5.
$Based on the classification chart showing embryonic germ layers, in which groups would you place a Jellyfish (Phylum Coelenterata) and a Planaria (Phylum Platyhelminthes)?$
A. $Jellyfish in Group 1; Planaria in Group 2$
B. $Jellyfish in Group 2; Planaria in Group 1$
C. $Both Jellyfish and Planaria in Group 1$
D. $Both Jellyfish and Planaria in Group 2$
6.
$Identify the cold-blooded animal from the following list:$
A. $Pigeon$
B. $Bat$
C. $Snake$
D. $Cat$
7.
$Which of these characteristics is common to all mammals?$
A. $Giving birth to live young only$
B. $Presence of mammary glands and hair$
C. $Having a three-chambered heart$
D. $Laying eggs in water$
8.
$The classification of organisms into five kingdoms was primarily intended to resolve the ambiguity of which group?$
A. $Viruses$
B. $Unicellular organisms like Euglena that show both plant and animal traits$
C. $Multicellular algae$
D. $Parasitic worms$
9.
$What is the common name for the group of plants known as 'Cryptogams'?$
A. $Flowering plants$
B. $Seed-bearing plants$
C. $Non-flowering, spore-producing plants$
D. $Plants with naked seeds$
10.
$A student finds an aquatic animal with a streamlined body, gills for respiration, and a two-chambered heart. This animal most likely belongs to:$
A. $Amphibia$
B. $Pisces$
C. $Reptilia$
D. $Mammalia$

Download the worksheet for Diversity - How to Classify Organisms? to practice offline. It includes additional chapter-level practice questions.

The Need for Classification

Subtopic

The Need for Classification under Diversity for Grade 9 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$A group of related orders forms a:$
A. $Family$
B. $Genus$
C. $Class$
D. $Phylum$
2.
$Organisms that are mostly unicellular but some show multicellularity in certain stages belong to:$
A. $Monera$
B. $Protista$
C. $Animalia$
D. $Plantae$
3.
$Which category contains a group of related genera?$
A. $Species$
B. $Family$
C. $Order$
D. $Class$
4.
$The scientific name for a mango tree is:$
A. $Homo sapiens$
B. $Mangifera indica$
C. $Panthera leo$
D. $Pisum sativum$
5.
$If two organisms belong to the same Order, they must also belong to the same:$
A. $Family$
B. $Genus$
C. $Class$
D. $Species$
6.
$The term 'Division' in plant classification is synonymous with which term in animal classification?$
A. $Order$
B. $Phylum$
C. $Class$
D. $Family$
7.
$Rhizopus$
A. $Plantae$
B. $Protista$
C. $Fungi$
D. $Monera$
8.
$Which of the following is NOT a feature of the Class Mammalia?$
A. $Presence of sweat glands$
B. $Presence of oil glands$
C. $Presence of external ears (pinnae)$
D. $Three-chambered heart$
9.
$The presence of 'Cnidoblasts' or stinging cells is a characteristic of which phylum?$
A. $Porifera$
B. $Coelenterata$
C. $Platyhelminthes$
D. $Annelida$
10.
$Which of the following groups of plants is known as 'Phanerogams'?$
A. $Thallophyta and Bryophyta$
B. $Bryophyta and Pteridophyta$
C. $Gymnosperms and Angiosperms$
D. $Pteridophyta and Gymnosperms$

Download the worksheet for Diversity - The Need for Classification to practice offline. It includes additional chapter-level practice questions.

Biological Classification S ystems Over Time

Subtopic

Biological Classification S ystems Over Time under Diversity for Grade 9 CBSE.

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Preview questions (no answers)

1.
$Paramecium moves with the help of:$
A. $Pseudopodia$
B. $Flagella$
C. $Cilia$
D. $Tentacles$
2.
$The branch of biology that deals with the identification, naming, and classification of organisms is:$
A. $Ecology$
B. $Taxonomy$
C. $Physiology$
D. $Genetics$
3.
$Diatoms and Golden Algae are members of which kingdom?$
A. $Monera$
B. $Protista$
C. $Fungi$
D. $Plantae$
4.
$Yeast is an example of a unicellular organism from which kingdom?$
A. $Monera$
B. $Protista$
C. $Fungi$
D. $Animalia$
5.
$Kingdom Animalia is characterized by which of the following?$
A. $Unicellular prokaryotes$
B. $Multicellular autotrophs$
C. $Multicellular eukaryotes without cell walls$
D. $Unicellular saprophytes$
6.
$Which of the following scientists added the kingdom 'Monera' to the classification system?$
A. $Carl Linnaeus$
B. $Robert Whittaker$
C. $Herbert Copeland$
D. $Ernst Haeckel$
7.
$The system of naming organisms so that they have the same name all over the world is called:$
A. $Natural selection$
B. $Binomial nomenclature$
C. $Biological diversity$
D. $Evolutionary classification$
8.
$The primary objective of the modern biological classification system is to:$
A. $Reflect the evolutionary history and phylogenetic relationships of all life forms.$
B. $Create a list of all edible and non-edible species.$
C. $Organize organisms alphabetically for easier identification.$
D. $Ensure that every organism has at least three names.$
9.
$Which kingdom was the first to be added to the Two-Kingdom system to resolve the ambiguity of unicellular organisms?$
A. $Protista$
B. $Monera$
C. $Fungi$
D. $Archaebacteria$
10.
$Why is the use of common names (like 'Starfish' or 'Jellyfish') discouraged in biological classification?$
A. $They are often misleading and vary across different languages and regions.$
B. $They are always longer than scientific names.$
C. $Common names are only used for extinct species.$
D. $They do not allow for the use of the English language in science.$

Download the worksheet for Diversity - Biological Classification S ystems Over Time to practice offline. It includes additional chapter-level practice questions.

Five Kingdom Classification

Subtopic

Five Kingdom Classification under Diversity for Grade 9 CBSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following is not a kingdom in Whittaker's classification?$
A. $Monera$
B. $Protista$
C. $Archaea$
D. $Fungi$
2.
$The plant body in which the root, stem, and leaves are well differentiated is first seen in:$
A. $Thallophyta$
B. $Bryophyta$
C. $Pteridophyta$
D. $Algae$
3.
$Which reptile has a four-chambered heart?$
A. $Lizard$
B. $Snake$
C. $Crocodile$
D. $Turtle$
4.
$A bat is a mammal because it has:$
A. $Wings$
B. $Beak$
C. $Mammary glands$
D. $Feathers$
5.
$An organism is classified according to the hierarchy shown in the flowchart below. Based on the path leading to 'Kingdom X', which of the following organisms is a representative member of this group?$
A. $Trypanosoma$
B. $Agaricus$
C. $Ulothrix$
D. $Mycoplasma$
6.
$Which of the following is an example of a Pteridophyte?$
A. $Marsilea$
B. $Funaria$
C. $Spirogyra$
D. $Cycas$
7.
$Crocodiles are unique among reptiles because they possess a:$
A. $Three-chambered heart$
B. $Four-chambered heart$
C. $Two-chambered heart$
D. $Single-chambered heart$
8.
$The division of plants into Thallophyta, Bryophyta, and Pteridophyta is primarily based on what sequence of complexity?$
A. $Seed formation -> Vascular tissue -> Body differentiation$
B. $Body differentiation -> Vascular tissue -> Seed formation$
C. $Vascular tissue -> Seed formation -> Body differentiation$
D. $Seed formation -> Body differentiation -> Vascular tissue$
9.
$Which of the following groups is known to have a 'notochord' only in their larval tail and not in the adult stage?$
A. $Vertebrata$
B. $Cephalochordata$
C. $Urochordata$
D. $Hemichordata$
10.
$In the five-kingdom classification, 'Slime molds' are placed in Kingdom Protista. However, they resemble fungi in which of the following characteristics?$
A. $They have a cell wall made of cellulose$
B. $They are saprophytic in nature$
C. $They are always unicellular$
D. $They lack a true nucleus$

Download the worksheet for Diversity - Five Kingdom Classification to practice offline. It includes additional chapter-level practice questions.

A daptations as Outcomes of Structural Change

Subtopic

A daptations as Outcomes of Structural Change under Diversity for Grade 9 CBSE.

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Preview questions (no answers)

1.
$Which of these is a structural adaptation of a squirrel to maintain balance while jumping?$
A. $Small ears$
B. $Bushy tail$
C. $Sharp teeth$
D. $Thin skin$
2.
$What is the function of the long eyelashes in camels?$
A. $To look attractive$
B. $To protect eyes from blowing sand$
C. $To help them see better at night$
D. $To keep the eyes moist$
3.
$Gills in fish are richly supplied with blood vessels to efficiently:$
A. $Pump blood to the tail$
B. $O_2$
C. $Regulate body temperature$
D. $Digest food$
4.
$The black skin of a polar bear under its white fur is an adaptation to:$
A. $Scare away enemies$
B. $Absorb heat from the sun$
C. $Reflect light$
D. $Hide in the shadows$
5.
$The 'salt glands' in marine birds like Albatrosses are structural adaptations for:$
A. $Digesting salty fish$
B. $Excreting excess salt taken in with seawater$
C. $Producing salt for their young$
D. $Sensing the salinity of the water$
6.
$The 'Wings' of an insect and the 'Wings' of a bird are examples of adaptation for flight. Structurally, they are:$
A. $Homologous organs$
B. $Analogous organs$
C. $Vestigial organs$
D. $Rudimentary organs$
7.
$Which structural feature helps a 'Polar bear' walk on ice without slipping?$
A. $Long claws and small bumps (papillae) on the foot pads$
B. $Webbed toes$
C. $Very smooth skin on the bottom of the feet$
D. $Hooves with sharp edges$
8.
$Which structural modification allows 'Reptiles' to occupy much drier habitats than 'Amphibians'?$
A. $Development of a 2-chambered heart$
B. $Transition from gills to moist skin for breathing$
C. $Presence of dry, cornified skin with scales and internal fertilization$
D. $The change from urea to ammonia as the primary nitrogenous waste$
9.
$In the phylum Porifera, the 'Canal System' is a vital structural adaptation. What is its primary role?$
A. $To provide a rigid skeleton made of spongin fibers$
B. $To circulate water for food gathering, respiratory exchange, and removal of wastes$
C. $To coordinate the movement of the organism across the sea floor$
D. $To allow the sponge to change its shape to escape predators$
10.
$The structural adaptation of 'Marsupium' (pouch) in Metatherian mammals (Marsupials) is an outcome of:$
A. $The inability to produce milk$
B. $The birth of highly immature young due to a short-lived, inefficient placenta$
C. $The need to store food for the winter$
D. $The transition to a purely aquatic lifestyle$

Download the worksheet for Diversity - A daptations as Outcomes of Structural Change to practice offline. It includes additional chapter-level practice questions.

Scientific Naming - The Binomial System

Subtopic

Scientific Naming - The Binomial System under Diversity for Grade 9 CBSE.

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Preview questions (no answers)

1.
$Which part of the scientific name comes first?$
A. $Species$
B. $Genus$
C. $Family$
D. $Class$
2.
$The binomial name is essentially a _____ for the organism.$
A. $Nick name$
B. $Universal address$
C. $Common label$
D. $Two-part name$
3.
$Hibiscus \ rosa-sinensis$
A. $Hibiscus$
B. $rosa-sinensis$
C. $Hibiscus rosa$
D. $sinensis$
4.
$Which of the following is a correctly written scientific name for a rose?$
A. $Rosa indica$
B. $rosa Indica$
C. $Rosa Indica$
D. $rosa indica$
5.
$The 'Genus' name in binomial nomenclature can be likened to a person's:$
A. $First name$
B. $Surname (Family name)$
C. $Middle name$
D. $Nick name$
6.
$How many words make up the scientific name in the Binomial System?$
A. $One$
B. $Two$
C. $Three$
D. $Four$
7.
$Pisum$
A. $Genus$
B. $Order$
C. $Specific epithet$
D. $Family$
8.
$Vigna\ radiata\ (L.)\ R.\ Wilczek$
A. $It indicates that Linnaeus originally described the species but placed it in a different genus.$
B. $It signifies that Linnaeus's original description was found to be incomplete and was revised by Wilczek.$
C. $It shows that the species is a hybrid variety that resulted from Linnaeus's original plant stock.$
D. $Vigna\ radiata$
9.
$Which of the following categories is the most specific in the context of binomial nomenclature?$
A. $Family$
B. $Genus$
C. $Order$
D. $Species$
10.
$If two plants belong to the same species but have slightly different flower colors due to geographic isolation, they might be given a third name. This is known as:$
A. $Generic name$
B. $Specific epithet$
C. $Variety or Subspecies$
D. $Family name$

Download the worksheet for Diversity - Scientific Naming - The Binomial System to practice offline. It includes additional chapter-level practice questions.

Fossils as Evidence

Subtopic

Fossils as Evidence under Diversity for Grade 9 CBSE.

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1.
$Which of the following statements about fossils is TRUE?$
A. $Fossils are found in all types of rocks$
B. $Fossils give us a complete history of every organism that ever lived$
C. $Fossils show that life forms have changed over time$
D. $Fossils can only form in the presence of oxygen$
2.
$Carbon dating is effective for fossils because:$
A. $All living things contain carbon$
B. $Carbon is the hardest mineral$
C. $Carbon only exists in bones$
D. $Carbon turns into gold over time$
3.
$Which environment is BEST for fossilization?$
A. $A fast-flowing mountain river$
B. $A quiet lake with lots of sediment$
C. $The top of a windy hill$
D. $A dry, sandy desert with no burial$
4.
$Trilobites are extinct marine organisms that are often used as:$
A. $Food today$
B. $Index fossils$
C. $Building materials$
D. $Petroleum$
5.
$A geologist discovers a sequence of fossils in undisturbed sedimentary rock layers as shown in the diagram. What is the most scientifically valid conclusion regarding the history of this region based on the fossil diversity in these layers?$
A. $The organisms in Layer 1 are younger than the organisms in Layer 4 because they are simpler in structure.$
B. $The entire sequence of layers was deposited simultaneously during a single volcanic eruption.$
C. $The local environment transitioned over a long period from a marine habitat to a terrestrial habitat.$
D. $The region was always a desert, and the marine fossils were carried there by heavy winds.$
6.
$Which of the following is the most likely reason why a scientist might find a fossil of a tropical leaf in Antarctica?$
A. $Birds carried the leaf there recently$
B. $The leaf was frozen in a block of ice that floated from the equator$
C. $The continent of Antarctica was once located in a warmer climate zone$
D. $The plant evolved to grow in the snow$
7.
$What does 'Permineralization' mean in the context of fossil formation?$
A. $The organism is completely dissolved$
B. $Mineral-rich water fills the pores of organic tissues and deposits minerals$
C. $The organism is dried out in a desert$
D. $The organism is turned into charcoal$
8.
$What is the primary reason that fossilization is considered a rare event?$
A. $Most organisms are made of minerals that dissolve in water.$
B. $The specific combination of rapid burial and lack of oxygen is uncommon in nature.$
C. $Most organisms live in areas where rocks are never formed.$
D. $The Earth's crust is too hot for fossils to survive.$
9.
$Why is the fossil record of soft-bodied organisms like jellyfish much rarer than that of organisms like clams?$
A. $Jellyfish did not exist in the past.$
B. $Soft tissues decompose rapidly and are rarely preserved unless burial is instantaneous and anaerobic.$
C. $Clams are much more intelligent and chose better burial sites.$
D. $Seawater dissolves jellyfish tissues but hardens clam shells.$
10.
$The study of fossils helps us understand 'Phylogeny'. What does this term refer to?$
A. $The study of the chemical structure of rocks$
B. $The evolutionary history and relationships of a species or group$
C. $The process of naming new species$
D. $The study of ancient climates using ice cores$

Download the worksheet for Diversity - Fossils as Evidence to practice offline. It includes additional chapter-level practice questions.

Biodiversity Under Threat

Subtopic

Biodiversity Under Threat under Diversity for Grade 9 CBSE.

About Topic & Revision

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1.
$Which of these is a result of habitat fragmentation?$
A. $Animals having more space$
B. $Easier migration$
C. $Separation of animal populations$
D. $Increased forest cover$
2.
$The use of resources in a way that meets current needs without compromising future generations is:$
A. $Exploitation$
B. $Sustainable development$
C. $Overconsumption$
D. $Deforestation$
3.
$What happens to the level of oxygen in water when organic waste increases?$
A. $It increases$
B. $It decreases$
C. $It stays the same$
D. $It becomes solid$
4.
$Species which are at high risk of extinction in the near future are:$
A. $Safe$
B. $Endangered$
C. $Common$
D. $Stable$
5.
$The decline of pollinators such as bees and butterflies is a major threat to global biodiversity. Based on the ecological sequence shown in the diagram, what is the most direct consequence of this loss on an ecosystem?$
A. $It leads to an overproduction of nectar, which attracts harmful bacteria to the soil.$
B. $It disrupts the reproductive cycle of many plants, causing a shortage of food for other organisms.$
C. $It forces all herbivorous animal species to immediately become carnivores to survive.$
D. $It results in a sudden decrease in atmospheric oxygen as plants stop performing photosynthesis.$
6.
$What role do 'Decomposers' play in maintaining biodiversity and ecosystem health?$
A. $They produce food through photosynthesis$
B. $They act as the primary prey for predators$
C. $They recycle nutrients by breaking down dead organic matter$
D. $They compete with plants for sunlight$
7.
$In India, the Wildlife (Protection) Act was passed in which year to provide a legal framework for protecting biodiversity?$
A. $1947$
B. $1972$
C. $1991$
D. $2005$
8.
$Lichens are excellent bio-indicators for which type of environmental threat that affects biodiversity?$
A. $Water pollution by heavy metals$
B. $SO_2$
C. $Soil pollution by pesticides$
D. $Noise pollution in urban areas$
9.
$The 'World Summit on Sustainable Development' (2002) was held in which city, where 190 countries pledged to reduce the rate of biodiversity loss?$
A. $Rio de Janeiro$
B. $Johannesburg$
C. $Kyoto$
D. $Paris$
10.
$What is the primary difference between a 'National Park' and a 'Wildlife Sanctuary' in the Indian context?$
A. $National Parks protect only plants, while Sanctuaries protect only animals.$
B. $In a National Park, no human activity or private ownership is allowed, whereas in a Sanctuary, limited activities may be permitted.$
C. $Sanctuaries are larger than National Parks by law.$
D. $National Parks are managed by the UN, while Sanctuaries are managed by the State.$

Download the worksheet for Diversity - Biodiversity Under Threat to practice offline. It includes additional chapter-level practice questions.

Diversity

Classify organisms into five kingdoms using cellular organisation and mode of nutrition

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Apply binomial nomenclature and describe major divisions of plants and animals

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Explain ecological roles of diverse organisms including lichens and viruses

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India as a Biodiversity Hotspot

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How has the Biodiversity Evolved?

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How to Classify Organisms?

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The Need for Classification

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Biological Classification S ystems Over Time

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Five Kingdom Classification

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A daptations as Outcomes of Structural Change

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Scientific Naming - The Binomial System

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Fossils as Evidence

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Biodiversity Under Threat

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