Classification
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
The Five Kingdoms
SubtopicThe Five Kingdoms under Classification for Grade 6 IGCSE.
Preview questions (no answers)
- 1.
Which kingdom includes organisms such as molds and mildews?
A.Animalia
B.Plantae
C.Fungi
D.Prokaryotae
- 2.
Which of these is the most significant difference between the Kingdom Prokaryotae and the other four kingdoms?
A.Method of movement
B.Presence of a nucleus
C.Presence of a cell membrane
D.Method of reproduction
- 3.
Which kingdom would contain a single-celled organism found in a pond that can move using a tail-like flagellum and has a nucleus?
A.Animalia
B.Prokaryotae
C.Protoctista
D.Plantae
- 4.
What do we call the study of how living things are classified into kingdoms?
A.Taxonomy
B.Geology
C.Astronomy
D.Meteorology
- 5.
Which kingdom does the organism belong to, given that it is used to make yogurt and is a single-celled organism without a nucleus?
A.Protoctista
B.Fungi
C.Animalia
D.Prokaryotae
- 6.
If an organism is a multicellular consumer with no cell wall, which kingdom does it belong to?
A.Plantae
B.Fungi
C.Animalia
D.Protoctista
- 7.
What is the cell wall of a bacterium made of?
A.Cellulose
B.Chitin
C.Peptidoglycan (Murein)
D.Protein only
- 8.
Which of the following correctly orders the taxonomic ranks from the most general to the most specific?
A.Kingdom, Phylum, Class, Order, Family, Genus, Species
B.Kingdom, Class, Phylum, Family, Order, Species, Genus
C.Species, Genus, Family, Order, Class, Phylum, Kingdom
D.Phylum, Kingdom, Order, Class, Family, Genus, Species
- 9.
Which kingdom is unique because it contains organisms that can have both plant-like (chloroplasts) and animal-like (motility) features within the same unicellular body?
A.Protoctista
B.Monera
C.Fungi
D.Plantae
- 10.
What is the defining feature of 'saprotrophic' nutrition commonly found in Kingdom Fungi?
A.Feeding on dead organic matter by external digestion
B.Capturing live prey and digesting it internally
C.Living inside a host and causing it harm
D.Using sunlight to convert carbon dioxide into chemical energy
Download the worksheet for Classification - The Five Kingdoms to practice offline. It includes additional chapter-level practice questions.
Vertebrates and Invertebrates
SubtopicVertebrates and Invertebrates under Classification for Grade 6 IGCSE.
Preview questions (no answers)
- 1.
Which invertebrate lives in the ocean and often has a body covered in spines, like a sea urchin?
A.Echinoderms
B.Molluscs
C.Annelids
D.Arachnids
- 2.
Even though they can fly, bats are not birds. What are they?
A.Reptiles
B.Amphibians
C.Mammals
D.Insects
- 3.
What is true for all invertebrates?
A.They all have six legs
B.They all live in water
C.They all lack a spinal column
D.They all have shells
- 4.
Turtles have a hard shell, but they are vertebrates. To which specific group do they belong?
A.Amphibians
B.Fish
C.Reptiles
D.Mammals
- 5.
Tapeworms live inside the intestines of other animals and absorb nutrients. They belong to which phylum?
A.Cnidaria
B.Platyhelminthes
C.Echinodermata
D.Porifera
- 6.
Which statement correctly defines bilateral symmetry?
A.The body can be divided into many equal parts around a central point.
B.The body has no regular shape or symmetry.
C.The body can be divided into two identical halves along a single plane.
D.The body is divided into exactly three identical segments.
- 7.
How many antennae do arachnids (such as scorpions and spiders) have?
A.Zero
B.One pair
C.Two pairs
D.Four pairs
- 8.
In the classification of mammals, what is the main difference between a Placental mammal and a Marsupial?
A.Placentals lay eggs; Marsupials give birth
B.Placentals have a longer gestation period inside the uterus
C.Marsupials are endothermic; Placentals are ectothermic
D.Marsupials have fur; Placentals have scales
- 9.
Which of the following describes a key reproductive difference between Bony Fish and Reptiles?
A.Fish always use internal fertilization; reptiles use external
B.Fish eggs must stay in water; reptile eggs have a shell for land
C.Fish provide more parental care than reptiles
D.Reptiles have a larval stage; fish do not
- 10.
A scientist finds an animal with a segmented body and a closed circulatory system but no jointed legs. It is most likely an:
A.Arthropod
B.Annelid
C.Mollusk
D.Echinoderm
Download the worksheet for Classification - Vertebrates and Invertebrates to practice offline. It includes additional chapter-level practice questions.
Dichotomous Keys
SubtopicDichotomous Keys under Classification for Grade 6 IGCSE.
Preview questions (no answers)
- 1.
What is the most important rule when creating a dichotomous key?
A.Use as many colors as possible
B.Each step must offer two clear, opposite choices
C.The key must be at least 10 pages long
D.Only use Latin words
- 2.
If a key for insects asks 'Are wings present?' and the answer is 'No,' what is the next step?
A.Stop, it's not an insect
B.Follow the direction for 'No'
C.Assume it's a fly
D.Check if it has wings again
- 3.
Why do we use scientific keys instead of just guessing the name of an animal?
A.Guessing is more accurate
B.Keys provide a scientific and organized method
C.Keys are faster than thinking
D.Guessing is not allowed in schools
- 4.
If an organism is described as having 'jointed legs and an exoskeleton,' which tool would best help identify its specific species?
A.A thermometer
B.A dichotomous key
C.A weighing scale
D.A ruler
- 5.
Which field of science is most concerned with the creation and use of dichotomous keys?
A.Astronomy
B.Taxonomy
C.Chemistry
D.Physics
- 6.
When creating a dichotomous key for different types of transport, which choice is best for a couplet?
A.Has wheels / Does not have wheels
B.Is very fast / Is very slow
C.Is usually red / Is usually blue
D.Is expensive / Is cheap
- 7.
Which group of animals is distinguished by having 'moist skin and no scales' in a dichotomous key?
A.Reptiles
B.Amphibians
C.Mammals
D.Fish
- 8.
When building a dichotomous key for the five kingdoms, what characteristic would separate 'Kingdom Animalia' from 'Kingdom Fungi' and 'Kingdom Plantae'?
A.Absence of a cell wall
B.Presence of a nucleus
C.Ability to reproduce sexually
D.Being multicellular
- 9.
You find a plant leaf that has a single main vein and a blade that is not divided. However, the edge of the leaf has deep indents that do not reach the midrib. In a key, this leaf is described as:
A.Simple and lobed
B.Compound and pinnate
C.Simple and entire
D.Compound and palmate
- 10.
Which of these features would distinguish a 'Centipede' from a 'Millipede' in a dichotomous key?
A.Number of pairs of legs per body segment
B.Presence of an exoskeleton
C.Presence of jointed legs
D.The length of the antennae
Download the worksheet for Classification - Dichotomous Keys to practice offline. It includes additional chapter-level practice questions.
Classifying Plants
SubtopicClassifying Plants under Classification for Grade 6 IGCSE.
Preview questions (no answers)
- 1.
Which group of plants has seeds but does not produce flowers or fruit?
A.Mosses
B.Ferns
C.Conifers
D.Dicots
- 2.
What is the name for the transfer of pollen from the anther to the stigma?
A.Germination
B.Respiration
C.Pollination
D.Transpiration
- 3.
In which habitat would you most likely find a cactus?
A.Rainforest
B.Desert
C.Ocean
D.Pond
- 4.
Which of these plants is a flowering plant?
A.Moss
B.Fern
C.Apple tree
D.Pine tree
- 5.
A plant has leaves with a single main vein from which smaller veins branch off like a net. Which group does it belong to?
A.Monocotyledons
B.Dicotyledons
C.Algae
D.Ferns
- 6.
In the classification of plants, which group is known as the 'amphibians of the plant world' because they need water for reproduction?
A.Angiosperms
B.Gymnosperms
C.Bryophytes (Mosses)
D.Dicots
- 7.
Which of these traits would you NOT expect to find in a pine tree?
A.Vascular tissue
B.Pollen
C.Flower petals
D.Seeds
- 8.
Which of the following best explains why Angiosperms are more diverse and widespread than Gymnosperms?
A.They do not require water for any part of their life cycle
B.They produce flowers and fruits which aid in efficient pollination and seed dispersal
C.They are the only plants that can perform photosynthesis
D.They are the only plants with vascular tissue
- 9.
The 'fiddlehead' is a distinctive young curling leaf structure found in which group of plants?
A.Bryophytes
B.Pteridophytes
C.Gymnosperms
D.Angiosperms
- 10.
A plant is identified as having two cotyledons. Which of the following floral descriptions is consistent with this classification?
A.A flower with 3 petals and 3 sepals
B.A flower with 5 petals and 5 sepals
C.A flower with 6 petals and 3 sepals
D.A flower with 9 petals and 6 sepals
Download the worksheet for Classification - Classifying Plants to practice offline. It includes additional chapter-level practice questions.