Characteristics and Classification of Living Organisms
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Characteristics of living organisms
SubtopicCharacteristics of living organisms under Characteristics and Classification of Living Organisms for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which process involves taking in materials for energy, growth, and development?
A.Respiration
B.Nutrition
C.Excretion
D.Reproduction
- 2.
A student touches a hot plate and immediately pulls their hand away. Which characteristic of living organisms does this action represent?
A.Movement
B.Growth
C.Respiration
D.Sensitivity
- 3.
The removal of toxic materials and substances in excess of requirements from an organism is known as:
A.Excretion
B.Egestion
C.Nutrition
D.Defecation
Download the worksheet for Characteristics and Classification of Living Organisms - Characteristics of living organisms to practice offline. It includes additional chapter-level practice questions.
Concept and use of a classification system
SubtopicConcept and use of a classification system under Characteristics and Classification of Living Organisms for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
What is the primary aim of a classification system in biology?
A.To name every individual organism on Earth
B.To organize organisms into groups based on shared features
C.To prove that all organisms belong to the same kingdom
D.To eliminate the use of common names in different languages
- 2.
How is a biological 'species' traditionally defined?
A.A group of organisms that live in the same geographic area
B.A group of organisms that share identical physical characteristics
C.A group of organisms that can interbreed to produce fertile offspring
D.A group of organisms that share the same niche in an ecosystem
- 3.
In the biological classification hierarchy, which group contains the largest number of different types of organisms?
A.Kingdom
B.Genus
C.Class
D.Order
Download the worksheet for Characteristics and Classification of Living Organisms - Concept and use of a classification system to practice offline. It includes additional chapter-level practice questions.
Features of organisms
SubtopicFeatures of organisms under Characteristics and Classification of Living Organisms for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which of the following is a characteristic feature of all mammals?
A.Laying eggs with hard shells
B.Having a heart with three chambers
C.The presence of mammary glands
D.Being cold-blooded (ectothermic)
- 2.
Which of these features is characteristic of all arthropods?
A.A backbone
B.Three pairs of legs
C.An exoskeleton and jointed legs
D.Wings for flight
- 3.
According to the binomial system of nomenclature, which of the following is the correct way to write the scientific name for a human?
A.homo sapiens
B.Homo Sapiens
C.homo Sapiens
D.Homo sapiens
Download the worksheet for Characteristics and Classification of Living Organisms - Features of organisms to practice offline. It includes additional chapter-level practice questions.
Dichotomous keys
SubtopicDichotomous keys under Characteristics and Classification of Living Organisms for Grade 12 IGCSE.
Preview questions (no answers)
- 1.
Which of the following characteristics would be the least effective to use when constructing a dichotomous key for animals?
A.The presence or absence of a backbone
B.The number of segments on an antenna
C.The arrangement of scales on the skin
D.The specific food the animal is currently eating
- 2.
In the context of biological classification and keys, what is the specific term used for the pair of contrasting statements at each step?
A.Binomials
B.Taxons
C.Couplets
D.Genera
- 3.
At each stage of a dichotomous key, how many alternative choices are typically provided to the user?
A.One
B.Two
C.Three
D.Four
Download the worksheet for Characteristics and Classification of Living Organisms - Dichotomous keys to practice offline. It includes additional chapter-level practice questions.