Characteristics and classification of living organisms — IGCSE Biology (0610) questions by topic

Characteristics and classification questions infer life processes from an organism's behaviour, such as swimming away from light and laying eggs, name the genus of a chimpanzee species, identify which group myriapods belong to, and pick out classifying features from a magnified aphid diagram.

Identify, state, describe, explain and complete lead 84 real questions worth 1 to 17 marks from 2023 to 2025 papers, the largest count for this topic. Because classification depends on matching an observed feature to its defining group precisely, submitting an answer for instant marking flags exactly which feature, such as segmented legs, has been misapplied to the wrong classification.

May–June 2025, Paper 11

Question 1 · 1 mark

The diagram shows how a seed changes after it is planted in soil and watered. (The diagram shows a four-stage sequence: a bean seed in the soil; the seed beginning to develop a…

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Question 2 · 1 mark

Which row describes each part of the binomial system name for humans? Homo sapiens --- --- --- A genus kingdom B genus species C species genus D species kingdom

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Question 3 · 1 mark

What are the characteristics of fish? maintain a constant body temperature eggs covered in jelly external ears present scales present --- --- --- --- --- A yes no yes no B yes yes…

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May–June 2025, Paper 12

Question 1 · 1 mark

When a herbivore sees a carnivore, which characteristic of living things is involved? A excretion B growth C reproduction D sensitivity

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Question 2 · 1 mark

Which organism has been named using the binomial system? A Brown seaweed B Polar bear C Red fox D Vulpes vulpes

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Question 3 · 1 mark

Which list contains only arthropods? A amphibians, insects, myriapods B arachnids, crustaceans, myriapods C crustaceans, insects, fish D insects, myriapods, reptiles

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May–June 2025, Paper 13

Question 1 · 1 mark

The Venus flytrap is a plant that feeds on insects. When an insect lands on a specially adapted leaf, the leaf folds very quickly and traps the insect. The leaves produce enzymes…

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Question 2 · 1 mark

A rat has the scientific name Rattus rattus. What do the two parts of this name refer to? A genus and species B kingdom and genus C kingdom and species D species and group

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Question 3 · 1 mark

Which of the animals shown is a crustacean? The diagram shows four animals labelled A to D: A is a winged insect (e.g. a bee/fly with wings and three pairs of legs); B is an…

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May–June 2025, Paper 21

Question 1 · 1 mark

Which characteristic of living things requires carbon dioxide to diffuse into a leaf? A excretion B movement C nutrition D respiration

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Question 2 · 1 mark

Which set of features is characteristic only of birds? A hair and wings B hard-shelled eggs and feathers C scales and soft-shelled eggs D wings and soft-shelled eggs

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May–June 2025, Paper 22

Question 1 · 1 mark

The photograph shows an animal called a margay (a spotted wild cat). Four processes that occur in the margay are listed. - excretion - growth - digestion - respiration How many of…

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Question 2 · 1 mark

Part of the base sequence of DNA from four species was determined. species 1 T C A G G A T T species 2 T G A G C A A T species 3 T G A G C A A G species 4 T G A G G A T T Which…

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Question 3 · 1 mark

A single-celled organism has chloroplasts, a cell wall and a nucleus. Which kingdom is this organism placed in? A fungus B plant C prokaryote D protoctist

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May–June 2025, Paper 23

Question 1 · 1 mark

The diagram shows an aquatic plant in light. [Diagram: a test tube of water containing an aquatic plant at the bottom; light is directed at the plant from the left (arrow labelled…

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Question 2 · 1 mark

The diagrams show four organisms. Which organism is a prokaryote? [Diagrams (not to scale): A is a rod-shaped cell with a cell wall and coiled circular DNA but no nucleus; B is an…

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May–June 2025, Paper 31

Question 8 · 9 marks

Reproduction is one characteristic of living organisms. State two other characteristics.

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May–June 2025, Paper 32

Question 7 · 14 marks

Fig. 7.1 is a photograph of an Asian elephant, Elephas maximus. State the genus name for the Asian elephant.

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May–June 2025, Paper 33

Question 1 · 14 marks

Gonorrhoea is a sexually transmitted infection caused by a bacterium. Fig. 1.1 is a diagram of the bacterium that causes gonorrhoea. The diagram shows the bacterial cell with…

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May–June 2024, Paper 41

Question 1 · 17 marks

Fig. 1.1 is a photograph of a fish. Fig. 1.2 is a photograph of an amphibian. State two visible features that distinguish the fish in Fig. 1.1 from the amphibian in Fig. 1.2.

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May–June 2024, Paper 42

Question 5 · 14 marks

Fig. 5.1 is a photograph of a koala. Koalas are marsupial mammals that give birth to offspring that are incompletely developed; the offspring develops further for several months…

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May–June 2024, Paper 43

Question 2 · 13 marks

Fig. 2.1 is a photograph of a spider plant, Chlorophytum comosum. Spider plants can reproduce by producing an identical plantlet, which grows away from the single parent plant.…

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Question 6 · 15 marks

Fig. 6.1 shows a boreal toad, Anaxyrus boreas. This toad is listed as an endangered species. State the genus of the boreal toad.

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October–November 2024, Paper 11

Question 1 · 1 mark

The diagram shows a leaf on a plant. The diagram shows simple sugars made in the leaf, water taken up from the soil, carbon dioxide from the air, and sunlight reaching the leaf.…

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Question 2 · 1 mark

Which description of a species is correct? A a group of organisms that can reproduce to produce fertile offspring B a group of animals that can produce genetically different…

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Question 3 · 1 mark

The diagram shows a dolphin. Dolphins are mammals that live in the sea. Which row correctly identifies some of the features of dolphins (organ of gas exchange; produces milk)? A…

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October–November 2024, Paper 12

Question 2 · 1 mark

A student exposed a fly larva to light and temperature gradients. They lit the area from one side and made one side of the area warmer than the other. They traced the path of the…

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Question 3 · 1 mark

The table shows the scientific names and the common names of four plants: Althaea officinalis (marsh mallow); Hottonia palustris (water violet); Viola palustris (marsh violet);…

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Question 4 · 1 mark

The diagram shows an arthropod. Which group does this arthropod belong to? A arachnid B crustacean C insect D myriapod

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October–November 2024, Paper 13

Question 1 · 1 mark

Students find a small organism in a pond. They catch it and put it into a large jar of water. They see that the organism swims away from light. It lays some eggs before it is put…

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Question 2 · 1 mark

Which description of a species is correct? A a group of organisms living at the same time B a group of organisms living in the same area C a group of organisms that can reproduce…

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Question 3 · 1 mark

The table shows the number of animals collected in a sample from a woodland and the groups to which they belong: arachnids 10; crustaceans 8; insects 80; myriapods 7. How many of…

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Question 4 · 1 mark

Some vertebrates have body hair. Which group do these vertebrates belong to? A amphibian B bird C mammal D reptile

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October–November 2024, Paper 21

Question 1 · 1 mark

A living organism, X, can make its own food, get rid of toxic materials and detect and respond to stimuli. What other four processes must organism X carry out to stay alive? A…

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Question 2 · 1 mark

The diagram shows an animal. Using the key, which genus does the animal belong to? Key: has jointed legs - three pairs of legs (- has tail = A Hexagenia; no tail = B Dytiscus) or…

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Question 3 · 1 mark

Which statement is true for all species of organisms? A A species is a group of organisms that are genetically identical. B A species is a group of organisms that produce fertile…

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Question 4 · 1 mark

Which group of living organisms includes the myriapods? A arthropods B prokaryotes C protoctists D vertebrates

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October–November 2024, Paper 22

Question 1 · 1 mark

Which organisms carry out respiration, growth, movement and excretion? A all animals and all plants B animals only C arthropods and flowering plants only D plants only

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Question 2 · 1 mark

The chimpanzee belongs to the species Pan troglodytes. What is the genus of this species? A chimpanzee B Pan C Pan troglodytes D troglodytes

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Question 3 · 1 mark

The diagram shows a tree leaf. Use the key to identify the tree species to which the leaf belongs. Key: leaf shape - leaf is simple, with no leaflets (- leaf edge smooth = A Fagus…

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October–November 2024, Paper 23

Question 1 · 1 mark

What is a description of excretion? A a chemical reaction that releases energy B a permanent increase in size and dry mass C removal of waste products of metabolism D taking in…

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Question 2 · 1 mark

The scientific name for a domestic horse is Equus caballus. Which row shows the two parts of the name using the binomial system? (columns: Equus; caballus) A kingdom; species B…

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October–November 2024, Paper 32

Question 4 · 10 marks

A population of a species of fish was accidentally introduced into a lake. State two features that can be used to classify this introduced species as a fish.

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October–November 2024, Paper 41

Question 3 · 17 marks

Fig. 3.1 shows the structure of the pathogen that causes cholera, with structures labelled A, B, C, D, E, F, G and H. State the name of the kingdom that includes the pathogen…

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October–November 2024, Paper 42

Question 1 · 17 marks

Organisms from the genus Chlorella are protoctists. State the additional information required to name Chlorella according to the binomial system.

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Question 4 · 11 marks

Fig. 4.1 shows a diagram of two flowers from different plants of the same species. Describe what is meant by the term species.

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October–November 2024, Paper 43

Question 2 · 12 marks

Aphids are arthropods. Aphids insert their mouthpieces into the phloem in the stem of a plant to feed. An aphid is shown in Fig. 2.1 (magnification ×22). Identify two features…

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May–June 2023, Paper 11

Question 1 · 1 mark

What are characteristics of all organisms? A egestion and excretion B egestion and nutrition C excretion and nutrition D excretion and photosynthesis

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Question 2 · 1 mark

The scientific name for the golden eagle is Aquila chrysaetos. What is the genus of the golden eagle? A Aquila B chrysaetos C eagle D golden

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Question 3 · 1 mark

The diagram shows four arthropods (Pediculus ×20, Anopheles ×10, Dermacentor ×7, Carcinus ×0.5). How many of these arthropods are insects? A 1 B 2 C 3 D 4

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May–June 2023, Paper 12

Question 1 · 1 mark

Living animals release carbon dioxide. This is an example of which life process? A excretion B movement C nutrition D sensitivity

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Question 2 · 1 mark

Some statements about species are given. 1 Members of a species all look identical. 2 Members of a species belong to the same genus. 3 Members of a species can produce fertile…

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Question 3 · 1 mark

The table shows some features of different animals (columns: wings, hair, scales) with ticks for each row A–D. Which animal is a reptile? A B C D

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May–June 2023, Paper 13

Question 1 · 1 mark

What are excretion, sensitivity and reproduction characteristics of? A all animals and all plants B animals only C plants only D some animals and some plants

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Question 2 · 1 mark

The photograph shows an organism (a bird). Which visible feature can be used to classify this organism as a bird? A feathers B lays eggs C two legs D wings

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Question 3 · 1 mark

The diagram shows an arthropod. Which features are characteristic of all arthropods? A jointed legs and segmented body B jointed legs and thorax C segmented body and wings D…

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May–June 2023, Paper 21

Question 1 · 1 mark

What are characteristics of all organisms? A egestion and excretion B egestion and nutrition C excretion and nutrition D excretion and photosynthesis

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Question 2 · 1 mark

The scientific name for the golden eagle is Aquila chrysaetos. What is the genus of the golden eagle? A Aquila B chrysaetos C eagle D golden

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May–June 2023, Paper 22

Question 1 · 1 mark

Which process occurs both in plants and in animals? A excretion B phagocytosis C photosynthesis D transpiration

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Question 2 · 1 mark

Some statements about species are given. 1 Members of a species all look identical. 2 Members of a species belong to the same genus. 3 Members of a species can produce fertile…

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May–June 2023, Paper 23

Question 1 · 1 mark

What are two characteristics of all living organisms? A breathing and reproduction B photosynthesis and excretion C reproduction and respiration D respiration and photosynthesis

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Question 2 · 1 mark

The photograph shows an organism (a bird). Which visible feature can be used to classify this organism as a bird? A feathers B lays eggs C two legs D wings

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May–June 2023, Paper 31

Question 1 · 11 marks

Describe the meaning of the term species.

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May–June 2023, Paper 32

Question 1 · 7 marks

Fig. 1.1 shows a photograph of a pseudoscorpion, with one part labelled A. State two features, visible in Fig. 1.1, that can be used to classify this organism as an arachnid.

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May–June 2023, Paper 33

Question 1 · 10 marks

Fig. 1.1 is a photograph of an insect. Insects are arthropods. Arthropods belong to the animal kingdom. State the name of one other kingdom.

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October–November 2023, Paper 11

Question 1 · 1 mark

Some processes carried out by living organisms are listed. 1 egestion 2 excretion 3 reproduction 4 respiration Which processes are carried out by all living organisms? A 1, 2, 3…

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Question 2 · 1 mark

The scientific name for humans is Homo sapiens. What does Homo refer to? A mammal B genus C kingdom D species

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Question 3 · 1 mark

Which row is correct for arthropod classification? Columns: arthropod group; antennae present; number of body parts; number of legs. A arachnids; no; 2; 6 B crustaceans; yes; 3; 8…

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October–November 2023, Paper 12

Question 1 · 1 mark

Which processes are characteristics of all living organisms? 1 digestion 2 respiration 3 excretion A 1, 2 and 3 B 1 only C 2 and 3 only D 2 only

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Question 2 · 1 mark

Using the binomial system, the Arctic fox is called Vulpes lagopus. Which row is correct? Columns: Vulpes; lagopus. A genus; kingdom B genus; species C species; genus D species;…

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Question 3 · 1 mark

The diagrams show four different types of arthropod (A–D), each labelled with an arthropod group (crustacean, insect, myriapod, arachnid). Which organism is labelled with its…

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October–November 2023, Paper 13

Question 1 · 1 mark

What are characteristics of all living organisms? A breathing, growth and movement B egestion, nutrition and reproduction C digestion, excretion and respiration D reproduction,…

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Question 2 · 1 mark

Using the binomial system, the name of a lion is Panthera leo. Which statement is correct? A The lion belongs to the kingdom Panthera. B The lion belongs to the genus Panthera. C…

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Question 3 · 1 mark

Which feature would place organisms into the crustacean group of arthropods? A eight legs B six legs C two pairs of antennae D usually have two pairs of wings

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October–November 2023, Paper 21

Question 1 · 1 mark

Some processes carried out by living organisms are listed. 1 egestion 2 excretion 3 reproduction 4 respiration Which processes are carried out by all living organisms? A 1, 2, 3…

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Question 2 · 1 mark

The scientific name for humans is Homo sapiens. What does Homo refer to? A mammal B genus C kingdom D species

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October–November 2023, Paper 22

Question 1 · 1 mark

Which processes are characteristics of all living organisms? 1 digestion 2 respiration 3 excretion A 1, 2 and 3 B 1 only C 2 and 3 only D 2 only

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Question 2 · 1 mark

Using the binomial system, the Arctic fox is called Vulpes lagopus. Which row is correct? Columns: Vulpes; lagopus. A genus; kingdom B genus; species C species; genus D species;…

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Question 3 · 1 mark

Which feature is found in viruses? A cell wall B mitochondria C nucleus D protein coat

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October–November 2023, Paper 23

Question 1 · 1 mark

What are characteristics of all living organisms? A breathing, growth and movement B egestion, nutrition and reproduction C digestion, excretion and respiration D reproduction,…

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Question 2 · 1 mark

Using the binomial system, the name of a lion is Panthera leo. Which statement is correct? A The lion belongs to the kingdom Panthera. B The lion belongs to the genus Panthera. C…

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October–November 2023, Paper 32

Question 8 · 10 marks

All living organisms can be classified into groups by the features they share. Complete the sentences about classifying organisms. A species is a group of organisms that reproduce…

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October–November 2023, Paper 33

Question 7 · 10 marks

Fig. 7.1 is a photograph of a lionfish (Pterois volitans). State the genus of the lionfish.

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October–November 2023, Paper 41

Question 3 · 17 marks

Frogs are classified as amphibians. State two features of amphibians that distinguish them from all other vertebrates.

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