Cambridge IGCSE · Marine Science (0697)

The animal kingdom: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on The animal kingdom.

10 questions24 marksFree, no account

Question 1

1 mark

What is the primary function of the lateral line system, a key external feature found on most bony fish?

Question 2

1 mark

Marine mammals (Cetaceans, Pinnipeds, Sirenians) are vertebrates. How do they typically differ from most marine bony fish in their reproductive method?

Question 3

1 mark

Which of the following combinations of features correctly describes the phylum Echinodermata, distinguishing them from Molluscs?

Question 4

1 mark

Which combination of characteristic features is used to place marine invertebrates into the group Crustaceans (e.g., crabs, shrimp)?

Question 5

1 mark

Which characteristic feature is specific to marine organisms classified as Annelids (e.g., lugworms) that differentiates them from Molluscs?

Question 6

2 marks

Name a distinguishing characteristic of crustaceans among marine invertebrates.

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Question 7

3 marks

State the characteristic body covering of marine birds and explain how their method of fertilization differs from that of most bony fish.

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Question 8

5 marks

Compare the body segmentation and symmetry of organisms in the phylum Annelida with those in the phylum Mollusca.

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Question 9

4 marks

Marine invertebrates are classified into various groups based on their physical features.
(a) Identify two characteristic features of the phylum Annelida.
(b) Identify two characteristic features of the phylum Mollusca that distinguish them from annelids.

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Question 10

5 marks

Bony fish have evolved various external features to survive in the marine environment.
(a) State the function of the lateral line and the operculum.
(b) A fish uses its fins for stability and movement. Identify which fins are primarily responsible for preventing rolling and which fin provides forward thrust.
(c) Explain how scales benefit a bony fish.

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