Arthropoda, Mollusca, Echinodermata, Hemichordata — practice questions

Question 1 · difficulty L2 · understanding

Role of the water vascular system in Echinoderms is : A. Respiration and Locomotion B. Excretion and Locomotion C. Capture and transport of food D. Digestion and Respiration E. Digestion and Excretion Choose the correct answer from the options given below :

• A. B and C Only
• B. B, D and E Only
• C. A and B Only
• D. A and C Only

Question 2 · difficulty L3 · application

An animal has a chitinous exoskeleton, jointed appendages and an open circulatory system. Which phylum does it belong to?

• A. Mollusca
• B. Arthropoda
• C. Echinodermata
• D. Hemichordata

Question 3 · difficulty L3 · understanding

Match List-I with List-II. List - I List - II (A) Contractile vacuole (I) Asterias (B) Water vascular system (II) Amoeba (C) Canal system (III) Spongilla (D) Flame cells (IV) Taenia Choose the correct answer from the options given below :

• A. (A)-(IV), (B)-(II), (C)-(I), (D)-(III)
• B. (A)-(I), (B)-(III), (C)-(II), (D)-(IV)
• C. (A)-(III), (B)-(II), (C)-(I), (D)-(IV)
• D. (A)-(II), (B)-(I), (C)-(III), (D)-(IV)

Question 4 · difficulty L3 · understanding

Exoskeleton of arthropods is composed of:

• A. Cutin
• B. Cellulose
• C. Chitin
• D. Glucosamine

Question 5 · difficulty L3 · understanding

Match the following : List-I List-II (a) Physalia (i) Pearl oyster (b) Limulus (ii) Portuguese Man of War (c) Ancylostoma (iii) Living fossil (d) Pinctada (iv) Hookworm Choose the correct answer from the options given below.

• A. (a) (b) (c) (d) (i) (iv) (iii) (ii)
• B. (a) (b) (c) (d) (ii) (iii) (i) (iv)
• C. (a) (b) (c) (d) (iv) (i) (iii) (ii)
• D. (a) (b) (c) (d) (ii) (iii) (iv) (i)

Question 6 · difficulty L3 · understanding

Read the following statements (1) Metagenesis is observed in Helminths. (2) Echinoderms are triploblastic and coelomate animals. (3) Round worms have organ-system level of body organization. (4) Comb plates present in ctenophores help in digestion. (5) Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.

• A. (2), (3) and (5) are correct
• B. (3), (4) and (5) are correct
• C. Round (1), (2) and (3) are correct
• D. (1), (4) and (5) are correct

Question 7 · difficulty L3 · understanding

If the head of cockroach is removed, it may live for few days because

• A. the cockroach does not have nervous system.
• B. the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.
• C. the head holds a 1/3 rd of a nervous system while the rest is situated along the dorsal part of its body.
• D. the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.

Question 8 · difficulty L3 · understanding

Match the following columns and select the correct option : Column-I Column-II (a) Gregarious, polyphagous pest (i) Asterias (b) Adult with radial symmetry and larva with bilateral symmetry (ii) Scorpion (c) Book lungs (iii) Ctenoplana (d) Bioluminescence (iv) Locusta

• A. (A) (B) (C) (D) (iv) (i) (ii) (iii)
• B. (A) (B) (C) (D) (iii) (ii) (i) (iv)
• C. (A) (B) (C) (D) (ii) (i) (iii) (iv)
• D. (A) (B) (C) (D) (i) (iii) (ii) (iv)

Question 9 · difficulty L5 · analysis

Three marine animals are compared. P has a mantle and muscular foot, Q has a water vascular system and pentaradial adult symmetry, and R has a tripartite body divided into proboscis, collar and trunk. Which sequence correctly identifies P, Q and R?

• A. Mollusca, Echinodermata, Hemichordata
• B. Arthropoda, Mollusca, Echinodermata
• C. Mollusca, Hemichordata, Echinodermata
• D. Echinodermata, Mollusca, Hemichordata