Arthropoda, Mollusca, Echinodermata, Hemichordata — NEET & JEE Questions

Question 1 · difficulty L1 · recall

Which animal phylum is characterised by jointed appendages and a chitinous exoskeleton?

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

Question 2 · 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 3 · difficulty L2 · understanding

A typical mollusc is characterised by a soft body commonly organised into

• A. head, muscular foot and visceral mass
• B. jointed appendages and segmented exoskeleton
• C. water vascular system and tube feet only
• D. proboscis, collar and trunk only

Question 4 · difficulty L2 · understanding

Adult echinoderms are commonly

• A. radially symmetrical and possess a water vascular system
• B. bilaterally symmetrical with jointed legs
• C. segmented worms with nephridia
• D. soft-bodied animals with a mantle cavity only

Question 5 · 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 6 · 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 7 · difficulty L3 · understanding

Exoskeleton of arthropods is composed of:

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

Question 8 · 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 9 · 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 10 · 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.