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Q. No.Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below:
| Assertion (A): | In hemichordates, the body cavity is lined by mesoderm. |
| Reason (R): | In aschelminthes, the body cavity is not lined by mesoderm |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Â Basis of Classification |
 65%
Level 2: 60%+
NEET - 2024
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Match List-I with List-II
Choose the correct answer from the options given below:
| 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:
| Options: | (A) | (B) | (C) | (D) |
| 1. | (IV) | (II) | (I) | (III) |
| 2. | (I) | (III) | (II) | (IV) |
| 3. | (III) | (II) | (I) | (IV) |
| 4. | (II) | (I) | (III) | (IV) |
Subtopic: Â Phylum Porifera |Â Phylum Ctenophora |Â Phylum Echinodermata |
 86%
Level 1: 80%+
NEET - 2023
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Select the correct statements:
Choose the correct answer from the options given below:
| A: | Platyhelminthes are triploblastic, pseudocoelomate and bilaterally symmetrical organisms. |
| B: | Ctenophores reproduce only sexually and fertilization is external. |
| C: | In tapeworm, fertilization is internal but sexes are not separate. |
| D: | Ctenophores are exclusively marine, diploblastic and bioluminescent organisms. |
| E: | In sponges, fertilization is external and development is direct. |
Choose the correct answer from the options given below:
| 1. | (A), (C) and (D) only | 2. | (B), (C) and (D) only |
| 3. | (A) and (E) only | 4. | (B) and (D) only |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |Â Phylum Ctenophora |Â Phylum Platyhelminthes |
 67%
Level 2: 60%+
NEET - 2023
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Match List-I with List-II
| List-I | List-II | ||
| (a) | Metamerism | (i) | Coelenterata |
| (b) | Canal system | (ii) | Ctenophora |
| (c) | Comb Plates | (iii) | Annelida |
| (d) | Cnidoblasts | (iv) | Porifera |
Choose the correct answer from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | iii | iv | ii | i |
| 2. | iv | i | ii | iii |
| 3. | iv | iii | i | ii |
| 4. | iii | iv | i | ii |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |Â Phylum Ctenophora |Â Phylum Annelida |
 84%
Level 1: 80%+
NEET - 2021
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In the case of Poriferans, the spongocoel is lined with flagellated cells called:
1. Oscula
2. Choanocytes
3. Mesenchymal cells
4. Ostia
Subtopic: Â Phylum Porifera |
 88%
Level 1: 80%+
NEET - 2017
Hints
Match List-I with List-II.
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A. | Taenia | I. | Nephridia |
| B. | Paramoecium | II. | Contractile vacuole |
| C. | Periplaneta | III. | Flame cells |
| D. | Pheretima | IV. | Urecose gland |
| Options: | A | B | C | D |
| 1. | II | I | IV | III |
| 2. | I | II | III | IV |
| 3. | I | II | IV | III |
| 4. | III | II | IV | I |
Subtopic: Â Phylum Coelenterata |Â Phylum Ctenophora |Â Phylum Annelida |Â Phylum Arthropoda |
 83%
Level 1: 80%+
NEET - 2023
Hints
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:
| Options: | (a) | (b) | (c) | (d) |
| 1. | ii | iii | iv | i |
| 2. | i | iv | iii | ii |
| 3. | ii | iii | i | iv |
| 4. | iv | i | iii | ii |
Subtopic: Â Phylum Coelenterata |Â Phylum Aschelminthes |Â Phylum Arthropoda |Â Phylum Mollusca |
 88%
Level 1: 80%+
NEET - 2021
Hints
Read the following statements.
| (a) | Metagenesis is observed in Helminths. |
| (b) | Echinoderms are triploblastic and coelomate animals. |
| (c) | Round worms have organ-system level of body organization. |
| (d) | Comb plates present in ctenophores help in digestion. |
| (e) | Water vascular system is characteristic of Echinoderms. |
Choose the correct answer from the options given below:
1. (a), (d) and (e) are correct
2. (b), (c) and (e) are correct
3. (c), (d) and (e) are correct
4. (a), (b) and (c) are correct
Subtopic: Â Phylum Coelenterata |Â Phylum Ctenophora |Â Phylum Aschelminthes |Â Phylum Echinodermata |
 80%
Level 1: 80%+
NEET - 2021
Hints
Match the following genera with their respective phylum:
| Column-I | Column-II | ||
| (a) | Ophiura | (i) | Mollusca |
| (b) | Physalia | (ii) | Platyhelminthes |
| (c) | Pinctada | (iii) | Echinodermata |
| (d) | Planaria | (iv) | Coelenterata |
Select the correct option:
| Options: | (a) | (b) | (c) | (d) |
| 1. | iv | i | iii | ii |
| 2. | iii | iv | i | ii |
| 3. | i | iii | iv | ii |
| 4. | iii | iv | ii | i |
Subtopic: Â Phylum Coelenterata |Â Phylum Ctenophora |Â Phylum Mollusca |Â Phylum Echinodermata |
 85%
Level 1: 80%+
NEET - 2019
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Metagenesis refers to?
| 1. | The presence of different morphic forms |
| 2. | Alternation of generation between asexual and sexual phases of an organism |
| 3. | Occurrence of a drastic change in the form during post-embryonic development |
| 4. | Presence of a segmented body and parthenogenic mode of reproduction |
Subtopic: Â Phylum Coelenterata |
 87%
Level 1: 80%+
NEET - 2015
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