Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.
Reason (R): The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults.
In the light of the above statements, choose the correct answer from the options given below :
1. (A) is True but (R) is False.
2. (A) is False but (R) is True.
3. Both (A) and (R) are True and (R) is the correct explanation of (A).
4. Both (A) and (R) are True but (R) is not the correct explanation of (A)
Subtopic:  Phylum Chordata |
 73%
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All living members of the class Cyclostomata are:
1. Symbiotic
2. Ectoparasite
3. Free living
4. Endoparasite
Subtopic:  Class Cyclostomata |
 78%
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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:
1. B and C only 2. B, D and E only
3. A and B only 4. A and C only
Subtopic:  Phylum Echinodermata |
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NEET - 2025
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While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?
1. Schizocoelomate
2. Spongocoelomate
3. Acoelomate
4. Pseudocoelomate
Subtopic:  Basis of Classification |
 60%
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Match List I with List II:
List I List II
A. Pleurobrachia I. Mollusca
B.  Radula  II. Ctenophora
C.  Stomochord III. Osteichthyes
D. Air bladder IV. Hemichordata

Choose the correct answer from the options given below: 
1. A-II, B-I, C-IV, D-III
2. A-II, B-IV, C-I, D-III
3. A-IV, B-III, C-II, D-I
4. A-IV, B-II, C-III, D-I
Subtopic:  Phylum Ctenophora | Phylum Mollusca | Phylum Hemichordata | Phylum Chordata |
 85%
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NEET - 2024
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Match List I with List II:
List I List II
A.   Pterophyllum   I.  Hag fish
B.  Myxine  II.  Saw fish
C.  Pristis  III.  Angel fish
D.  Exocoetus IV.  Flying fish

Choose the correct answer from the options given below:
1. A-III, B-I, C-II, D-IV 
2. A-IV, B-I, C-II, D-III 
3. A-III, B-II, C-I, D-IV 
4. A-II, B-I, C-III, D-IV
Subtopic:  Phylum Chordata |
 71%
From NCERT
NEET - 2024
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Consider the following statements:
A. Annelids are true coelomates
B. Poriferans are pseudocoelomates
C. Aschelminthes are acoelomates
D. Platyhelminthes are pseudocoelomates
Choose the correct answer from the options given below:
1. A only
2. C only
3. D only
4. B only
Subtopic:  Phylum Annelida |
 82%
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The following are the statements about non-chordates: 
A. Pharynx is perforated by gill slits.
B. Notochord is absent. 
C. Central nervous system is dorsal. 
D. Heart is dorsal if present. 
F. Post anal tail is absent. 

Choose the most appropriate answer from the options given below: 
1. A, B & D only
2. B, D & E only
3. B, C & D only
4. A & C only
Subtopic:  Phylum Chordata |
 66%
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NEET - 2024
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Which of the following group of animals have three chambered heart? 
1. Bufo, Alligator, Struthio
2. Chameleon, Hyla, Calotes
3. Crocodilus, pavo, Clarias
4. Exocoetus, Hemidactylus, Rana 
Subtopic:  Study of Amphibians | Study of Reptilia |
 69%
From NCERT
NEET - 2024

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Match List-I with List-II:
List-I
(Biological Name)
List-II
(Common name)
A. Asterias I. Sea urchin
B.  Antedon II. Brittle star 
C. Echinus III.  Sea lily
D. Ophiura  IV. Star fish 

Choose the correct answer from the options given below: 
 
1. A-III, B-IV, C-II, D-I
2. A-IV, B-III, C-I, D-II
3. A-II, B-III, C-I, D-IV
4. A-I, B-II, C-IV, D-III
Subtopic:  Phylum Echinodermata |
 89%
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NEET - 2024
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