A:
All the vertebrates are essentially also a chordates.
R:
In an the chordate notochord appear first and further it is replaced with vertebral column.
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
1.
If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
2.
If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)
3.
If Assertion is true statement but Reason is false, then mark (3)
4.
If both Assertion and Reason are false statements, then mark (4)
Subtopic: Â Phylum Chordata |Â Study of Aves & Mammals |
From NCERT
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Given below are two statements:
| Assertion (A): | All the mammals are endotherm. |
| Reason (R): | Mammals possess four chambered heart and respire through lungs |
| 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. | Both (A) and (R) are false. |
Subtopic: Â Study of Aves & Mammals |
 75%
From NCERT
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Exclusively marine, radially symmetrical, and diploblastic organism is:
1. Pila
2. Nereis
3. Pleurobrachia
4. Asterias
1. Pila
2. Nereis
3. Pleurobrachia
4. Asterias
Subtopic: Â Phylum Ctenophora |
 83%
From NCERT
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Match List I with List II:
Choose the correct answer from the options given below:
1. A -II, B- IV, C-III, D-II
2. A -IV, B- II, C-III, D-I
3. A -III, B- IV, C-II, D-I
4. A -III, B- IV, C-I, D-II
| List I | List II |
| A. Bilaterally symmetrical, triploblastic acoelomate animal with flame cells | I. Limulus |
| B. Bilaterally symmetrical animal with calcareous shell and mantle cavity | II. Pleurobrachia |
| C. Radically symmetrical animal with ciliated comb plates and exclusively marine | III. Fasciola hepatica |
| D. Bilaterally symmetrical, triploblastic, coelomate animals with a chitinous exoskeleton | IV. Dentalium |
Choose the correct answer from the options given below:
1. A -II, B- IV, C-III, D-II
2. A -IV, B- II, C-III, D-I
3. A -III, B- IV, C-II, D-I
4. A -III, B- IV, C-I, D-II
Subtopic: Â Phylum Ctenophora |Â Phylum Arthropoda |Â Phylum Mollusca |
 89%
From NCERT
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NEET 2025 - Target Batch
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NEET 2025 - Target Batch
Strobilization is seen in
A. Jelly fish
B. Hydra
C. Tapeworm
D. Oligochaetes
E. Radiolarian
Choose the correct from the options given below
1. A and B only
2. A and C only
3. B and E only
4. C and E only
A. Jelly fish
B. Hydra
C. Tapeworm
D. Oligochaetes
E. Radiolarian
Choose the correct from the options given below
1. A and B only
2. A and C only
3. B and E only
4. C and E only
Subtopic: Â Phylum Coelenterata |Â Phylum Ctenophora |
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Asterias lacks specific locomotory, respiratory, and food-capturing organs but it can carry these functions through a unique system of:
1. Syconoid canal system
2. Water vascular system
3. Metamerism
4. Segmentation
1. Syconoid canal system
2. Water vascular system
3. Metamerism
4. Segmentation
Subtopic: Â Phylum Echinodermata |
 91%
From NCERT
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Select correct combination pertaining to fundamental characters possessed by chordates.
A. Bilaterally symmetrical coelomates
B. Notochord provides skeletal support
C. Defines proboscis
D. Tail contains skeletal elements
E. Dorsal hollow nerve cord
Choose the correct answer from the options given below:
1. B, C, D, E only
2. A, B, D, E only
3. A, B, C, D only
4. B & E only
A. Bilaterally symmetrical coelomates
B. Notochord provides skeletal support
C. Defines proboscis
D. Tail contains skeletal elements
E. Dorsal hollow nerve cord
Choose the correct answer from the options given below:
1. B, C, D, E only
2. A, B, D, E only
3. A, B, C, D only
4. B & E only
Subtopic: Â Phylum Chordata |
 75%
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Which of the following combination of animals lack body cavity?
A. Arthropod
B. Tania solium
C. Aschelmintes
D. Fasciola hepatica
E. Planaria
Choose the correct answer from the options given below:
1. A, B, C only
2. A, B, C, D only
3. C & E only
4. B, D, E only
A. Arthropod
B. Tania solium
C. Aschelmintes
D. Fasciola hepatica
E. Planaria
Choose the correct answer from the options given below:
1. A, B, C only
2. A, B, C, D only
3. C & E only
4. B, D, E only
Subtopic: Â Phylum Ctenophora |Â Phylum Aschelminthes |
 74%
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Which of the following are all dioecious animals?
1. Pheretima, Taenia and Ascaris
2. Hirudinaria, Ascaris and Neries
3. Taenia, Neries and Aurelia
4. Neries, Aurelia and Ascaris
1. Pheretima, Taenia and Ascaris
2. Hirudinaria, Ascaris and Neries
3. Taenia, Neries and Aurelia
4. Neries, Aurelia and Ascaris
Subtopic: Â Phylum Coelenterata |Â Phylum Aschelminthes |Â Phylum Annelida |
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Arrange the following parts of a sponge in the correct sequence for water to flow through
A. Apopyle
B. Incurrent canal
C. Prosopyle
D. Radial canal
E. Spongocoel
Choose the correct answer from the options given below
1. D, E, A, C, B
2. A, E, D, B, C
3. C, B, A, D, E
4. B, C, D, A, E
A. Apopyle
B. Incurrent canal
C. Prosopyle
D. Radial canal
E. Spongocoel
Choose the correct answer from the options given below
1. D, E, A, C, B
2. A, E, D, B, C
3. C, B, A, D, E
4. B, C, D, A, E
Subtopic: Â Phylum Porifera |
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