Q. No.The phylum with exclusively marine animals is:
| 1. | Porifera | 2. | Cnidaria |
| 3. | Ctenophora | 4. | Platyhelminthes |
Subtopic: Phylum Ctenophora & Platyhelminthes |
68%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
How many of the given statements are correct regarding Ctenophores?
1. 1
2. 2
3. 3
4. 4
| I: | commonly known as sea walnuts or comb jellies |
| II: | exclusively marine |
| III: | body bears eight external rows of ciliated comb plates |
| IV: | bioluminescence (the property of a living organism to emit light) is well-marked |
2. 2
3. 3
4. 4
Subtopic: Phylum Ctenophora & Platyhelminthes |
94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which animals are diploblastic and show radial symmetry but lack cnidoblasts?
1. Cnidarians
2. Ctenophores
3. Echinoderms
4. Hemichordates
1. Cnidarians
2. Ctenophores
3. Echinoderms
4. Hemichordates
Subtopic: Phylum Ctenophora & Platyhelminthes |
91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Ctenophores:
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
| I: | are commonly known as sea walnuts or comb jellies |
| II: | are exclusively marine, radially symmetrical, diploblastic organisms with tissue level of organisation |
| III: | use cilia for locomotion |
| IV: | reproduce only by sexual means |
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Phylum Ctenophora & Platyhelminthes |
76%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Phylum Ctenophora & Platyhelminthes |
92%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Triploblastic organization, bilateral symmetry but lack of coelom will be seen in:
| 1. | Planaria | 2. | Pheretima |
| 3. | Periplaneta | 4. | Pinctada |
Subtopic: Phylum Ctenophora & Platyhelminthes |
86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A worm:
In light of the above statements, it will be reasonable to conclude that this worm belongs to Phlyum:
| I: | has dorso-ventrally flattened body |
| II: | is an endoparasite in human beings |
| III: | has hooks and suckers present at its anterior end |
| 1. | Platyhelminthes | 2. | Annelida |
| 3. | Aschelminthes | 4. | Cnidaria |
Subtopic: Phylum Ctenophora & Platyhelminthes |
90%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Consider the two statements:
1. Statement I is correct and Statement II is incorrect
2. Statement I is incorrect and Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
| Statement I: | Planaria is a free-living flatworm and possesses high regeneration capacity. |
| Statement II: | Hooks and suckers are present in parasitic flatworms. |
2. Statement I is incorrect and Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
Subtopic: Phylum Ctenophora & Platyhelminthes |
84%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
For osmoregulation and excretion, flatworms use:
| 1. | statocysts | 2. | osphradia |
| 3. | flame cells | 4. | antennal glands |
Subtopic: Phylum Ctenophora & Platyhelminthes |
94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Consider the given two statements:
| Assertion (A): | Flatworms have a dorso-ventrally flattened body. |
| Reason (R): | They are mostly endoparasites. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Phylum Ctenophora & Platyhelminthes |
78%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
© 2024 GoodEd Technologies Pvt. Ltd.