Select Question Set:
Q. No.Select the correct description of the two figures A and B, given below, showing basic body forms in Cnidarians:
A
B
1.
A is Medusa and is free-swimming; B is Polyp and is sessile
2.
A is Polyp and is free-swimming; B is Medusa and is sessile
3.
A is Medusa and is sessile; B is Polyp and is free-swimming
4.
A is Medusa and is free-swimming; B is Polyp and is free-swimming
Subtopic: Phylum Coelenterata |
87%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Fertilisation is external and development is indirect in:
1. I and V only
2. II, III and IV only
3. IV only
4. I, IV and V only
| I: | Sponges |
| II: | Echinoderms |
| III: | Hemichordates |
| IV: | Comb jellies |
| V: | Flatworms |
1. I and V only
2. II, III and IV only
3. IV only
4. I, IV and V only
Subtopic: Basis of Classification |
73%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Chondrichthyes and Mammals:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | do not belong to the same class but belong to the same super-class. |
| II: | are placed under the same division in sub-phylum vertebrata. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
53%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Ascidia, Salpa, Doliolum and Branchiostoma are all:
A: Chordates
B: Vertebrates
C: Urochordates
D: Protochordates
A: Chordates
B: Vertebrates
C: Urochordates
D: Protochordates
| 1. | A and B are correct | 2. | A and C are correct |
| 3. | A and D are correct | 4. | B and C are correct |
Subtopic: Phylum Chordata |
65%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The figure shows cross-section of the body of an animal. This animal:
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: | lacks a coelom |
| II: | is triploblastic |
| III: | is expected to have bilateral symmetry |
| IV: | is expected to be dorso-ventrally flattened |
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
Subtopic: Basis of Classification |
57%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Cnidarians, Ctenophores and Echinoderms resemble each other in:
1. Only I and II are correct
2. I, II and III are incorrect
3. Only I is correct
4. I, II and III are correct
| I: | having radial symmetry in adults and larvae |
| II: | having three germ layers |
| III: | lacking a coelom |
1. Only I and II are correct
2. I, II and III are incorrect
3. Only I is correct
4. I, II and III are correct
Subtopic: Basis of Classification:I | Phylum Aschelminthes |
53%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
How do members of hemichordates resemble chordates?
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | The body is segmented metamerically. |
| II: | The symmetry is bilateral and they have a true coelom |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Phylum Hemichordata | Phylum Chordata |
67%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
What is common to animals belonging to Cnidaria and Ctenophora?
1. Only I and II are correct
2. Only III is correct
3. I, II and III are incorrect
4. I, II and III are correct
| I: | Cnidoblasts |
| II: | Triploblastic organisation |
| III: | Well developed polyp stage in life cycle |
1. Only I and II are correct
2. Only III is correct
3. I, II and III are incorrect
4. I, II and III are correct
Subtopic: Phylum Coelenterata | Phylum Ctenophora & Platyhelminthes |
74%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
All members are not exclusively marine in:
1. Hemichordata
2. Ctenophora
3. Echinodermata
4. Porifera
1. Hemichordata
2. Ctenophora
3. Echinodermata
4. Porifera
Subtopic: Phylum Porifera |
83%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Platyhelminthes are (A), Aschelminthes are (B) and Molluscs are (C).
| A | B | C | |
| 1 | Pseudocoelomate | Acoelmate | Eucoelomate |
| 2 | Acoelmate | Pseudocoelomate | Acoelmate |
| 3 | Acoelmate | Pseudocoelomate | Eucoelomate |
| 4 | Acoelomate | Pseudocoelomate | Pseudocoelomate |
Subtopic: Phylum Ctenophora & Platyhelminthes | Phylum Aschelminthes | Phylum Mollusca |
91%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.