Select Chapter Topics:
Q. No.In metamerism, there is serial repetition of unit subdivisions of:
I.
Ectoderm products
II.
Mesoderm products
III.
Endoderm products
1.
Only II
2.
Only I and II
3.
Only II and III
4.
I, II and III
Subtopic: Basis of Classification |
Level 4: Below 35%
Hints
In a typical mollusc:
| I: | Head, muscular foot and visceral hump are body segments. |
| II: | Mantle over the visceral hump is formed by a layer of skin. |
| III: | Radula is a file-like rasping organ |
| 1. | Only III is correct |
| 2. | Only II and III are correct |
| 3. | Only I and III are correct |
| 4. | Only I and II are correct |
Subtopic: Phylum Mollusca |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Bilaterally symmetrical animals can be acoelomate, pseudocoelomate, or coelomate. Study the diagrammatic representation of body cavity and the animal illustrated in diagrams A to D.
| A. |  |
 |
Triploblastic acoelomate solid mesoderm |
| B. |  |
 |
Pseudocoelomate partially open coelom, formed by retention of embryonic blastocoel |
| C. |  |
 |
Coelomate, body cavity lined by mesoderm |
| D. |  |
 |
Diploblastic acoelomate |
How many of the above illustrations are correct?
| 1. | Four | 2. | Three |
| 3. | Two | 4. | One |
Subtopic: Basis of Classification:I | Basis of Classification:II |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Diagrams (A, B, C and D) of four different animals are given below. Which one of the following option identifies the animal, its phylum and one of its characters correctly ?
| Animal | Phylum | Character | |
| B | Rana | Amphibia | 3 – chambered heart |
| C | Asterias | Echinodermata | Water canal system |
| A | Aurelia | Coelenterata | Cnidoblast cells |
| D | Naja | Chordata | Non-poisonous snake |
1. B
2. C
3. A
4. D
Subtopic: Phylum Coelenterata | Phylum Echinodermata | Phylum Chordata | Study of Amphibians |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
| I: | Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature |
| II: | Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature |
Select the most appropriate option:
1. I is correct but II is incorrect.
2. I is incorrect but II is correct.
3. Both I and II are correct.
4. Both I and II are incorrect.
Subtopic: Study of Amphibians | Study of Reptilia |
59%
Level 3: 35%-60%
NEET - 2022
Hints
What will you look for to identity the sex of the following? Select the correct match.
| 1. | Male frog – a copulatory pad on the first digit of the hind limb |
| 2. | Female cockroach – anal cerci |
| 3. | Male shark – claspers borne on pelvic fins |
| 4. | Female Ascaris – sharply curved posterior end |
Subtopic: Comparative study of Cartilagenous & Bony Fishes | Class Chondrichthyes |
60%
Level 2: 60%+
AIPMT - 2011
Please attempt this question first.
Hints
Please attempt this question first.
How many of the given statements regarding members of Porifera are correct?
1. 2
2. 3
3. 4
4. 5
| I: | They are exclusively marine. |
| II: | They have cellular level of organisation. |
| III: | They have a water vascular system with tube feet. |
| IV: | Digestion is intracellular. |
| V: | Fertilisation is external and development is direct. |
2. 3
3. 4
4. 5
Subtopic: Phylum Porifera |
57%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
The number of animals having bilateral symmetry and a true coelom from the list given in the box will be:
1. 4
2. 5
3. 6
4. 7
| Fasciola, Pila, Chaetopleura, Ancylostoma, Saccoglossus, Meandrina, Hirudinaria, Labeo, Ichthyophis |
1. 4
2. 5
3. 6
4. 7
Subtopic: Basis of Classification |
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Study the Assertion statement followed by the Reason statement given below:
| Assertion (A): | Hemichordata was earlier considered as a sub-phylum under phylum Chordata but now it is placed as a separate phylum under non-chordata. |
| Reason (R): | Stomochord of hemichordates and notochord of chordates are homologous structures. |
| 1. | (A) is True but (R) is False. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Phylum Hemichordata |
Level 3: 35%-60%
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 | Class Chondrichthyes |
52%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
Select Chapter Topics:
© 2026 GoodEd Technologies Pvt. Ltd.