- 1(current)
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: Â Basis of Classification |
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Consider the given two statements:
| Assertion (A): | Roundworms (phylum Nematoda) are pseudocoelomates. |
| Reason (R): | Pseudocoelom provides protection for internal organs and facilitates movement of nutrients. |
| 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. | (A) is False but (R) is True. |
Subtopic: Â Basis of Classification |
From NCERT
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Read the following statements carefully and choose the option with only incorrect statements.
1. (a) and (b)
2. (b) and (c)
3. (a), (b) and (c)
4. (a) and (d)
| a. | All multicellular animals exhibit the same pattern of organisation of cells. |
| b. | Organ level of organisation is exhibited by members of Platyhelminthes and other higher phyla where tissues are grouped together to form organs. |
| c. | Organ systems in different groups of animals exhibit various patterns of complexities. |
| d. | In all multicellular animals which have organ level of body organisation, a complete digestive system has two opening, mouth and anus. |
1. (a) and (b)
2. (b) and (c)
3. (a), (b) and (c)
4. (a) and (d)
Subtopic: Â Basis of Classification |
 52%
From NCERT
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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: Â Basis of Classification |
 50%
From NCERT
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Given below are two statements :
In light of the above statements, choose the most appropriate answer from the options given below :
| Statement I: | All animals with bilateral symmetry are triploblastic. |
| Statement II: | All animals with bilateral symmetry may not have a coelom. |
| 1. | Statement I is correct but Statement II is incorrect. |
| 2. | Statement I is incorrect but Statement II is correct. |
| 3. | Both Statement I and Statement II are correct. |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Â Basis of Classification |
From NCERT
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An animal with the following body wall organization will not have:
1. Cephalization
2. Three germ layers
3. Bilateral symmetry
4. A complete digestive tract
Subtopic: Â Basis of Classification:I |Â Basis of Classification:II |Â Basis of Classification |
From NCERT
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Consider the given two statements:
| Assertion (A): | Roundworms are considered pseudocoelomates. |
| Reason (R): | They have a body cavity not lined with mesoderm. |
| 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 Phylum Aschelminthes |Â Basis of Classification |
 58%
From NCERT
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