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Q. No.Study the Assertion statement followed by the Reason statement given below:
Assertion (A):
The digestive system in Platyhelminthes is called incomplete.
Reason (R):
Platyhelminthes are mostly endoparasites found in animals including human beings.
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 Ctenophora & Platyhelminthes |
67%
From NCERT
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Notochord is:
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: | an endodermally derived rod-like structure. |
| II: | formed on the dorsal side during embryonic development in some animals. |
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: Phylum Chordata |
70%
From NCERT
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Aschelminthes are:
| 1. | radially symmetrical, triploblastic and pseudocoelomate animals. |
| 2. | bilaterally symmetrical, triploblastic and acoelomate animals. |
| 3. | bilaterally symmetrical, triploblastic and pseudocoelomate animals. |
| 4. | radially symmetrical, diploblastic and eucoelomate animals. |
Subtopic: Phylum Ctenophora & Platyhelminthes |
88%
From NCERT
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The type of circulatory system in which the blood is pumped out of the heart and the cells and tissues are directly bathed in it is found in all of the following except:
| 1. | Arthropods | 2. | Hemichordates |
| 3. | Most molluscs | 4. | Annelids |
Subtopic: Basis of Classification |
66%
From NCERT
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Members of Phylum Platyhelminthes typically have bodies that are ____ compressed.
1. dorso-laterally
2. bilaterally
3. ventro-laterally
4. dorso-ventrally
1. dorso-laterally
2. bilaterally
3. ventro-laterally
4. dorso-ventrally
Subtopic: Phylum Ctenophora & Platyhelminthes |
88%
From NCERT
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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. |
1. 2
2. 3
3. 4
4. 5
Subtopic: Phylum Porifera |
59%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A | Branchiostoma | P | Notochord persisting in adult |
| B | Ascidia | Q | Notochord present only in larval tail |
| C | Pristis | R | Cartilaginous endoskeleton |
| D | Catla | S | Bone endoskeleton |
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | P | Q | S | R |
| 3. | Q | P | R | S |
| 4. | Q | P | S | R |
Subtopic: Phylum Chordata | Comparative study of Cartilagenous & Bony Fishes |
76%
From NCERT
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Cyclostomes:
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: | are marine but migrate for spawning to fresh water. |
| II: | die within a few days of spawning. |
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: Phylum Chordata |
92%
From NCERT
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A water vascular system is characteristically seen in the members of Phylum:
1. Porifera
2. Echinodermata
3. Ctenophora
4. Mollusca
1. Porifera
2. Echinodermata
3. Ctenophora
4. Mollusca
Subtopic: Phylum Echinodermata |
88%
From NCERT
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The cell shown in the given figure defines animals belonging to:
1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Urochordates
1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Urochordates
Subtopic: Phylum Coelenterata |
95%
From NCERT
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