- 1(current)
Q. No.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. | Spongilla | P. | Sea-fan |
| B. | Euspongia | Q. | Brain coral |
| C. | Gorgonia | R. | Fresh Water sponge |
| D. | Meandrina | S. | Sea-pen |
| E. | Pennatula | T. | Bath sponge |
| A | B | C | D | E | |
| 1. | T | R | P | Q | S |
| 2. | R | T | P | Q | S |
| 3. | T | R | Q | S | P |
| 4. | R | T | S | P | Q |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |
 80%
From NCERT
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Regarding the cell shown in the given figure:
| I: The name Cnidaria is derived from this cell |  |
| II: The stinging capsule present in the cell is called as nematode | |
| III: These cells help cnidarians in anchorage, defence and in capturing the prey |
1. While I and II are correct, III is incorrect
2. I, II and III are correct
3. Only II is incorrect
4. Only I is correct
Subtopic: Â Phylum Coelenterata |
 52%
From NCERT
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Identify the incorrect statement regarding animals belonging to the Phylum Cnidaria:
| 1. | Gastrovascular cavity has a single opening, mouth on hypostome. |
| 2. | Corals are cnidarians and have a skeleton of calcium carbonate. |
| 3. | They exhibit tissue level of organization and are diploblastic. |
| 4. | Digestion is exclusively intracellular. |
Subtopic: Â Phylum Coelenterata |
 83%
From NCERT
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Consider the following statements regarding basic body plans in Cnidaria:
| I: | Polyp is sessile and cylindrical form as seen in Hydra and Adamsia. |
| II: | Medusa is umbrella-shaped and free swimming form as seen in Aurelia. |
| 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: Â Phylum Coelenterata |
 89%
From NCERT
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In Obelia:
| a: | both polyp and medusa forms exist during its life cycle |
| b: | metagenesis, a sort of alternation of generation, is seen |
| c: | polyps produce medusae sexually and medusae form the polyps sexually |
| 1. | only a is correct | 2. | only a and b are correct |
| 3. | only c is correct | 4. | a, b and c are correct |
Subtopic: Â Phylum Coelenterata |
 84%
From NCERT
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Match each item in Column I with their correct match in Column II and select the answer from the codes given:
Codes:
| Column I | Column II | ||
| A. | Physalia | P. | Sea-fan |
| B. | Adamsia | Q. | Sea anemone |
| C. | Pennatula | R. | Sea-pen |
| D. | Gorgonia | S. | Portuguese men of war |
| A | B | C | D | |
| 1. | S | Q | R | P |
| 2. | S | R | Q | P |
| 3. | P | Q | R | S |
| 4. | S | P | Q | R |
Subtopic: Â Phylum Coelenterata |
 90%
From NCERT
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Given below is the schematic representation of the life cycle of Obelia, a cindarian. Consider the given two statements:
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. I is incorrect and II is correct
| I: | This type of life cycle is called as metagenesis and it is a sort of alternation of generation. |
| II: | Polyps in the life cycle of cnidarians are haploid and medusae are diploid. |
2. Both I and II are correct but II does not explain I
3. I is correct and II is incorrect
4. I is incorrect and II is correct
Subtopic: Â Phylum Coelenterata |
 58%
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- 1(current)
Q. No.
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