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Q. No.Consider the given two statements:
Assertion (A):
Equal weightage to vegetative and sexual characteristics in the artificial systems is not acceptable.
Reason (R):
The sexual characters are more easily affected by environment.
1.
Both (A) and (R) are True and (R) explains (A)
2.
Both (A) and (R) are True and (R) does not explain (A)
3.
(A) is True but (R) is False
4.
(A) is False but (R) is True
Subtopic: Classification System |
74%
From NCERT
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The members of phaeophyceae or brown algae;
| 1. | are found primarily in fresh water habitats. |
| 2. | possess chlorophyll a, c, carotenoids and xanthophylls. |
| 3. | store food as glycogen. |
| 4. | do not reproduce asexually. |
Subtopic: Pheophyceae: Brown Algae |
87%
From NCERT
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All the following are example of green alga except:
1. Ectocarpus
2. Chara
3. Ulothrix
4. Spirogyra
1. Ectocarpus
2. Chara
3. Ulothrix
4. Spirogyra
Subtopic: Pheophyceae: Brown Algae | Chlorophyceae: Green Algae |
91%
From NCERT
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Which of the following is not a feature of Red Algae?
| 1. | r-phycoerythrin is a major pigment. |
| 2. | Floridean starch is stored food. |
| 3. | Cell wall contains poly sulphate esters. |
| 4. | There are 2, unequal, lateral flagellar insertions. |
Subtopic: Pheophyceae: Brown Algae | Rhodophyceae: Red Algae and Importance of Algae |
86%
From NCERT
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Biflagellate zoospores that are pear-shaped and have two unequal laterally attached flagella are involved in:
| 1. | Asexual reproduction in brown algae |
| 2. | Asexual reproduction in red algae |
| 3. | Sexual reproduction in brown algae |
| 4. | Sexual reproduction in red algae |
Subtopic: Pheophyceae: Brown Algae |
71%
From NCERT
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Consider the given two statements:
| Assertion (A): | Bryophytes are also called amphibians of the plant kingdom. |
| Reason (R): | Bryophytes play an important role in plant succession on bare rocks/soil. |
| 1. | Both (A) and (R) are True and (R) explains (A) |
| 2. | Both (A) and (R) are True and (R) does not explain (A) |
| 3. | (A) is True but (R) is False |
| 4. | (A) is False but (R) is True |
Subtopic: Bryophytes |
83%
From NCERT
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How many of the given statements regarding sexual reproduction in Bryophytes are true?
1. 2
2. 3
3. 4
4. 5
| I: | The sex organs in bryophytes are multicellular. |
| II: | The male sex organ is called antheridium and they produce biflagellate antherozoids. |
| III: | The female sex organ called archegonium is flask-shaped and produces a single egg. |
| IV: | The antherozoids are released into water where they come in contact with archegonium. |
| V: | Zygotes undergo reduction division immediately. |
2. 3
3. 4
4. 5
Subtopic: Bryophytes |
71%
From NCERT
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How many of the given statements regarding the life cycle of mosses are true?
1. 0
2. 1
3. 2
4. 3
| I: | The predominant stage of the life cycle of a moss is the gametophyte. |
| II: | Protonema stage develops directly from a spore. |
| III: | Leafy stage bears the sex organs. |
2. 1
3. 2
4. 3
Subtopic: Bryophytes |
73%
From NCERT
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How many of the comparisons between Pinus and Cycas given below are correct:
1. 0
2. 2
3. 1
4. 3
| Pinus | Cycas | |
| I: | Coralloid roots | Mycrorrhizal associations |
| II: | Stems are branched | Stems are unbranched |
| III: | The male or female cones or strobili are borne on different trees | The male or female cones or strobili are borne on the same tree |
2. 2
3. 1
4. 3
Subtopic: Gymnosperms |
69%
From NCERT
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Identify the algal group:
1. Green algae
2. Brown algae
3. Red algae
4. Blue-green algae
| I: | They possess chlorophyll a, c, carotenoids and xanthophylls. |
| II: | Food is stored as complex carbohydrates, which may be in the form of laminarin or mannitol. |
2. Brown algae
3. Red algae
4. Blue-green algae
Subtopic: Pheophyceae: Brown Algae |
91%
From NCERT
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