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Q. No.Select the correct statement:
1.
The leaves of gymnosperms are not well adapted to extremes of climate
2.
Gymnosperms are both homosporous and heterosporous
3.
Salvinia, Ginkgo and Pinus all are gymnosperms
4.
Sequoia is one of the tallest trees
Subtopic: Gymnosperms |
79%
From NCERT
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In bryophytes and pteridophytes, transport of male gametes requires:
1. Water
2. Wind
3. Insects
4. Birds
Subtopic: Bryophytes |
91%
From NCERT
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Conifers are adapted to tolerate extreme environmental conditions because of
| 1. | presence of vessels | 2. | broad hardy leaves |
| 3. | superficial stomata | 4. | thick cuticle |
Subtopic: Gymnosperms |
82%
From NCERT
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Which one of the following statements is wrong?
| 1. | Laminaria and Sargassum are used as food. |
| 2. | Algae increase the level of dissolved oxygen in the immediate environment. |
| 3. | Algin is obtained from red algae, and carrageenan from brown algae. |
| 4. | Agar-agar is obtained from Gelidium and Gracilaria. |
Subtopic: Algae |
81%
From NCERT
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Subtopic: Algae |
59%
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Select the mismatch:
| 1. | Pinus - Dioecious | 2. | Cycas - Dioecuous |
| 3. | Salvinia - Heterosporous | 4. | Equisetum - Homosporous |
Subtopic: Gymnosperms |
75%
From NCERT
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Functional megaspore in an angiosperm develops into:
| 1. | Ovule | 2. | Endosperm |
| 3. | Embryo sac | 4. | Embryo |
Subtopic: General Account of Angiosperms (OLD NCERT) |
72%
From NCERT
NEET - 2017
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Subtopic: General Account of Angiosperms (OLD NCERT) |
92%
From NCERT
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Life cycle of Ectocarpus and Fucus respectively are:
| 1. Haplontic, Diplontic | 2. Diplontic, Haplodiplontic |
| 3. Haplodiplontic, Diplontic | 4. Haplodiplontic, Haplontic |
Subtopic: Life Cycle Patterns in Plants (OLD NCERT) |
79%
From NCERT
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Fusion of two gametes which are dissimilar in size is termed as
| 1. | Oogamy | 2. | Isogamy |
| 3. | Anisogamy | 4. | Zoogamy |
Subtopic: Algae |
85%
From NCERT
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