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Q. No.Which one of the following statements is wrong?
1.
Algae increase the level of dissolved oxygen in the immediate environment
2.
Algin is obtained from red algae and carrageenan from brown algae
3.
Agar-agar is obtained from Gelidium and Gracilaria
4.
Laminaria and Sargassum are used as food
Subtopic: Algae |
88%
Level 1: 80%+
NEET - 2016
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Which of the following statement is correct?
| 1. | Ovules are not enclosed by the ovary wall in gymnosperms. |
| 2. | Selaginella is heterosporous, while Salvinia is homosporous. |
| 3. | Horsetails are gymnosperms. |
| 4. | Stems are usually unbranched in both Cycas and Cedrus. |
Subtopic: Gymnosperms: I | Gymnosperms |
81%
Level 1: 80%+
NEET - 2018
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Which one is wrongly matched?
| 1. | Uniflagellate gametes - Polysiphonia |
| 2. | Biflagellate zoospores - Brown algae |
| 3. | Gemma cups - Marchantia |
| 4. | Unicellular organism - Chlorella |
Subtopic: Rhodophyceae: Red Algae and Importance of Algae |
83%
Level 1: 80%+
NEET - 2018
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60%
Level 2: 60%+
NEET - 2017
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Life cycles of Ectocarpus and Fucus respectively are:
1. Diplontic, Haplodiplontic
2. Haplodiplontic, Diplontic
3. Haplodiplontic, Haplontic
4. Haplontic, Diplontic
76%
Level 2: 60%+
NEET - 2017
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Select the mismatch
1. Cycas - Dioecious
2. Salvinia - Heterosporous
3. Equisetum - Homosporous
4. Pinus - Dioecious
Subtopic: Gymnosperms: I | Gymnosperms |
72%
Level 2: 60%+
NEET - 2017
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In bryophytes and pteridophytes, transport of male gametes requires?
| 1. | insects | 2. | birds |
| 3. | water | 4. | wind |
Subtopic: Bryophytes | Pteridophytes |
92%
Level 1: 80%+
NEET - 2016
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Select the correct statement:
| 1. | Salvinia, Ginkgo and Pinus all are gymnosperms |
| 2. | Sequoia is one of the tallest trees |
| 3. | The leave of gymnosperms are not well adapted to extremes of climate |
| 4. | Gymnosperms are both homosporous and heterosporous |
Subtopic: Examples of Gymnosperms |
87%
Level 1: 80%+
NEET - 2016
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Read the following five statements (I to V) and select the option with all correct statements.
| I: | Mosses and lichens are the first organisms to colonise bare rock. |
| II: | Selaginella is a homosporous pteridophyte. |
| III: | Coralloid roots in Cycas have VAM. |
| IV: | Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic. |
| V: | In gymnosperms, male and female gametophytes are present within sporangia located on sporophytes. |
| 1. | I, III and IV | 2. | II, III and IV |
| 3. | I, IV and V | 4. | II, III and V |
Subtopic: Bryophytes | Pteridophytes | Gymnosperms |
59%
Level 3: 35%-60%
NEET - 2015
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In which of the following gametophyte is not independent free-living?
| 1. | Funaria | 2. | Marchantia |
| 3. | Pteris | 4. | Pinus |
Subtopic: Gymnosperms: I | Gymnosperms |
74%
Level 2: 60%+
NEET - 2015
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