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.
1. Uniflagellate gametes - Polysiphonia
2. Biflagellate zoospores - Brown algae
3. Gemma cups - Marchantia
4. Unicellular organism - Chlorella
In bryophytes and pteridophytes, transport of male gametes requires?
| 1. | insects | 2. | birds |
| 3. | water | 4. | wind |
In which of the following gametophyte is not independent free-living?
| 1. | Funaria | 2. | Marchantia |
| 3. | Pteris | 4. | Pinus |
An alga which can be employed as food for human beings:
1. Ulothrix
2. Chlorella
3. Spirogyra
4. Polysiphonia
Gametophyte in the pteridophytes is
(i) Small, inconspicuous.
(ii) Long lived, unicellular.
(iii) Mostly photosynthetic thalloid or saprophytic.
(iv) Short lived, haploid.
How many statements are correct with respect to gametophyte?
1. Two
2.Three
3. Four
4. One
Development of the zygotes into young embryo takes within the female gametophytes in
1. Adiantum.
2. Selaginella.
3. Riccia.
4. Batrachospermum.
Monoecious plant of Chara shows the occurrence of:
| 1. | Stamen and carpel of the same plant |
| 2. | upper antheridium and lower oogonium on the same plant |
| 3. | upper ooganium and lower antheridium on the same plant |
| 4. | antheridiophore and archegoniophore on the same plant |
Mannitol is a sugar alcohol. It is as stored food in:
1. Fucus
2. Gracillaria
3. Chara
4. Porphyra
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