Q. No.Read the following statements and select the option with correct statements
| (a) | In Wolfia, the highly reduced female gametophyte present within ovule, is embryo sac. |
| (b) | The ploidy level of endosperm in Cycas and Eucalyptus is triploid. |
| (c) | Azolla is a water fern. |
| (d) | Majority of the red algae are marine with greater abundance in the warmer areas. |
1. (a) and (b) only
2. (b) and (c) only
3. (a), (b) and (c)
4. (a), (c) and (d)
Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?
Options :
| A | B | C | D | |
| 1. | Equisetum | Ginkgo | Selaginella | Lycopodium |
| 2. | Selaginella | Equisetum | Salvinia | Ginkgo |
| 3. | Funaria | Adiantum | Salvinia | Riccia |
| 4. | Chara | Marchantia | Fucus | Pinus |
Select the correct statement.
(1) Salvinia, Ginkgo and Pinus all are gymnosperms
(2) Sequoia is one of the tallest trees
(3) The leaves of gymnosperms are not well adapted to extremes of climate
(4) Gymnosperms are both homosporous and heterosporous
Besides paddy fields, cyanobacteria are also found inside vegetative part of
| 1. | Pinus | 2. | Cycas |
| 3. | Equisetum | 4. | Psilotum |
Which of the following genera is associated with coralloid roots?
| 1. | Cycas | 2. | Taxus |
| 3. | Pinus | 4. | Sequoia |
Match the following selected the correct option.
| Column - I | Column - II | ||
| A. | Pteris | (i) | Gymnosperm |
| B. | Cycas | (ii) | Bryophyte |
| C. | Sphagnum | (iii) | Algae |
| D. | Sargassum | (iv) | Pteridophyta |
1. A - (iv), B - (ii), C - (i), D - (iii)
2. A - (iv), B - (i), C - (ii), D - (iii)
3. A - (ii), B - (iii), C - (iv), D - (i)
4. A - (i), B - (iv), C - (iii), D - (ii)
Cycas is classified as a gymnosperms due to its
| 1. | motile sperms | 2. | fruit formation |
| 3. | naked ovule | 4. | pycnoxylic wood |
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. | Cycas | 2. | Equisetum |
| 3. | Psilotum | 4. | Pinus |
Pinus seeds cannot germinate and establish without fungal association. This is because:
1. its seeds contain inhibitors that prevent germination.
2. its embryo is immature.
3. it has an obligate association with mycorrhizae.
4. it has a very hard seed coat.
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