Q. No.
Select the correct statement with respect to gemmae
| a. | These are specialised reproductive structures in members of thallophytes and bryophytes |
| b. | These are green, unicellular & asexual buds |
| c. | These are formed in small receptacles located on thalli |
| d. | Single gemma forms two new individuals after germination |
| e. | These are chlorophyllous and multicellular structures |
| f. | They germinate and make monoecious thallus of Marchantia |
2. b,c,d and f
3. c,d and e
4. b,c and f
Select an incorrect match
1. Psilopsida – Psilotum
2. Sphenopsida – Selaginella
3. Lycopsida – Lycopodium
4. Pteropsida – Dryopteris
Which of the following characteristics are common in both Selaginella and Pinus?
| (i) | Spores are of two types. |
| (ii) | Vascular tissues are not present. |
| (iii) | Main plant body is sporophyte. |
| (iv) | Male and female gametophytes are retained on the sporophyte. |
1. (i), (ii) and (iv)
2. (i), (iii) and (iv)
3. (i) and (iii) only
4. (iii) and (iv) only
Secondary protonema of moss
| 1. | Helps in propagation by fragmentation. |
| 2. | Helps in propagation by budding. |
| 3. | Have leafy stage as lateral bud. |
| 4. | All the above |
Which one is correct about heterosporous pteridophytes?
1. Microspore and megaspores develop into the male and the female gametophytes respectively.
2. The female gametophyte are retained on the parent sporophyte for a variable period.
3. The development of the zygote into the embryo takes place within the female gametophyte.
4. All
Gemmae are the specialized structures produced in liverworts. These are
| 1. | Non-green, multi-cellular, asexual buds which develop in gemma cups. |
| 2. | Green, multi-cellular, asexual buds which develop in gemma cups. |
| 3. | Non-green, multi-cellular, diploid, sexual spores. |
| 4. | Green, unicellular, diploid, sexual spores. |
In gymnosperms, the ovule is naked because
1. Ovary wall is absent
2. Integuments are absent
3. Perianth is absent
4. Nucellus is absent
Which of the following statement is incorrect regarding bryophytes?
1. They are dependent on water for sexual reproduction.
2. The main plat body is diploid
3. They usually occur in damp, humid and shaded localities.
4. They play an important role in plant succession on bare rocks.
Mark the incorrect statement (with respect to gymnosperms)
| 1. | Sequoia is one of the tallest tree species |
| 2. | Dimophihc roots, stem and leaves in pinus |
| 3. | Generally tap roots are present |
| 4. | Palmately compound leaves in Cycas |
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