Q. No.Which one of the following is a vascular cryptogam?
1.
Equisetum
2.
Ginkgo
3.
Marchantia
4.
Cedrus
Which one of the following is considered important in the development of seed habit?
| 1. | Dependent sporophyte | 2. | Heterospory |
| 3. | Halplontic life cycle | 4. | Free-living gametophyte |
Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of:
1. xerophytes
2. mesophytes
3. epiphytes
4. hydrophyte
| 1. | Pteris | 2. | Funaria |
| 3. | Polytrichum | 4. | Cedrus |
1. Dryopteris
2. Salvinia
3. Adiantum
4. Equisetum
| 1. | absence of resin duct and leaf venation |
| 2. | presence of vessel elements and absence of archegonia |
| 3. | periandl and two integuments |
| 4. | embryo development and apical meristem |
Flagellated male gametes are present in all three of which one of the following sets?
1. Anthoceros, Funaria, and Spirogyra
2. Zygnema, Saprolegnia, and Hydrilla
3. Fucus, Marsilea, and Calotropis
4. Riccia, Dryopteris, and Cycas
In gymnosperms, the pollen chamber represents:
| 1. | a cell in the pollen grain in which the sperms are formed |
| 2. | a cavity in the ovule in which pollen grains are stored after pollination |
| 3. | an opening in the megagametophyte through which the pollen tube approaches the egg |
| 4. | the microsporangium in which pollen grains develop |
In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:
1. there is no change in the success rate of fertilization
2. there is a high degree of sterility
3. one can conclude that the plant is apomictic
4. self-fertilization is prevented
Spore dissemination in some liverworts is aided by:
1. elaters
2. indusium
3. calypatra
4. peristome teeth
© 2024 GoodEd Technologies Pvt. Ltd.