Q. No.The gametes are pyriform and bear two laterally attached flagella in:
1.
Chlorophyceae
2.
Phaeophyceae
3.
Rhodophyceae
4.
All algae
The sporangium of ferns is protected by a specialized structure called as the:
1. annulus
2. indusium
3. fiddlehead
4. sorus
Which of the following Greek root word means "naked" and hence gives name to plants like cycas and pines?
| 1. | angeion | 2. | sperm |
| 3. | gymnos | 4. | gynos |
The red algae reproduce:
| 1. | asexually by non motile spores and sexually by non motile gametes |
| 2. | asexually by non motile spores and sexually by motile gametes |
| 3. | asexually by motile spores and sexually by non motile gametes |
| 4. | asexually by motile spores and sexually by motile gametes |
Sexual reproduction takes place through non flagellated gametes that are similar in size in:
| 1. | Ulothrix | 2. | Spirogyra |
| 3. | Volvox | 4. | Fucus |
The term ‘strobilus’ in a gymnosperm defines a:
| 1. | collection of megasporophylls |
| 2. | collection of microsporophylls |
| 3. | site of sporangial development |
| 4. | collection of megasporophylls, microsporophylls and/or a site of sporangial development |
Female sex organs of gymnosperms are called:
| 1. | Archegonia | 2. | Female strobili |
| 3. | Megasporangium | 4. | Megasporophyll |
The microstrobilus in gymnosperms represents the:
| 1. | "female" cone | 2. | megasporangium-bearing cone |
| 3. | pollen-bearing cone | 4. | none of these |
In angiosperms, one of the male gametes fuses with the secondary nucleus to produce:
1. Endosperm
2. Zygote
3. Embryo
4. Primary endosperm nucleus
Identify the incorrect statement regarding algae:
| 1. | Algae contain chlorophyll |
| 2. | Algae are autotrophic |
| 3. | Body of an alga is composed of pseudoparenchyma and hyphae |
| 4. | Cell wall of an alga is composed of true cellulose. |
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