Male gametes are flagellated in:
1. Polysiphonia
2. Anabaena
3. Ectocarpus
4. Spirogyra
Which one of the following shows isogamy with non-flagellated gametes?
1. Sargassum
2. Ectocarpus
3. Ulothrix
4. Spirogyra
Which of the following is responsible for peat formation?
1. Marchantia
2. Riccia
3. Funaria
4. Sphagnum
An alga which can be employed as food for human beings:
1. Ulothrix
2. Chlorella
3. Spirogyra
4. Polysiphonia
1. | Cycas | 2. | Equisetum |
3. | Psilotum | 4. | Pinus |
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 |
Read the following statements (A-E) and answer the question which follows them.
A: | In liverworts, mosses, and ferns gametophytes are free-living |
B: | Gymnosperms and some ferns are hetero-sperms |
C: | Sexual reproduction in Fucus, Volvox and Albugo is oogamous |
D: | The sporophyte in liverworts is more elaborate than that in mosses |
E: | Both, Pinus and Marchantia are dioecious |
How many of the above statements are correct?
1. Two
2. Three
3. Four
4. One
Cycas and Adiantum resemble each other in having:
1. Seeds
2. Motile sperms
3. Cambium
4. Vessels
Which one of the following is the correct statement?
1. | Pteridophyte gametophyte has a protonemal and leafy stage |
2. | In gymnosperms, female gametophyte is free-living |
3. | Antheridiophores and protonema are present in pteridophytes |
4. | Origin of seed habit can be traced in pteridophytes |