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 |
Select the wrong statement:
| 1. | Anisogametes differ either in structure, function or behaviour |
| 2. | In Oomycetes, the female gamete is smaller and motile, while the male gamete is larger and non-motile |
| 3. | Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy |
| 4. | Isogametes are similar in structure, function and behaviour |
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 heterosporous |
| 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 |
| 1. | larger but to have smaller sex organs |
| 2. | larger and to have large sex organs |
| 3. | smaller and to have smaller sex organs |
| 4. | smaller but to have larger sex organs |
Mannitol is a sugar alcohol. It is as stored food in:
1. Fucus
2. Gracillaria
3. Chara
4. Porphyra