Which one of the following statements is wrong?
1. Algin and carrageenan are products of algae
2. Agar-agar is obtained from Gelidium and Gracilaria
3. Chlorella and Spirulina are used as space food
4. Mannitol is stored food in Rhodophyceae
Gemmae are present in:
1. Some Gymnosperms
2. Some Liverworts
3. Mosses
4. Pteridophytes
Assertion(A): | The precursor to seed habit is seen in heterosporous ferns |
Reason(R): | The female gametophyte is retained for variable periods in heterosporous ferns |
1. | Both (A) and (R) are True, and (R) is the correct explanation of (A) |
2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A) |
3. | (A) is True, but (R) is False |
4. | (A) is False, but (R) is False |
List-I | List-II | ||
(a) | Chlamydomonas | (i) | Moss |
(b) | Cycas | (ii) | Pteridophyte |
(c) | Selaginella | (iii) | Alga |
(d) | Sphagnum | (iv) | Gymnosperm |
(a) | (b) | (c) | (d) | |
1. | (iii) | (i) | (ii) | (iv) |
2. | (iii) | (iv) | (ii) | (i) |
3. | (iii) | (ii) | (i) | (iv) |
4. | (ii) | (iii) | (i) | (iv) |
Which one of the following structures is haploid in its ploidy level?
1. Primary Endospore Nucleus
2. Microspore Mother cell
3. Protonemal cell of a moss
4. Primary endosperm nucleus in dicot
Which of the following algae produce Carrageen?
1. | Red algae | 2. | Blue-green algae |
3. | Green algae | 4. | Brown algae |
Assertion (A): | The first stage of gametophyte in the life cycle of moss is protonema stage. |
Reason (R): | Protonema develops directly from spores produced in capsule. |
1. | (A) is False but (R) is True. |
2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
4. | (A) is True but (R) is False. |