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. |
Assertion (A): | In gymnosperms, the pollen grains are released from the microsporangium and carried by air currents. |
Reason (R): | Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed. |
1. | (A) is False, (R) is True. |
2. | Both (A) and (R) are True and (R) correctly explains (A). |
3. | Both (A) and (R) are True and (R) does not correctly explain (A). |
4. | (A) is True, (R) is False. |
List-I | List-II | ||
(A) | Pteropsida | (I) | Psilotum |
(B) | Lycopsida | (II) | Equisetum |
(C) | Psilopsida | (III) | Adiantum |
(D) | Sphenopsida | (IV) | Selaginella |
Options: | (A) | (B) | (C) | (D) |
1. | II | III | I | IV |
2. | III | I | IV | II |
3. | II | III | IV | I |
4. | III | IV | I | II |
|
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
Match List -I with List-II:
List - I | List - II | ||
a. | Cedrus | (i) | Pteridophyte |
b. | Adiantum | (ii) | Gymnosperm |
c. | Sphagnum | (iii) | Liverwort |
d. | Marchantia | (iv) | Moss |
Choose the correct answer from the options given below:
a. | b. | c. | d. | |
1. | (ii) | (iii) | (i) | (iv) |
2. | (iii) | (i) | (iv) | (ii) |
3. | (ii) | (i) | (iv) | (iii) |
4. | (iii) | (iv) | (ii) | (i) |
List-I | List-II | ||
(a) | Spirogyra | (i) | Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte |
(b) | Fern | (ii) | Dominant haploid free-living gametophyte |
(c) | Funaria | (iii) | Dominant diploid sporophyte alternating with reduced gametophyte called prothallus |
(d) | Cycas | (iv) | Dominant haploid leafy gametophyte alternating with partially dependent multicellular sporophyte |
(a) | (b) | (c) | (d) | |
1. | (ii) | (iv) | (i) | (iii) |
2. | (iv) | (i) | (ii) | (iii) |
3. | (ii) | (iii) | (iv) | (i) |
4. | (iii) | (iv) | (i) | (ii) |