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 not correct but (R) is correct. |
2. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
3. | Both (A) and (R) are correct but (R) is NOT the correct explanation of (A). |
4. | (A) is correct but (R) is not correct. |
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 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. |
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) Spirogyra | (i) Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte |
(b) Fern | (ii) Dominant haploid free-living gametophyte |
(c) Funaria | (ii) 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) |
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) |
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