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) |
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
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) |
Pinus seeds cannot germinate and establish without fungal association. This is because:
1. its seeds contain inhibitors that prevent germination.
2. its embryo is immature.
3. it has an obligate association with mycorrhizae.
4. it has a very hard seed coat.
In which of the following gametophyte is not independent free-living?
1. | Funaria | 2. | Marchantia |
3. | Pteris | 4. | Pinus |
Which of the following statements is incorrect about gymnosperms?
1. They are heterosporous
2. Male and female gametophytes are free-living
3. Most of them have narrow leaves with thick cuticles
4. Their seeds are not covered
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) |
Given are the following five statements (I - V) for your consideration:
I: | In Equisetum, the female gametophyte is retained on the parent sporophyte |
II: | In Ginkgo, male gametophyte is not independent |
III: | The sporophyte in Marchantia is more developed than that in Polytrichum |
IV: | Sexual reproduction in Volvox is isogamous |
V: | The spores of slime moulds lack cell walls |
How many of the above statements is/are correct?
1. | Three | 2. | Four |
3. | One | 4. | Two |
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. |