What is the function of germ pores?
1. Absorption of water for seed germination
2. Initiation of pollen tube
3. Release of male gametes
4. The emergence of radicle
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following statements is wrong?
1. | Vegetative cell is larger than generative cell |
2. | Pollen grains in some plants remain viable for months |
3. | Intine is made up of cellulose and pectin |
4. | When pollen is shed at a two-celled stage, double fertilization does not take place |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
What is common between vegetative reproduction and Apomixis?
1. Both produce progeny identical to the parent
2. Both are applicable to only dicot plants
3. Both bypass the flowering phase
4. Both occur round the year
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In angiosperms, functional megaspore develops into:
1. Pollen sac
2. Embryo sac
3. Ovule
4. Endosperm
Endosperm is formed during double fertilization by:
1. Two polar nuclei & one male gamete
2. One polar nucleus & one male gamete
3. Ovum and male gamete
4. Two polar nuclei & two male gametes
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In Angiosperms, pollen tubes liberate their male gametes into the:
1. Central cell
2. Antipodal cells
3. Egg cell
4. Synergids
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Dioecy in flowering plants prevents:
1. autogamy but not geitonogamy
2. geitonogamy but not autogamy
3. both autogamy and geitonogamy
4. neither autogamy nor geitonogamy
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
1. | (a), (b) and (c) only | 2. | (b), (c) and (d) only |
3. | (b), (c) and (e) only | 4. | (a), (d) and (e) only |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which is the most common type of embryo sac in angiosperms?
1. Tetrasporic with one mitotic stage of division
2. Monosporic with three sequential mitotic divisions
3. Monosporic with two sequential mitotic divisions
4. Bisporic with two sequential mitotic divisions
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.