Meiosis requires only one cycle of DNA replication which takes place during S-phase of interphase before meiosis-I begins.
BIOXI10: CELL CYCLE AND CELL DIVISION
335955
How many meiotic divisions are necessary to produce 600 pollen grains?
1 200
2 100
3 150
4 300
Explanation:
Each meiotic division in pollen mother cell (2n) results in the production of 4 pollen grains (n). Therefore, the number of meiotic divisions to give n pollen grains = n/4. For the production of 600 pollen grains, 600/4 = 150 meiotic division are required.
BIOXI10: CELL CYCLE AND CELL DIVISION
335956
Meiosis in plants can take place in :-
1 Megaspore mother cell
2 Microspore mother cell
3 Both
4 None of them
Explanation:
Meiosis takes place in specialised diploid cells. In plants, microspore mother cell produces 4 microspores/pollen grains while megaspore mother cells produces 4 megaspores/eggs out of which only one remains functional.
BIOXI10: CELL CYCLE AND CELL DIVISION
335957
Which of the following does not hold about meiosis?
1 Four diploid cells are formed at the end of meiosis.
2 It involves the pairing of homologous chromosomes and recombination between them.
3 It involves the two sequential cycle of nuclear and cell division called meiosis I and II but only a single cycle of DNA replication.
4 All of these
Explanation:
When a diploid cell undergoes meiosis, it undergoes two sequential nuclear and cytoplasmic divisions to give rise to four haploid daughter cells.
Meiosis requires only one cycle of DNA replication which takes place during S-phase of interphase before meiosis-I begins.
BIOXI10: CELL CYCLE AND CELL DIVISION
335955
How many meiotic divisions are necessary to produce 600 pollen grains?
1 200
2 100
3 150
4 300
Explanation:
Each meiotic division in pollen mother cell (2n) results in the production of 4 pollen grains (n). Therefore, the number of meiotic divisions to give n pollen grains = n/4. For the production of 600 pollen grains, 600/4 = 150 meiotic division are required.
BIOXI10: CELL CYCLE AND CELL DIVISION
335956
Meiosis in plants can take place in :-
1 Megaspore mother cell
2 Microspore mother cell
3 Both
4 None of them
Explanation:
Meiosis takes place in specialised diploid cells. In plants, microspore mother cell produces 4 microspores/pollen grains while megaspore mother cells produces 4 megaspores/eggs out of which only one remains functional.
BIOXI10: CELL CYCLE AND CELL DIVISION
335957
Which of the following does not hold about meiosis?
1 Four diploid cells are formed at the end of meiosis.
2 It involves the pairing of homologous chromosomes and recombination between them.
3 It involves the two sequential cycle of nuclear and cell division called meiosis I and II but only a single cycle of DNA replication.
4 All of these
Explanation:
When a diploid cell undergoes meiosis, it undergoes two sequential nuclear and cytoplasmic divisions to give rise to four haploid daughter cells.
Meiosis requires only one cycle of DNA replication which takes place during S-phase of interphase before meiosis-I begins.
BIOXI10: CELL CYCLE AND CELL DIVISION
335955
How many meiotic divisions are necessary to produce 600 pollen grains?
1 200
2 100
3 150
4 300
Explanation:
Each meiotic division in pollen mother cell (2n) results in the production of 4 pollen grains (n). Therefore, the number of meiotic divisions to give n pollen grains = n/4. For the production of 600 pollen grains, 600/4 = 150 meiotic division are required.
BIOXI10: CELL CYCLE AND CELL DIVISION
335956
Meiosis in plants can take place in :-
1 Megaspore mother cell
2 Microspore mother cell
3 Both
4 None of them
Explanation:
Meiosis takes place in specialised diploid cells. In plants, microspore mother cell produces 4 microspores/pollen grains while megaspore mother cells produces 4 megaspores/eggs out of which only one remains functional.
BIOXI10: CELL CYCLE AND CELL DIVISION
335957
Which of the following does not hold about meiosis?
1 Four diploid cells are formed at the end of meiosis.
2 It involves the pairing of homologous chromosomes and recombination between them.
3 It involves the two sequential cycle of nuclear and cell division called meiosis I and II but only a single cycle of DNA replication.
4 All of these
Explanation:
When a diploid cell undergoes meiosis, it undergoes two sequential nuclear and cytoplasmic divisions to give rise to four haploid daughter cells.
Meiosis requires only one cycle of DNA replication which takes place during S-phase of interphase before meiosis-I begins.
BIOXI10: CELL CYCLE AND CELL DIVISION
335955
How many meiotic divisions are necessary to produce 600 pollen grains?
1 200
2 100
3 150
4 300
Explanation:
Each meiotic division in pollen mother cell (2n) results in the production of 4 pollen grains (n). Therefore, the number of meiotic divisions to give n pollen grains = n/4. For the production of 600 pollen grains, 600/4 = 150 meiotic division are required.
BIOXI10: CELL CYCLE AND CELL DIVISION
335956
Meiosis in plants can take place in :-
1 Megaspore mother cell
2 Microspore mother cell
3 Both
4 None of them
Explanation:
Meiosis takes place in specialised diploid cells. In plants, microspore mother cell produces 4 microspores/pollen grains while megaspore mother cells produces 4 megaspores/eggs out of which only one remains functional.
BIOXI10: CELL CYCLE AND CELL DIVISION
335957
Which of the following does not hold about meiosis?
1 Four diploid cells are formed at the end of meiosis.
2 It involves the pairing of homologous chromosomes and recombination between them.
3 It involves the two sequential cycle of nuclear and cell division called meiosis I and II but only a single cycle of DNA replication.
4 All of these
Explanation:
When a diploid cell undergoes meiosis, it undergoes two sequential nuclear and cytoplasmic divisions to give rise to four haploid daughter cells.
