341495
Spirogyra is a sexually reproducing algae in which vegetative thallus is haploid in spirogyra meiosis
1 Never occurs
2 Occurs at time of gamete production
3 Occurs after fertilization
4 Occurs during vegetative growth
Explanation:
In haploid organisms like Spirogyra, haploid gametes are produced by mitosis and the meiosis occurs in the zygote and produces haploid organisms. The zygote is the product of fertilization and hence, meiosis occurs after fertilization.
BIOXII01: REPRODUCTION IN ORGANISMS
341496
Statement A : Thallus of algae and fungi having either male or female reproductive structures are called heterothallic plants. Statement B : Bisexual animals are the animals in which both male and female reproductive organs are present in the same individuals
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Only statement \(A\) is correct.
BIOXII01: REPRODUCTION IN ORGANISMS
341497
Monoecious plant of Chara shows occurrence of
1 Stamen and carpel on the same plant
2 Upper oogonium and lower antheridium on the same plant
3 Upper antheridium and lower oogonium on the same plant
4 Antheridiophore and archegoniophore on the same plant
Explanation:
Monoecious or homothallic condition in Chara (green algae) is used to denote upper oogonium and lower antheridium on the same plant.
BIOXII01: REPRODUCTION IN ORGANISMS
341498
Assertion : Organisms exhibiting external fertilization show great synchrony between the sexes. Reason : They release a large number of gametes into the surrounding medium (water).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are correct and \(R\) is not the correct explanation of \(A\).
341495
Spirogyra is a sexually reproducing algae in which vegetative thallus is haploid in spirogyra meiosis
1 Never occurs
2 Occurs at time of gamete production
3 Occurs after fertilization
4 Occurs during vegetative growth
Explanation:
In haploid organisms like Spirogyra, haploid gametes are produced by mitosis and the meiosis occurs in the zygote and produces haploid organisms. The zygote is the product of fertilization and hence, meiosis occurs after fertilization.
BIOXII01: REPRODUCTION IN ORGANISMS
341496
Statement A : Thallus of algae and fungi having either male or female reproductive structures are called heterothallic plants. Statement B : Bisexual animals are the animals in which both male and female reproductive organs are present in the same individuals
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Only statement \(A\) is correct.
BIOXII01: REPRODUCTION IN ORGANISMS
341497
Monoecious plant of Chara shows occurrence of
1 Stamen and carpel on the same plant
2 Upper oogonium and lower antheridium on the same plant
3 Upper antheridium and lower oogonium on the same plant
4 Antheridiophore and archegoniophore on the same plant
Explanation:
Monoecious or homothallic condition in Chara (green algae) is used to denote upper oogonium and lower antheridium on the same plant.
BIOXII01: REPRODUCTION IN ORGANISMS
341498
Assertion : Organisms exhibiting external fertilization show great synchrony between the sexes. Reason : They release a large number of gametes into the surrounding medium (water).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are correct and \(R\) is not the correct explanation of \(A\).
341495
Spirogyra is a sexually reproducing algae in which vegetative thallus is haploid in spirogyra meiosis
1 Never occurs
2 Occurs at time of gamete production
3 Occurs after fertilization
4 Occurs during vegetative growth
Explanation:
In haploid organisms like Spirogyra, haploid gametes are produced by mitosis and the meiosis occurs in the zygote and produces haploid organisms. The zygote is the product of fertilization and hence, meiosis occurs after fertilization.
BIOXII01: REPRODUCTION IN ORGANISMS
341496
Statement A : Thallus of algae and fungi having either male or female reproductive structures are called heterothallic plants. Statement B : Bisexual animals are the animals in which both male and female reproductive organs are present in the same individuals
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Only statement \(A\) is correct.
BIOXII01: REPRODUCTION IN ORGANISMS
341497
Monoecious plant of Chara shows occurrence of
1 Stamen and carpel on the same plant
2 Upper oogonium and lower antheridium on the same plant
3 Upper antheridium and lower oogonium on the same plant
4 Antheridiophore and archegoniophore on the same plant
Explanation:
Monoecious or homothallic condition in Chara (green algae) is used to denote upper oogonium and lower antheridium on the same plant.
BIOXII01: REPRODUCTION IN ORGANISMS
341498
Assertion : Organisms exhibiting external fertilization show great synchrony between the sexes. Reason : They release a large number of gametes into the surrounding medium (water).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are correct and \(R\) is not the correct explanation of \(A\).
341495
Spirogyra is a sexually reproducing algae in which vegetative thallus is haploid in spirogyra meiosis
1 Never occurs
2 Occurs at time of gamete production
3 Occurs after fertilization
4 Occurs during vegetative growth
Explanation:
In haploid organisms like Spirogyra, haploid gametes are produced by mitosis and the meiosis occurs in the zygote and produces haploid organisms. The zygote is the product of fertilization and hence, meiosis occurs after fertilization.
BIOXII01: REPRODUCTION IN ORGANISMS
341496
Statement A : Thallus of algae and fungi having either male or female reproductive structures are called heterothallic plants. Statement B : Bisexual animals are the animals in which both male and female reproductive organs are present in the same individuals
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Only statement \(A\) is correct.
BIOXII01: REPRODUCTION IN ORGANISMS
341497
Monoecious plant of Chara shows occurrence of
1 Stamen and carpel on the same plant
2 Upper oogonium and lower antheridium on the same plant
3 Upper antheridium and lower oogonium on the same plant
4 Antheridiophore and archegoniophore on the same plant
Explanation:
Monoecious or homothallic condition in Chara (green algae) is used to denote upper oogonium and lower antheridium on the same plant.
BIOXII01: REPRODUCTION IN ORGANISMS
341498
Assertion : Organisms exhibiting external fertilization show great synchrony between the sexes. Reason : They release a large number of gametes into the surrounding medium (water).
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are correct and \(R\) is not the correct explanation of \(A\).
