331790
After fertilisation, the ovary and ovules, respectively develop into
1 Fruit, seed coat
2 Seed, integuments
3 Seeds and fruit
4 Fruit and seeds
Explanation:
Post fertilisation, ovary develops into a fruit and ovule develops into a seed.
BIOXI03: PLANT KINGDOM
331791
Pollen tube carries
1 Two male gametes
2 One male gamete
3 Pollen grain
4 Male gametophyte
Explanation:
Vegetative cell of pollen grain grows to form the pollen tube. Generative cell undergoes mitotic division to form two male gametes that are carried to the egg cell by the pollen tube.
BIOXI03: PLANT KINGDOM
331792
Assertion : Double fertilization is unique to angiosperms. Reason : Triple fusion occurs in double fertilization.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
S.G. Nawaschin was the first to show that the sperms released by a pollen tube are involved in fertilization, they fertilize two different elements of the embryo sac, the phenomenon is unique to angiosperms and it is called as double fertilization. The nucleus of the one of sperm fuses with the egg nucleus and that of the other migrates to the central product, the secondary nucleus. Most of the plants have two polar nuclei, consequently the second fertilization involves the fusion of 3 nuclei, and the phenomenon is called triple fusion.
BIOXI03: PLANT KINGDOM
331793
The germination of pollen grain results in the formation of
1 Stigma
2 Embryo
3 Pollen tube
4 Zygote
Explanation:
Pollen grain germinates on the stigma of the ovary. The vegetative cell of the pollen grain grows into a pollen tube.
331790
After fertilisation, the ovary and ovules, respectively develop into
1 Fruit, seed coat
2 Seed, integuments
3 Seeds and fruit
4 Fruit and seeds
Explanation:
Post fertilisation, ovary develops into a fruit and ovule develops into a seed.
BIOXI03: PLANT KINGDOM
331791
Pollen tube carries
1 Two male gametes
2 One male gamete
3 Pollen grain
4 Male gametophyte
Explanation:
Vegetative cell of pollen grain grows to form the pollen tube. Generative cell undergoes mitotic division to form two male gametes that are carried to the egg cell by the pollen tube.
BIOXI03: PLANT KINGDOM
331792
Assertion : Double fertilization is unique to angiosperms. Reason : Triple fusion occurs in double fertilization.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
S.G. Nawaschin was the first to show that the sperms released by a pollen tube are involved in fertilization, they fertilize two different elements of the embryo sac, the phenomenon is unique to angiosperms and it is called as double fertilization. The nucleus of the one of sperm fuses with the egg nucleus and that of the other migrates to the central product, the secondary nucleus. Most of the plants have two polar nuclei, consequently the second fertilization involves the fusion of 3 nuclei, and the phenomenon is called triple fusion.
BIOXI03: PLANT KINGDOM
331793
The germination of pollen grain results in the formation of
1 Stigma
2 Embryo
3 Pollen tube
4 Zygote
Explanation:
Pollen grain germinates on the stigma of the ovary. The vegetative cell of the pollen grain grows into a pollen tube.
331790
After fertilisation, the ovary and ovules, respectively develop into
1 Fruit, seed coat
2 Seed, integuments
3 Seeds and fruit
4 Fruit and seeds
Explanation:
Post fertilisation, ovary develops into a fruit and ovule develops into a seed.
BIOXI03: PLANT KINGDOM
331791
Pollen tube carries
1 Two male gametes
2 One male gamete
3 Pollen grain
4 Male gametophyte
Explanation:
Vegetative cell of pollen grain grows to form the pollen tube. Generative cell undergoes mitotic division to form two male gametes that are carried to the egg cell by the pollen tube.
BIOXI03: PLANT KINGDOM
331792
Assertion : Double fertilization is unique to angiosperms. Reason : Triple fusion occurs in double fertilization.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
S.G. Nawaschin was the first to show that the sperms released by a pollen tube are involved in fertilization, they fertilize two different elements of the embryo sac, the phenomenon is unique to angiosperms and it is called as double fertilization. The nucleus of the one of sperm fuses with the egg nucleus and that of the other migrates to the central product, the secondary nucleus. Most of the plants have two polar nuclei, consequently the second fertilization involves the fusion of 3 nuclei, and the phenomenon is called triple fusion.
BIOXI03: PLANT KINGDOM
331793
The germination of pollen grain results in the formation of
1 Stigma
2 Embryo
3 Pollen tube
4 Zygote
Explanation:
Pollen grain germinates on the stigma of the ovary. The vegetative cell of the pollen grain grows into a pollen tube.
331790
After fertilisation, the ovary and ovules, respectively develop into
1 Fruit, seed coat
2 Seed, integuments
3 Seeds and fruit
4 Fruit and seeds
Explanation:
Post fertilisation, ovary develops into a fruit and ovule develops into a seed.
BIOXI03: PLANT KINGDOM
331791
Pollen tube carries
1 Two male gametes
2 One male gamete
3 Pollen grain
4 Male gametophyte
Explanation:
Vegetative cell of pollen grain grows to form the pollen tube. Generative cell undergoes mitotic division to form two male gametes that are carried to the egg cell by the pollen tube.
BIOXI03: PLANT KINGDOM
331792
Assertion : Double fertilization is unique to angiosperms. Reason : Triple fusion occurs in double fertilization.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
S.G. Nawaschin was the first to show that the sperms released by a pollen tube are involved in fertilization, they fertilize two different elements of the embryo sac, the phenomenon is unique to angiosperms and it is called as double fertilization. The nucleus of the one of sperm fuses with the egg nucleus and that of the other migrates to the central product, the secondary nucleus. Most of the plants have two polar nuclei, consequently the second fertilization involves the fusion of 3 nuclei, and the phenomenon is called triple fusion.
BIOXI03: PLANT KINGDOM
331793
The germination of pollen grain results in the formation of
1 Stigma
2 Embryo
3 Pollen tube
4 Zygote
Explanation:
Pollen grain germinates on the stigma of the ovary. The vegetative cell of the pollen grain grows into a pollen tube.
