(A) The development of fruit without fertilization is known as $Parthenocarpy$. Pollen grains are rich in growth hormones,particularly $Auxins$. When

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(A) The development of fruit without fertilization is known as $Parthenocarpy$. Pollen grains are rich in growth hormones,particularly $Auxins$. When pollen extract is applied to unpollinated carpels,the $Auxin$ present in the extract mimics the effect of natural pollination,thereby stimulating the ovary to develop into a fruit. Therefore,the correct option is $A$.

Class 12 Biology Sexual Reproduction in Flowering Plants Mix Examples-Sexual Reproduction in Flowering Plants

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Pollen extract stimulates the formation of fruit in the unpollinated carpel because the extract contains the following hormone:

A
Auxin
B
Cytokinin
C
Gibberellin
D
Auxin and cytokinin

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Class 12 Questions

Class 12

Biology Questions

Chapter

Sexual Reproduction in Flowering Plants

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Mix Examples-Sexual Reproduction in Flowering Plants

Discuss with your teacher about:
$(i)$ haploid insects and lower plants where cell-division occurs,and
$(ii)$ some haploid cells in higher plants where cell-division does not occur.

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Pollen grains of many species cause severe allergies and bronchial afflictions in some people,often leading to chronic respiratory disorders such as .....

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The chances of hereditary and evolutionary changes are higher in species that reproduce through:

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Members of which plant family,pollen grains maintain viability for months?

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Choose the odd one with respect to the gynoecium.

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Pollen extract stimulates the formation of fruit in the unpollinated carpel because the extract contains the following hormone:

Similar Questions

Discuss with your teacher about:$(i)$ haploid insects and lower plants where cell-division occurs,and$(ii)$ some haploid cells in higher plants where cell-division does not occur.

Pollen grains of many species cause severe allergies and bronchial afflictions in some people,often leading to chronic respiratory disorders such as .....

The chances of hereditary and evolutionary changes are higher in species that reproduce through:

Members of which plant family,pollen grains maintain viability for months?

Choose the odd one with respect to the gynoecium.

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Discuss with your teacher about:
$(i)$ haploid insects and lower plants where cell-division occurs,and
$(ii)$ some haploid cells in higher plants where cell-division does not occur.