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प्रश्न
Differentiate between self-pollination and cross-pollination.
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उत्तर
Self-pollination: This occurs when pollen grains from a flower’s stamens land on the stigma of the same flow.
Cross-pollination: Cross pollination occurs when pollen grains from one flower’s stamens land on the stigma of another blossom.
संबंधित प्रश्न
One of the following occurs in the reproductive system of flowering plants as well as that of humans. This is :
(a) vas deferens
(b) anther
(c) ovary
(d) style
In a bisexual flower, inspite of the young stamens being removed artificially, the flower produces fruit. Explain.
What is a flower ? Draw a neat labelled diagram showing the L.S. of a typical flower.
Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:
Pollen grain, male gamete, female gamete, ovary.
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
What is meant by pollination?
Pollen tube reaches the embryo sac via style.
The ovule of an angiosperm is technically equivalent to ______
Give reason for the following:
Fertilization cannot take place in flowers if pollination does not occur.
Given below is a diagram of a germinating seed. Label the parts that:
- gives rise to future shoot.
- gives rise to future root system.
- stores food.
