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प्रश्न
Fill in the blanks:
The male whorl, called the ________ produces ________.
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उत्तर
The male whorl, called the androecium produces pollen grains.
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संबंधित प्रश्न
State what is apomixis. Comment on its significance. How can it be commercially used?
The ______ collect the pollen grains.
Fill in the blank:
________takes place when one male gamete and the egg fuse together. The fertilized egg grows into a seed from which the new plants can grow.
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
Match the column.
| Column - I (Structure before seed formation) |
Column - II (Structure after seed formation) |
||
| A. | Funiculus | I. | Hilum |
| B. | Scar of ovule | II. | Tegmen |
| C. | Zygote | III. | Testa |
| D. | Inner integument | IV. | Stalk of seed |
| V. | Embryo | ||
Which of the following is TRUE with respect to cleavage polyembryony?
The polyembryony commonly occurs in ______.
The occurrence of two or more embryos in one ovule is called ______
What is polyembryony and how can it be commercially exploited?
What is pollen grain?
