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प्रश्न
Why are some seeds referred to as apomictic seeds?
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उत्तर
The seeds produced without fertilisation are called apomictic seeds.
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संबंधित प्रश्न
Fill in the blanks:
The male whorl, called the ________ produces ________.
Fill in the blank:
The ________contains the egg or ovum.
Once the pollen reaches the stigma, the pollen tube traverses down the ________ to the ovary where fertilization occurs.
Fill in the blank:
The whorl ________is green that protects the flower until it opens.
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 | ||
Give an account of polyembryony.
What is pollen grain?
Who proposed the Recessive Gene Theory and in what year?
Who first observed polyembryony, in which plant species, and in which year?
Which of the following is NOT a type of polyembryony in the four-type classification system?
