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प्रश्न
Name the scientists who have contributed to the following:
Discovered double fertilization.
उत्तर
Nawaschin (1898)
APPEARS IN
संबंधित प्रश्न
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Name the parts labelled 1, 2, 3, 4 and 5.
Given ahead is a diagrammatic sketch of the sectional view of a germinating pollen grain. Study the same and then answer the question that follows:
Where does the germination of the pollen grain take place and how?
Define fertilization.
Match the following
| I) | External fertilization | i) | pollen grain |
| II) | Androecium | ii) | anther wall |
|
III) |
Male gametophyte | iii) | algae |
| IV) | Primary parietal layer | iv) | stamens |
Male gametes in angiosperms are formed by the division of ______.
In Haplopappus gracilis, number of chromosomes in cells of nucellus is 4. What will be the chromosome number in Primary endosperm cell?
Double fertilization and triple fusion were discovered by ______.
Fusion of one of the male gametes with egg nucleus is referred to as ______.
Ovules fall off after fertilization.
Name the following:
A diploid nucleus in central cell of embryo sac in plants.
