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The pollen needs to be transferred from the stamen to the stigma. If this transfer of pollen occurs in the same flower, this phenomenon is known as:
spore formation
self-pollination
cross-pollination
fertilisation
self-pollination
The phenomenon where pollen grains are transferred from the anther of a stamen to the stigma of the same flower is called self-pollination. This is a common method of reproduction in bisexual flowers.
The phenomenon where pollen grains are transferred from the anther of a stamen to the stigma of the same flower is called self-pollination. This is a common method of reproduction in bisexual flowers.
Think of self-pollination as a 'home delivery' system where a plant delivers its own genetic material directly within its own house, rather than relying on an external source.
SELF: Same-flower, Easy, Limited-variation, Fast.
Pollination is the physical transfer of pollen grains from the male reproductive organ (stamen) to the female reproductive organ (stigma). When this occurs within the same flower, or between flowers on the same plant, it is known as self-pollination. This process is essential for fertilisation in angiosperms.
Self-pollination occurs in bisexual flowers.
It does not require external agents like insects or wind as much as cross-pollination.
It ensures the persistence of pure traits in a population.
Genetic variation is generally lower in self-pollinating plants compared to cross-pollinating ones.
High chances of pollination success.
Conserves energy as less pollen production is needed.
Reduces genetic diversity in the offspring.
Can lead to the expression of harmful recessive traits.
Wheat crops
Pea plants (Pisum sativum)
| Feature | Self-pollination | Cross-pollination |
|---|---|---|
Transfer location | Within the same flower | Between different flowers |
Fertilisation is the subsequent process where the male and female gametes fuse.
Spore formation is a type of asexual reproduction seen in fungi like Rhizopus, which is distinct from pollination.
B is correct тАФ The transfer of pollen from the stamen to the stigma of the same flower is defined as self-pollination.
Remember: 'Self' means same flower, 'Cross' means different flowers (often same species), and 'Fertilisation' is the fusion event that happens AFTER successful pollination.
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