The pistil is the female reproductive part of a flower. It is located at the centre of the flower and consists of a base that is swollen, an ovary that has potential seeds present in it. A stalk is also present which is also known as style and this arises from the ovary. Lastly, there is a stigma that is sticky as it has to collect pollen grains.
During pollination season, the pollen grains land on the surface of the stigma and form a pollen tube during the process of germination. The tube grows and leads down to the style which is responsible for the deposition of sperms and in this way, the ovules present in the ovary are fertilized.
Predation by one flour beetle species on another can be used as
In chapter 14 we have seen how a herbivorous stream insect controls
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Predation is one of the processes by which one organism exploits another
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In his experiments on competition between T. confusum and T.
Discuss how mathematical theory, laboratory models, and field experiments have
Explain the roles of food and predators in producing cycles of abundance
What evidence is there that variation in atmospheric CO 2 concentration is
