sex cells: Male gamete=sperm, Female gamete=egg
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Responses
angiosperm
angiosperm
gamete
gamete
zygote
zygote
stigma
stigma
Stigma is not a sex cell. It is a part of the female reproductive system in plants. The stigma is the sticky portion of the pistil, where pollen is deposited during pollination.
The term "stigma" refers to a part of a flower. To understand its relevance to sex cells, it is important to understand the process of fertilization in plants.
In angiosperms, which are flowering plants, the male gamete is the sperm, and the female gamete is the egg. The sperm is produced in the pollen grains located in the anthers of the flower, while the eggs are produced in the ovules located in the ovary of the flower.
During the process of pollination, pollen grains are transferred from the anthers to the stigma of a flower. The stigma is the sticky, receptive surface at the top of the female reproductive part of the flower called the pistil. It is here that the pollen grains land and attach.
If the conditions are favorable, a pollen tube grows from the stigma, down through the style, and into the ovary where the eggs are located. This process is called fertilization. The sperm in the pollen tube fuses with the egg inside the ovary, resulting in the formation of a zygote. The zygote then develops into an embryo, which eventually grows into a new plant.
So, the stigma plays a crucial role in the process of plant sexual reproduction by receiving the pollen grains, which contain the male gametes (sperm), and facilitating the fertilization of the female gametes (eggs) present in the ovary.