Biology, asked by Sara2658, 10 months ago

Role of pollinators in cross pollinated plants

Answers

Answered by shaikhaa9572
0

The angiosperms—flowering plants that produce seeds often enclosed within an edible fruit—are among the planet’s most successful life forms. More than 250,000 species of flowering plants have been described, and an equivalent number could await discovery (Davies et al., 2004). At the base of most terrestrial and many aquatic food webs, the angiosperms are the principal providers of nutrients and resources to most other organisms, and they provide multidimensional structure for the majority of terrestrial and freshwater ecosystems. Humans derive food, fiber, drugs, and fuel, either directly or indirectly from angiosperms. Moreover, angiosperms have enhanced aesthetic, recreational, and cultural pursuits since before recorded history.  Reproductive systems of angiosperms vary greatly among species (Box 1-1), but two processes are necessary for sexual reproduction in all angiosperms: pollination—the transfer of pollen from the anthers of a stamen to the stigma of a pistil—and fertilization—the fusion of the sperm nuclei from pollen with the egg nucleus in the ovary to produce an embryo. Some plants self-pollinate, that is, pollen transfer occurs within the same flower or among the flowers on a single plant, usually because the anthers touch the adjacent stigma. The majority of flowering plants, however, depend on the transfer of pollen from other individuals (cross-pollination).  Although some species rely on abiotic forces, including wind and water, for pollen transfer, more than three-fourths of the planet’s angiosperms rely on over 200,000 species of animal pollinators to various extents to meet their reproductive needs. Fossil records show that angiosperms underwent a remarkable diversification between 130 million and 90 million years ago

Answered by Anonymous
2

Kisi botany expert se poocho naa 4 example me...(just kidding xD)

Pollinators help in transfer of pollen grains from the anther of one plant to the stigma of another plant.

Yrr mene toh galti se teri help kardi, sorry✌️✌️✌️

Similar questions
Math, 5 months ago