What is the insertion of the anther in the sunflower? based on the text.

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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What is the insertion of the anther in the sunflower? based on the text. 

The anther is described as sessile when the filament is wanting. According to attachment the
anther is adnate when attached by its base and versatile when attached by a point near the middle. As
to its position, the anther is introrse when it faces inward and extrorse when it faces outward. Usually,
the anther has two cells, but in some the number may be 1, 3 or 4. The pollen in the cells are allowed
to escape when the cells open by longitudinal slits, by valves, or by pores. As stated above,
rudimentary, imperfect or sterile stamens are called staminodes.
Transcribed Image Text:The anther is described as sessile when the filament is wanting. According to attachment the anther is adnate when attached by its base and versatile when attached by a point near the middle. As to its position, the anther is introrse when it faces inward and extrorse when it faces outward. Usually, the anther has two cells, but in some the number may be 1, 3 or 4. The pollen in the cells are allowed to escape when the cells open by longitudinal slits, by valves, or by pores. As stated above, rudimentary, imperfect or sterile stamens are called staminodes.
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