FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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petiole
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sepal
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stigma
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embryo sac
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Detailed explanation-1: -The female gametophyte (FG), called the embryo sac, produces the female gametes and usually is obscured within the maternal, sporophytic ovule ( Figure 1). Fusion of male and female gametes occurs during double fertilization, after the sperm cells are delivered to the embryo sac by the pollen tube.
Detailed explanation-2: -In angiosperms, the megagametophyte (female or egg-producing gametophyte) is also called an embryo sac. The embryo sac develops within an ovule, which is contained within the ovary of a flower. In most angiosperms, the mature embryo sac is a seven-celled, eight-nucleate structure.
Detailed explanation-3: -Classification of embryo Sac: Based on the number of megaspores, embryo sacs can be divided into three types: Monosporic. Bisporic. tetrasporic.