Explain orthotropous ovule with an example?
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In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: The integument(s), forming its outer layer(s), the nucellus (or remnant of themegasporangium), and the femalegametophyte (formed from a haploidmegaspore) in its center. The female gametophyte — specifically termed amegagametophyte— is also called the embryo sac in angiosperms. The megagametophyte produces an egg cell (or several in some groups) for the purpose of fertilization.
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The correct terms are Orthotropous and Anatropous ovule.
Orthotropous ovules are the ovules that grow straight so that micropyle is at the end opposite the stalk. For example, Piper,Polygonum, Cycas.
Anatropous ovules are the ovules that are completely inverted on its stalk. For example, Helianthus and Tridax.
Orthotropous ovules are the ovules that grow straight so that micropyle is at the end opposite the stalk. For example, Piper,Polygonum, Cycas.
Anatropous ovules are the ovules that are completely inverted on its stalk. For example, Helianthus and Tridax.
Can you explain with the help of diagram?
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