Biology
In a bisexual flower if androcium and gynoecium mature at different time the phenomeon is known as ________

Dichogamy
Haterogamy monogamy
Herpogamy
None of these

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Biology
Which is not a function of the cell membrane?

Keeps materials within the cell separated from the environment outside the cell
Helps control the movement of materials into and out of the cell
Helps substances pass from the cytoplasm into the nucleus
Allows the cell to change shape under pressure

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