MEDIUM
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The food pipe is also known as the oesophagus. 

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Important Questions on Use argument supported by evidence for how the body is a system of interacting subsystems composed of groups of cells.

EASY
Choose the incorrect statements among the following.
A) The female sex organs of Angiosperms are called strobilus.
B) The fusion of motile male gamete with non-motile egg is called zooidogamy.
C) Some algae are in association with animals.
D) Archegonium is flank shaped male sex organ with single cell.