Short answer questions III — task. Science State Board, Class 10.

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1. How does developing embryo gets its nourishment inside the mother’s body?

i. The placenta is a disc-shaped structure that attaches the uterine wall and the developing embryo.

ii. The placenta allows the exchange of food materials only.

iii. The placenta is connected to the embryo through the umbilical cord.

iv. The umbilical cord helps in the transport of substances to and from the embryo.

2. Identify the parts \(A\), \(B\), \(C\) and \(D\).

\(A\) - Exine, \(B\) - Intine, \(C\) - Vegetative nucleus, \(D\) - Generative cell
\(A\) - Intine, \(B\) - Exine, \(C\) - Generative cell, \(D\) - Vegetative nucleus
\(A\) - Exine, \(B\) - Intine, \(C\) - Generative cell, \(D\) - Vegetative nucleus
\(A\) - Intine, \(B\) - Exine, \(C\) - Vegetative nucleus, \(D\) - Generative cell

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14. Short answer questions III