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Biology XII

Date of submission: 5 June 2015

1.Selection of Topic & collection of data for Investigatory project in Biology

2.Read the first Four chapters in biology.

3.Write Biology record as per instruction.

4.Draw and label the following diagrams.

-L.S of Ovule

– L.S of Anther

-Embryo sac

-Microsporogenseis

-Megasporogenesis

5. Answer the following

a) Megaspore development is monosporic .Explain .

b) Compare Tapetum &Nucellus

c) What are hermaphrodites ?.Give two examples.

d)Nature prefers sexual reproduction .Why?

e)Mention three adaptations to prevent autogamy.


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