Ecosystems — BIOLOGY STD 12 Science — Question

What are autosomes?

Which part in the male reproductive system stores sperms?

Write the names of two technical methods by which the symptoms of bacterial or viral infected diseases are identified before they appear on the body.

Name the layer of cells forming the outerwall of blastocyet.

When does DNA replicate in the cell cycle?

Which region in India has the maximum number of amphibian species?

Mention the pollinating agent of an inflorescence of small dull coloured flowers with well exposed stamens and large feathery stigma. Give any one characteristic of pollen grains produced by such flowers.

How does smoking tobacco in human lead to oxygen deficiency in their body?

How is a mule produced?

Name any two organisms which occupy more than one trophic level in an ecosystem?