Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

Mention the two assumptions that led to the HGP.

Mention one significant difference between ontogeny and phylogeny.

Assess the effects of loss of biodiversity in a region. Mention any four such effects.

Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer.
Biogas, Citric acid, Penicillin and curd

Name the enzyme produced by Streptococcus bacterium. Explain its importance in medical sciences.

Why are a fig tree and its partner wasp considered a good example of mutualism?

Who proposed the theory of origin of life? What were the conditions prevailing about 3.6 billion years ago, to create life on primitive earth?

State the most important contribution of the following microbes for human welfare:
a. monascus purpureus
b. Trichoderma Polysporum

Explain the sex of the baby is determined by the father and not by the mother ###In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?

Name the two most commonly employed hosts and the vectors for human gene cloning.