What is parthenogenesis? Give two examples from animals.

At what stage of development are the gametes formed in new born male and female?

Correct the following statements
a) Transfer of an ovum collected from donor into the fallopian tube is called ZIFT.
b) Transfering of an embryo with more than 8 blastomeres into uterus is called GIFT.
c) Multiload 375 is a hormone releasing IUD.

Why are sex linked recessive characters more common in the male human beings?

Mention any two ways in which single nucleotide polymorphism (SNPs) identified in human genome can bring revolutionary change in biological and medical science.

Explain how mutations, natural selection and genetic drift affect Hardy Weinberg equilibrium.

List out chemical alarm signals produced during inflammation.

What is biological oxygen demand?

ELISA is a technique based on the principles of antigen-antibody reactions. Can this technique be used in the molecular diagnosis of a genetic disorder such as Phenylketonuria?

What is Pedogenesis?

What are the three levels of biodiversity?

Discuss the causes and effects of global warming. What measures need to be taken to control global warming?

Differentiate Grafting and Layering.

What is back cross?

What is the difference between missense and nonsense mutation?

You are working in a biotechnology lab with a becterium namely E.coli. How will you cut the nucleotide sequence? explain it.

Write the various steps involved in cell suspension culture.

‘Green algae are not likely to be found in the deepest strata of the ocean’. Give at least one reason.

Pyramid of energy is always upright. Give reasons

Give four examples of plants cultivated in commercial agroforestry.

How are microbial innoculants used to increase the soil fertility?

A person got irritation while applying chemical dye. What would be your suggestion for alternative?

Name and explain the type of barriers which involve macrophages.