List of top Biology Questions

Explain unique features of acquired immunity.
Name and describe hormones secreted by ovaries.
Identify A, B, and C from the above diagrams and give their functions.
Explain different steps involved in PCR technique.
Give the different steps involved in formation of m-RNA from hn-RNA.
What is reproductive isolation? Describe any two types each of pre-mating and post-mating isolating mechanism.
What are the limitations of root pressure theory?
Explain the steps involved in preliminary treatment of sewage.
Distinguish between human sperm and ovum.
What are the significances of double fertilization?
Explain factors affecting water absorption.
Identify and define 'A' and 'B' in relation to uptake of water by the root :
Enlist the uses of gene therapy.
Define the following terms : (a) Gene flow (b) Chromosomal aberrations
What is differentiation and redifferentiation?
Describe mutualism.
How many meiotic divisions are required for the formation of 300 seeds in angiosperm?
What are the reasons for the success of Mendel?
What is the full form of IAA?
Give the name of microbial source of antibiotic chloromycetin.
Give the name of endocrine gland which is prominent at birth but gets gradually atrophied in adult stage.
Arrange the following steps of DNA fingerprinting in correct sequence :

Gel electrophoresis
Isolation of DNA
Southern blotting
Restriction digestion
Which cells of islets of Langerhans produce a hormone insulin?
Explain the term Emigration.
Which of the following types require pollinator but result is genetically similar to autogamy?