List of top Biology Questions

Name and describe hormones secreted by ovaries.
Explain unique features of acquired immunity.
Identify A, B, and C from the above diagrams and give their functions.
Explain different steps involved in PCR technique.
Describe mutualism.
Identify and define 'A' and 'B' in relation to uptake of water by the root :
Define the following terms : (a) Gene flow (b) Chromosomal aberrations
Distinguish between human sperm and ovum.
Enlist the uses of gene therapy.
What are the significances of double fertilization?
Explain factors affecting water absorption.
What is differentiation and redifferentiation?
What are the reasons for the success of Mendel?
Arrange the following steps of DNA fingerprinting in correct sequence :

Gel electrophoresis
Isolation of DNA
Southern blotting
Restriction digestion
What is the full form of IAA?
Give the name of microbial source of antibiotic chloromycetin.
How many meiotic divisions are required for the formation of 300 seeds in angiosperm?
Which cells of islets of Langerhans produce a hormone insulin?
Explain the term Emigration.
Give the name of endocrine gland which is prominent at birth but gets gradually atrophied in adult stage.
Identify the appropriate term for the number of births under ideal conditions :
Which one of the following does not evolve further?
Observe the graph and select correct option :
Which of the following is caused by unsterilized needle?
Which of the following types require pollinator but result is genetically similar to autogamy?