List of top Biology Questions

What are the significances of double fertilization?
Describe mutualism.
What is differentiation and redifferentiation?
Explain factors affecting water absorption.
Identify and define 'A' and 'B' in relation to uptake of water by the root :
Distinguish between human sperm and ovum.
Define the following terms : (a) Gene flow (b) Chromosomal aberrations
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?
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
Explain the term Emigration.
Which cells of islets of Langerhans produce a hormone insulin?
Give the name of endocrine gland which is prominent at birth but gets gradually atrophied in adult stage.
Which of the following is caused by unsterilized needle?
Observe the graph and select correct option :
Identify the appropriate term for the number of births under ideal conditions :
Which of the following types require pollinator but result is genetically similar to autogamy?
Which one of the following does not evolve further?
Recognition sequence of restriction enzymes are generally ______________ nucleotides long.
Identify the growth hormone in plants which causes inhibitory effect.
Which of the following divides nasal cavity?

The normal pH of arterial blood is:

Which enzyme is deficient in Gaucher’s disease?