List of top Biology Questions

Explain factors affecting water absorption.
Select and rewrite appropriate disorder of respiratory system with the given symptoms : [ sinusitis, emphysema, silicosis and asbestosis, laryngitis ]
Explain the term Emigration.
Give the name of microbial source of antibiotic chloromycetin.
Expand the term ZIFT.
Give the name of endocrine gland which is prominent at birth but gets gradually atrophied in adult stage.
How many meiotic divisions are required for the formation of 300 seeds in angiosperm?
Which cells of islets of Langerhans produce a hormone insulin?
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?
Which one of the following does not evolve further?
What are vestigeal organs?
Recognition sequence of restriction enzymes are generally ______________ nucleotides long.
Which of the following types require pollinator but result is genetically similar to autogamy?
Identify the appropriate term for the number of births under ideal conditions :
Observe the graph and select correct option :
Which of the following is caused by unsterilized needle?
In absence of fertilization, corpus luteum degenerates into ____________.
Identify the growth hormone in plants which causes inhibitory effect.
Which one of the following is not a part of lac operon?
Which of the following divides nasal cavity?
(A) Comment upon the mode of pollination in Vallisneria and Zostera. (B)
How does the process of Natural Selection affect Hardy-Weinberg equilibrium? Explain with the help of graphs.
Which organelle is primarily responsible for producing ATP in a cell?