Inhibition of Succinic dehydrogenase enzyme by malonate is a classical example of

Match List I with List II :

List I	List II
A. Progestasert	I. Barrier made of rubber used by females
B. Multiload 375	II. Oral contraceptive
C. Diaphragm	III. Hormone releasing IUD
D. Saheli	IV. Copper releasing IUD

Choose the correct answer from the options given below :

Select the correct statement.

A biologist studied the population of rats in a barn. He found that the average natality was \(250\), average mortality \(240\), immigration \(20\) and emigration \(30\). The net increase in population is

Osteoporosis, an age­related disease of skeletal system, may occur due to

Epiphytes that are growing on a mango branch is an example of which of the following?

Natural selection where more individuals acquire specific character value other than the mean character value, leads to:

Which one of the following is the site for active ribosomal RNA synthesis ?

The foetal ejection reflex in humans triggers the release of

Which of the following statements are correct with reference to a transcription unit ?
A. A transcription unit in DNA is defined primarily by three regions : promoter, structural gene and terminator.
B. The promoter is said to be located towards the \(5^{\prime}\)-end of the structural gene.
C. The promoter is a DNA sequence that provides binding site for RNA polymerase.
D. The promoter defines the template and coding strands.
E. The terminator is located towards the \(3^{\prime}\)-end of the coding strand and it defines the end of the process of transcription.
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Exploration of molecular, genetic and species level diversity for novel products of economic importance is known as

Which of the following hormones is produced under the conditions of stress which stimulate glycogenolysis in the liver of human beings?

The correct increasing order of trans-effect of the following species is