List of top Biology Questions

The essential chemical components of many coenzymes are

Which one of the following statements is correct ?

Kyoto Protocol was endorsed at

The diagram given here is the standard ECG of a normal person. The P-wave represents the

What is the correct sequence of sperm formation ?

The figure shows a diagrammatic view of human respiratory system with labels A, B, C and D. Select the option which gives correct identification and main function and/or characteristic.

The first stable product of fixation of atmospheric nitrogen in leguminous plants is

DNA fragments generated by the restriction endonucleases in a chemical reaction can be separated by

A phosphoglyceride is always made up of

Artificial insemination means

The Golgi complex plays a major role

Which enzyme/s will be produced in a cell in which there is a nonsense mutation in the lac Y gene ?

The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of

Select the answer which correctly matches the endocrine gland with the hormone it secretes and its function/ deficiency symptom

	Endocrine gland	Hormone	Function/ deficiency symptoms
(1)	Anterior pituitary	Oxytocin	Stimulates uterus contraction during child birth
(2)	Posterior pituitary	Growth Hormone (GH)	Oversecret-ion stimulates abnormal growth
(3)	Thyroid gland	Thyroxine	Lack of iodine in diet results in goitre
(4)	Corpus luteum	Testosterone	Stimulates spermatog- enesis

Which group of animals belong to the same phylum ?

Which of the following criteria does not pertain to facilitated transport ?

A major site for synthesis of lipids is

Which of the following are likely to be present in deep sea water ?

Product of sexual reproduction generally generates

Meiosis takes place in

The complex formed by a pair of synapsed homologous chromosomes is called

What external changes are visible after the last moult of a cockroach nymph ?

Global warming can be controlled by

Monoecious plant of Chara shows occurrence of

Select the wrong statement :