List of top Biology Questions

The solid linear cytoskeletal elements having a diameter of 6 nm and made up of a single type of monomer are known as:

Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to:

An example of ex situ conservation is:

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. What significance is this experiment of?

Select the correct matching of the type of the joint with the example in human skeletal system:

Male gametophyte with least number of cells is present in:

Commonly used vectors for human genome sequencing are:

At which stage of HIV infection does one usually show symptoms of AIDS?

An aggregate fruit is one which develops from:

Which one of the following statements is correct?

Which one of the following is wrongly matched?

Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks.

Which one of the following is a non-reducing carbohydrate?

Match the following and select the correct answer:

(a)	Centriole	(i)	Infoldings in mitochondria
(b)	Chlorophyll	(ii)	Thylakoids
(c)	Cristae	(iii)	Nucleic acids
(d)	Ribozymes	(iv)	Basal body cilia or flagella

A species facing extremely high risk of extinction in the immediate future is called:

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs

Assisted reproductive technology, IVF involves transfer of

Select the correct option describing gonadotropin activity in a normal pregnant female:

The organization which publishes the Red List of species is:

Fructose is absorbed into the blood through mucosa cells of intestine by the process called:

A marine cartilaginous fish that can produce electric current is:

Stimulation of a muscle fibre by a motor neuron occurs at