List of top Biology Questions

Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste water into natural surface water, is:

Guttation is the result of :

Pentamerous actinomorphic flowers, bicarpellary ovary with oblique septa, and fruit capsule or berry, are characteristic features of-

Montreal protocol which calls for appropriate action to protect the ozone layer from human activities was passed in the year:

In maize, hybrid vigour is exploited by:

Crop plants grown in monoculture are:

In which of the following fruits is the edible part the aril?

What would be the number of chromosomes in the cells of the aleurone layer in a plant species with 8 chromosomes in its synergids?

Reserve food material of algae is

Antibodies in our body are complex-

Which one of the following is a matching set of a phylum and its three examples?

Restriction endonuclease:

Which of the following statements regarding cilia is not correct?

Maximum absorption of water occurs in:

The causative agent of mad-cow disease is a-

Sertoli cells are regulated by the pituitary hormone known as-

Amino acid sequence, in protein synthesis is decided by the sequence of-

Areolar connective tissue joins-

The thalloid body of a slime mould (Myxomycetes) is known as -

HIV that causes AIDS, first starts destroying

Which one of the following statements is incorrect?

Earthworms are-

One gene-one enzyme hypothesis was postulated by:

Which of the following is an accumulation and release centre of neurohormones ?

In order to obtain virus-free plants through tissue culture the best method is :