List of top Biology Questions

Select the correct match :

Which of the following is true for nucleolus

Select the incorrect match :

A person may be a haemophilic, only if his mother is a carrier or colourblind. The male parent cannot pass on a sex-linked gene to his son.

Which of the following organisms are known as chief producers in the oceans ?

Which among the following is not a prokaryote ?

Which of the following animals does not undergo metamorphosis ?

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.

The monohybrid genotypic ratio 1 : 2 : 1 in F generation indicates

When pollen grain is shed at 3-celled stage, name the cells it contains.

The technique of bombarding plant cells with high velocity microparticles of gold or tungsten, coated with DNA, is

The microorganisms involved in floe formation during sewage treatment are

ABO blood type in man is an example of 1. Pleiotropy 2. Incomplete dominance 3. Co-dominance 4. Multiple allelism Select the code for the correct answer from the options given below :

The lowest water potential in the xylem will be of:

Human urine contains

Which is function of calcium ?

When was Montreal Protocol signed?

Companion cells are associated with

Citrus canker is caused by

The term "gene" was introduced by:

The infective stage of Entamoeba histolytica is:

Ploidy of endothecium, microspore mother cell, tapetum and microspore is respectively,

The endosperm in gymnosperm is formed after fertilisation. The endosperm of gymnosperm is formed by triple fusion.

Pteridophytes are also called as: