List of top Biology Questions

Describe physiological effect and applications of gaseous hormone in plants.
Distinguish between hyperthyroidism and hypothyroidism.
With the help of a neat, labelled diagram describe the structure of root hair.

Complete the following flow diagram of double circulation:

Give the adaptations shown by desert animals.
Explain natural selection with example of industrial melanism.
Define the following: (a) Gravitational water, (b) Hygroscopic water, (c) Combined water, (d) Capillary water
A person met with a small accident and bleeds, but very soon stops bleeding. Explain the physiological process responsible for this.
Write the aims of human genome project.
What are the effects of biotechnology with relation to human health?
Give different properties of water.
Enlist the characteristics of Neanderthal Man.
Abscissic acid is the common name given to two identical substances isolated separately. Name them. Give the chemical features of abscissic acid.
Name the plant disease caused by Agrobacterium tumefaciens.
Identify the trophoblast cells which are in contact with embryonal knob during blastulation.

Identify A, B, C, D, in the given diagram of human reproductive system:

Name the cell which is responsible for nitrogen fixation in cyanobacteria.
Identify chromosomal disorder caused due to non-disjunction of 21st number of chromosome and enlist its symptoms.
How many Biodiversity hotspots have been identified around the world?
What do you mean by Pioneer species?
Cellular factors in innate immunity is provided by ______.
Which is the primary precursor of IAA in plants?
______ layer is in close contact of CNS in human being.
While playing cricket Raju faces problem of severe pain and heaviness in the chest. Pain spreads from neck, lower jaw, left arm and to left shoulder. From above symptoms identify disease ______.
Annealing step of PCR, operates at ______°C.