List of top Biology Questions

Which of the following pairs of gases is mainly responsible for green house effect?

Identify the cells whose secretion protects the lining of gastro-intestinal tract from various enzymes.

Under which of the following conditions will there be no change in the reading frame of following mRNA? 5' AACAGCGGUGCUAUU 3'

Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to:

Select the correctly written scientific name of Mango which was first described by Carolus Linnaeus:

Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:

Match the following structures with their respective location in organs.

LIST I		LIST II
A	Crypts of Lieberkühn	i	Pancreas
B	Glisson's Capsule	ii	Duodenum
C	Islets of Langerhans	iii	Small intestine
D	Brunner's Glands	iv	Liver

Select the correct option from the following:

Which of the following contraceptive methods do involve a role of hormone?

Which of the following factors is responsible for the formation of concentrated urine?

Which of the following sexually transmitted diseases is not completely curable?

In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as:

Persistent nucellus in the seed is known as:

Which of the following statements is correct?

Which of the following is a commercial blood cholesterol lowering agent?

Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid

The shorter and longer arms of a submetacentric chromosome are referred to as:

Following statements describe the characteristics of the enzyme Restriction Endonuclease. Identify the incorrect statement. (1) (2)(3) (4)

Which of the following statements regarding mitochondria is incorrect?

Match Column-I with Column - II.  

LIST I		LIST II
A	Saprophyte	i	Symbiotic association of fungi with plant roots
B	Parasite	ii	Decomposition of dead organic materials
C	Lichens	iii	Living on living plants or animals
D	Mycorrhiza	iv	Symbiotic association of algae and fungi

Choose the correct answer from the options given below:

The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by:

Which of the following is the most important cause for animals and plants being driven to extinction?

Which one of the following is not a method of in situ conservation of biodiversity?

Which of the statements given below is not true about formation of Annual Rings in trees?

The concept of "Omnis cellula-e cellula " regarding cell division was first proposed by:

Match the following organisms with the products they produce:

LIST I		LIST II
A	Lactobacillus	i	Cheese
B	Saccharomyces	ii	Curd cerevisiae
C	Aspergillus niger	iii	Citric Acid
D	Acetobacter aceti	iv	Bread
		v	Acetic Acid

Select the correct option