List of top Biology Questions

Match the following with respect to meiosis:

	Column I		Column II
A	Bt cotton	I	Gene therapy
B	Adenosine	II	Cellular defence deaminase deficiency
C	RNAi	III	Detection of HIV infection
D	PCR	IV	Bacillus thuringiensis

Match the following columns and select the correct option.

Column I		Column II
A	Floating Ribs	I	Located between second and seventh ribs
B	Acromion	II	Head of the Humerus
C	Scapula	III	Clavicle
D	Glenoid cavity	IV	Do not connect with the sternum

Match the following :

a	Inhibitor of catalytic activity	i	Ricin
b	Possess peptide bonds	ii	Malonate
c	Cell wall material in fungi	iii	Chitin
d	Secondary metabolite	iv	Collagen

Identify the correct statement with reference to human digestive system.

In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

Which one of the following is the most abundant protein in the animals ?

Identify the substances having glycosidic bond and peptide bond, respectively in their structure :

The body of the ovule is fused within the funicle at :

Montreal protocol was signed in 1987 for control of:

Which of the following statements is not correct?

Which of the following statements is correct?

Match the trophic levels with their correct species examples in grassland ecosystem.

	Column I		Column II
A	Fourth trophic level	I	Crow
B	Second trophic level	II	Vulture
C	First trophic level	III	Rabbit
D	Third tropical level Third tropical level	IV	Grass

The transverse section of a plant shows following anatomical features: 
(a) Large number of scattered vascular bundles surrounded by bundle sheath. 
(b) Large conspicuous parenchymatous ground tissue. 
(c) Vascular bundles conjoint and closed. 
(d) Phloem parenchyma absent. 
Identify the category of plant and its part

Match the following concerning essential elements and their functions in plants:

a	Iron	i	Photolysis of water
b	Zinc	ii	Pollen germination
c	Boron	iii	Required for chlorophyll biosynthesis
d	Manganese	iv	IAA biosynthesis

Match the following columns and select the correct option.

Column I		Column II
A	Clostridium	I	Cyclosporin-A
B	Trichoderma	II	Butyric Acid
C	Monascus	III	Butyric Acid
D	Aspergillus niger	IV	Blood cholesterol lowering agent

Which of the following hormone levels will cause release of ovum (ovulation) from the graffian топсІе

The sequence that controls the copy number of the linked DNA in the vector, is termed :

Which of the following would help in prevention of diuresis ?

The size of Pleuropneumonia - like Organism (PPLO) is :

Identify the basic amino acid from the following.

The first phase of translation is:

Meiotic division of the secondary oocyte is complete

Identify the wrong statement with reference to immunity.

Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells ?