List of top Biology Questions

Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ? (1) Uremia and Ketonuria (2) Uremia and Renal Calculi (3) Ketonuria and Glycosuria (4) Renal calculi and Hyperglycaemia

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

In light reaction, plastoquinone facilitates the transfer of electrons from:

Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their :

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

The enzyme enterokinase helps in conversion of:

Which of the following is put into Anaerobic sludge digester for further sewage treatment?

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

Select the correct statement.

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 ?

Match the following columns and select the correct option.

LIST I Mineral		LIST II  States
A	Placenta	I	Androgens
B	Zona pellucida	II	Human Chorionic Gonadotropin (hCG)
C	Bulbo-urethral	III	Layer of the ovum glands
D	Leydig cells	IV	Lubrication of the Penis

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

The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are :

If the distance between two consecutive base pairs is 0.34nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is $6.6 \times 10^9$ bp, then the length of the DNA is approximately:

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

Select the correct events that occur during inspiration.
(a) Contraction of diaphragm 
(b) Contraction of external inter - costal muscles 
(c) Pulmonary volume decreases 
(d) Intra pulmonary pressure increases

The QRS complex in a standard ECG represents :

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

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

The first phase of translation is:

Meiotic division of the secondary oocyte is complete

Montreal protocol was signed in 1987 for control of:

Match the following columns and select the correct option.

	Column I		Column II
a	6- 15 pairs of gill slits	i	Trygon
b	Heterocercal  caudal fin	ii	Cyclostomes
c	Air Bladder	iii	Chondrichthyes
d	Poison sting	iv	Osteichthyes