List of top Biology Questions

Excretory organs present in Nematoda are ____ .
In which organ formation of urea takes place?
Which of the following alkaloid is used as Antimalarial drug?
How many chambers are there in a man's heart?
The functional gap present between two neurons is ____ .
Which part of the brain is concern with coughing and sneezing?
Which of the following equations is correctly balanced ?
How much of energy is stored in one ATP molecule?
What is the yellowish straw colored fluid that oozes out after the blood clots?
Doctors use which device to measure blood pressure?
Which of the following hormone levels will cause release of ovum (ovulation) from the graffian топсІе
Which of the following statements about inclusion bodies is incorrect ?
Name the enzyme that facilitates opening of DNA helix during transcription.
Identify the wrong statement with reference to immunity.
Match the following :
aInhibitor of catalytic activityiRicin 
b Possess peptide bonds iiMalonate 
c Cell wall material in fungiiiiChitin 
d Secondary metaboliteivCollagen  
Match LIST I with LIST II

Column I

Column II
AEosinophilsIImmune response
BBasophils IIPhagocytosis
CNeutrophilsIIIRelease histaminase, destructive enzymes 
D LymphocytesIV Release granules containing histamine 
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
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 following columns and select the correct option.
Column I Column II
a6- 15 pairs of gill slits iTrygon
bHeterocercal  caudal finiiCyclostomes 
c Air BladderiiiChondrichthyes
d Poison sting ivOsteichthyes
Match the following columns and select the correct option.
The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are :
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells ?
Montreal protocol was signed in 1987 for control of:
Which of the following statements is correct?
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