List of top Biology Questions

After karyogamy followed by meiosis, spores are produced exogenously in

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other ?

Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called

The adsorption of water by hydrophilic compounds like cellulose and pectin in root hair cell wall is called _______.

Calcium is important in skeletal muscle contraction because it

Which of the following is an occupational respiratory disorder ?

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Fibrinogen	i.	Osmotic balance
b.	Globulin	ii.	Blood clotting
c.	Albumin	iii.	Defence mechanism

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.

Ciliates differ from all other protozoans in

Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as

According to Hugo de Vries, the mechanism of evolution is

A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Proliferative Phase	i.	Breakdown of endometrial lining
b.	Secretory Phase	ii	Follicular Phase
c.	Menstruation	iii.	Luteal Phase

All of the following are part of an operon except

AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ?

Which of the following gastric cells indirectly help in erythropoiesis ?

Which of these statements is incorrect ?

Nissl bodies are mainly composed of

Which of the following terms describe human dentition ?

Match the items given in Column I with those in Column II and select the correct option given below :

Column I (Function)		Column II (Part of Excretory System)
a.	Ultrafiltration	i.	Henle’s loop
b.	Concentration of urine	ii	Ureter
c.	Transport of urine	iii.	Urinary bladder
d.	Storage of urine	iv.	Malpighian corpuscle
		v.	Proximal convoluted tubule

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Glycosuria	i.	Accumulation of uric acid in joints
b.	Gout	ii	Mass of crystallised salts within the kidney
c.	Renal calculi	iii.	Inflammation in glomerul
d.	Glomerular nephritis	iv.	Presence of glucose in urine

Which of the following events does not occur in rough endoplasmic reticulum ?

The contraceptive ‘SAHELI'

Match the items given in Column I with those in Column II and select the correct option given below :

Column I		Column II
a.	Tricuspid valve	i.	Between left atrium and left ventricle
b.	Bicuspid valve	ii	Between right ventricle and pulmonary artery
c.	Semilunar valve	iii.	Between right atrium and right ventricle