Science Biology MCQ-253

General Science-Biology Practice Questions for CDS, NDA, RBI, CivilsPrelims, JPSC, UPSC, SSC, UPPSC Exams



Blood does not coagulate inside the body due to the presence of

 
 
 
 

Leech is an ectoparasite on cattle which is

 
 
 
 

Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

 
 
 
 

Which one of the following animals is devoid of lateral line sense organ?

 
 
 
 

Conglobate gland is a leaf like structure found in

 
 
 
 

Drug which helps to reduce anxiety and brings about calmness is

 
 
 
 

Broad spectrum antibiotics are produced by

 
 
 
 

The pigment that protect plants from harmful effect of ultraviolet rays is

 
 
 
 

Glycogen starch end cellulose are polymers of

 
 
 
 

Kidney can be taken from a dying person who has the

 
 
 
 

Opium is a plant product obtained from

 
 
 
 

What is the distance of ‘distinct vision’ for normal eye

 
 
 
 

Which of the following is not caused aggravated by air pollution?

 
 
 
 

When dust gets into the eye, the part that becomes inflamed and pink is the

 
 
 
 

Haemoglobin is a respiratory pigment present in all chordata except in larvae of

 
 
 
 

Ilium is a part of

 
 
 
 

The pores in leaves through which liquid water oozes out at times are called

 
 
 
 

Some oil-rich seeds can be stored for long periods without any change in their oil content because of the presence of

 
 
 
 

Which one of the following is called the amphibian in plant kingdom?

 
 
 
 

Find the odd one out:

 
 
 
 

The left aortic arch is observed in

 
 
 
 

Ozone affects human health by causing severe pulmonary oedema at a concentration of

 
 
 
 

If a bacterium cell divisions in every 20 minutes, how many bacteria will be formed in two hours?

 
 
 
 

Consider the following kinds of organisms:
1) Bacteria
2) Fungi
3) Flowering plants

Some species of which of the above kinds of organisms are employed as biopesticides?

 
 
 
 

What is the role of ultraviolet (UV) radiation in the water purification systems?

1) It inactivates/kills the harmful microorganisms in water.
2) It removes all the undesirable odours from the water.
3) It quickens the sedimentation of solid particles, removes turbidity and improves the clarity of water.

Which of the statements given above is/are correct?