Civil Service Aspirants Logo

You are browsing the best resource for TNPSC Group 1 Exam.

for the Aspirants who are preparing for Group 2,2A, Group 4,VAO kindly refer your Syllabus and Prepare with our site.
TUTORIALS LIBRARY
  Previous
Next  

Main Concepts of Life Science

7. 

Consider the statements:
I. Viruses are obligatory endoparasites of living cells.
II. Viruses have genetic material.
III. Viruses can be crystallised.
IV. Viruses do not have mitochondria.
Of these statements:

A. I alone is correct B. I and II are correct C. I,II and III are correct D. All the above

Answer : D. All the above

Justify your answer :  
Name:  
Email ID:  
 

8. 

Which of the following is NOT correctly matched?

A. Auxin - Cell enlargement B. Gibberellin - Amylase synthesis C. Cytokinin - promotes ageing process D. Ethylene - Fruit ripening

Answer : C. Cytokinin - promotes ageing process

Justify your answer :  
Name:  
Email ID:  
 

9. 

The unicellular algae used in space craft to regulate oxygen supply is

A. Chlamydomonas B. Chlorella C. Anabaena D. Spirogyra

Answer : B. Chlorella

Justify your answer :  
Name:  
Email ID:  
 

10. 

which one of the following statements regarding starch and cellulose is NOT correct?

A. Starch and cellulose both are of plant origin B. Starch and cellulose both are polymers. C. Starch and Cellulose both gives blue-black color with Iodine D. Starch and cellulose both are made up of glucose molecules

Answer : C. Starch and Cellulose both gives blue-black color with Iodine

Justify your answer :  
Name:  
Email ID:  
 

11. 

Diffusion means

A. the passage of water molecule from lower concentration to higher concentration B. the movement of molecules from a regoin of greater concentration to lesser concentration C. the movement of molecules from cell to cell D. water molecule movement in a dead cell

Answer : B. the movement of molecules from a regoin of greater concentration to lesser concentration

Justify your answer :  
Name:  
Email ID:  
 

12. 

based on the cellular type the algae chlorella belongs to

A. Autotrophs B. Eukaryotes C. Prokaryotes D. Both A and B

Answer : D. Both A and B

Justify your answer :  
Name:  
Email ID:  
 
  Previous
Next  
TOP