Student Corner

1. Hay fever is an allergic reaction to the presence of the following in the air:

A. Dust      

B. Smoke

C. Pollen    

D. Moisture

2. The behavioural pattern of which one of the following organisms may upset when DOT is used as pesticide?

A. Earthworm      

B. Snake

C. Fish       

D. Frog

3. What causes the 'mad-cow disease' (Jakob-Creutzfeldt disease)?

A. Bacterium       

B. Virus

C. Viroid

D. Prion

4. What is another name of Vitamin K? 

A. Nicotinic acid

B. Riboflavin

C. Thiamine

D. 2 Methyl-1, 4-naphthoquinone

5. Which of the following hormone controlled the blood pressure? 

A. Vasopressin     

B. Oxytocin

C. Estrogens        

D. Testosterone

6. Brain and the spinal cord are invested by membranes called: 

A. Arachnoids        

B. Pleural membrane

C. Meninges        

D. None of these

7. Which one of the following organisms has a role in converting nitrates to free nitrogen?

A. Pseudomonas

B. Nitrosomonas

C. Nitrobacter      

D. Rhizobium

8. Consider the following with reference to human nutrition:

1. Vitamin A        

2. Vitamin B2

3. Vitamin E

For which of these are green leafy vegetables rich sources?

A. 1 and 2  

B. 2 only

C. 1 and 3  

D. 1,2 and 3

9. Select correct match of the Biological theories or laws and Scientists.

A. Laws of Inheritance                      - Lamarck

B. Theories of Organic Evolution       - Darwin                         

C. Theories of Natural Selection        - Mendel                        

D. Germplasm Theory                        - Weismann

10.  Which one of the following is the richest source of vitamin C?

A. Guava    

B. Pineapple

C. Orange  

D. Tomato