Term - II Questions

Q1 Describe the specific adaptations of xerophytes with respect to root system, stem and leaves.

Q2 Name and explain the kind of interaction in the following: 

(i) Algae and fungi in lichens

(ii) Head louse and humans.

(iii) Hermit crab and sea anemone.

Q3 How does mutualism differ from commensalism? Give one example of each.

Q4 Why is the gene encoding for 'Cry' protein inserted into a crop plant?

Q5 (i) Give the scientific name of the soil bacterium.

(ii) How are these proteins useful in agriculture?

(iii) What do the differently written terms 'Cry' and cry represent respectively?

Q6 Write an account on the production of human insulin in transgenic organisms. 

Q7.  How has the European Federation of Biotechnology defined biotechnology?

Q8 What is 'on'?

Q9 How do biofertilisers enrich the fertility of the soil?

Q10 Name some traditional Indian foods made of wheat, rice and Bengal gram (or their production) which involve use of microbes.

Q11 How do B-cells of the immune system respond to antigens?

Q12 What are allergens? How do they cause inflammatory response inside the human body?

Q 13