Biology NEB 2076 (old course) question paper

Describe in brief on any five.

• a) Significances of respiration.
• b) Describe the tunica and corpus theory.
• c) Structure of RNA.
• d) Mechanism of crossing over.
• e) Application of plant tissue culture.
• f) Process of male gametogenesis.
• g) Describe the co-dominance with suitable example.

Describe the anatomical structure of dicot root and compare it with monocot root.

OR

Describe an experiment to demonstrate light is necessary for the process of photosynthesis with clean diagram.

Answer in short on any seven.

• a) Name the place where actual exchange of gases takes place inside the lung.
• b) What is double circulation?
• c) Which hormone controls osmoregulation?
• d) Define nerve impulse.
• e) What is vaccine? Name their types.
• f) Give limitations of organ transplantation.
• g) What is a fingerprint?
• h) What are pullets?
• i) Why do drug addicts suffer from AIDS?
• j) Hepatitis is more dangerous than AIDS, why?

What is addiction? Discuss the symptoms, effects and control measures of alcohol addiction in detail.