Paper : CBSE Class 12th Biology Exam Paper, 2004 (Compartment Delhi: Set - 2)

SECNON - A

Q. 1. If, for any reason, the release of ADH in inhibited , how will this affect the volume of urine produced? 1

Q. 3. Name the hormone that controls apical dominance in plants. 1

Q. 5. Mention any two functions of hydrochloric acid in gastric juice. 1

SECTION - B

Q. 9. What is transpiration? Mention any two ways in which transpiration serves a useful purpose in the plants. 2

Q. 12. Differentiate between proximate (macro-nutrients) and protective (micro-nutrients) principles of food. 2

Q. 14. What is meant by vital capacity? List any two categories of people who possess higher vital capacity. 2

SECTION - C

Q. 25. What is meant by allopolyploid? Briefly describe the steps involved in the development of the new crop Triticale. 3

Q. 26. What is a synapse? How is the nerve Impulse transmitted across a chemical synapse? 5