Download ICSE/ISC Biology Sample Papers Class XII (12th) 2008

ICSE Sample Paper - 2008

Subject - Biology

Class – XII

(set-1)

(Three hours)

This question paper consists of two parts PART 1 and PART 2. Part 1 is compulsory and all the questions are to be answered

Part 2 consists of two sections Section A and Section B. Attempt any three questions from Section A and any two questions

from Section B

Part 1 (20 marks)

(Attempt all the questions)

1. a) Define the following [5]

i) Water Potential

ii) Aeroponics

iii) Ganglia

iv) Uricotelism

v) Immunity

b) Expand the following [5]

i) ATP

ii) NADP

iii) RubP

iv)DPT

v) BCG

c) Mention the contributions of the following scientists [5]

i) Went

ii) Fujin

iii) Hill

iv) Blackman

v) Kurasawo

d) Give significant differences between the following [5]

i) Enzyme and Hormone

ii) C 3 and C 4 cycles

iii) Micronutrients and macro-nutrients

iv) Auxins and Gibberlins

v) Tropic and Nastic Movements

Part 2 (50 marks)

Section A

(Attempt any three questions)

2. a) Briefly describe the process of urine formation [4]

b) Briefly describe how carbon dioxide is transported through blood [4]

c) Define i) Phytochrome ii) Micturition [2]

3. a) With the help of a schematic diagram explain dark cycle of photosynthesis [6]

b) Describe Pulmonary and Systemic Circulation [4]

4. a) Briefly describe with the help of a diagram how transmission of nerve impulse takes place [4]

b) Briefly describe the sliding filament theory of muscle contraction [4]

c) State Blackman's Law of Limiting Factor [1]

d) State the pigment present in urine [1]

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