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Photosynthesis Biology - Photosynthesis

ICSE - STD 10 - Biology (ICSE - English Medium). 54 questions in this chapter.

Question types

Photosynthesis question types

54 questions across 4 question groups — pick any mix to generate a Biology paper with step-by-step answer keys.

54
Questions
4
Question groups
5
Question types
Sample Questions

Photosynthesis questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1MCQ1 Mark
In the laboratory experiment, if the temperature was raised to an optimum level, what would be the expected effect on the plant's photosynthetic activity?
  • A
    No change in photosynthetic activity
  • B
    Increase in chlorophyll content
  • ✓
    Increase in enzyme activity
  • D
    Decrease in carbon dioxide levels

Answer: C.

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Q 2MCQ1 Mark
Assertion (A): The mechanism of photosynthesis involves two main stages: the light-dependent reactions and the Calvin cycle.
Reason (R): The light-dependent reactions involve absorption of light energy by chlorophyll.
  • A
    A is True and R is False.
  • B
    A is False and R is True.
  • ✓
    Both A and R are True.
  • D
    Both $A$ and $R$ are False.

Answer: C.

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Q 3MCQ1 Mark
Chlorophyll traps the solar energy of visible light. It absorbs the following lights except
  • A
    Red light
  • ✓
    Green light
  • C
    Violet light
  • D
    Blue light

Answer: B.

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Q 4MCQ1 Mark
The full form of RuDP is
  • ✓
    Ribulose 1, 5-diphosphate
  • B
    Ribose 1, 5-diphosphate
  • C
    Ribulose 1, 3-diphosphate
  • D
    Ribose 1, 6-diphosphate

Answer: A.

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Q 5MCQ1 Mark
Which of the following is incorrect about dark reaction?
  • A
    Reduction of carbon dioxide occurs to form carbohydrate
  • B
    The reaction occurs in stroma region.
  • C
    The reaction is light independent.
  • ✓
    NADPH and ATP are formed during this reaction along with glucose.

Answer: D.

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Q 18[3 marks Question Answer]3 Marks
The diagrams given below is an experiment conducted to study a factor necessary for photosynthesis. Observe the diagrams and then answer the following questions :

Image
(i) What is the aim of the experiment?
(ii) Identify the special condition inside the flask.
(iii) In what manner do the leaves 1 and 2 differ at the end of the starch test?
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