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Biology MCQ

Photosynthesis · ICSE STD 10 (ICSE - English Medium). 12 questions.

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12 questions · timed · auto-graded

MCQ 11 Mark
Compensation point means the condition:
  • A
    When the entire food manufactured in photosynthesis remains unutilised
  • B
    When the pot is watered just to meet the full requirement of the plant
  • ✓
    When rate of photosynthesis is equal to rate of respiration
  • D
    Where there is neither photosynthesis nor respiration.
Answer
Correct option: C.
When rate of photosynthesis is equal to rate of respiration
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MCQ 21 Mark
The main difference between chlorophyll ' $a$ ' and ' $b$ ' is:
  • A
    Chlorophyll ‘a’ is a linear chain compound and ‘b’ is branched chain
  • B
    Chlorophyll ‘a’ has no Mg ion in centre of molecule
  • ✓
    In chlorophyll 'a' there is $CH_3$ group whereas in 'b' it is CHO group 
  • D
    All of the above
Answer
Correct option: C.
In chlorophyll 'a' there is $CH_3$ group whereas in 'b' it is CHO group 
In chlorophyll 'a' there is $CH_3$ group whereas in 'b' it is CHO group 
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MCQ 31 Mark
A plant is kept in a dark cupboard for about $48$ hours before conducting any experiment on photosynthesis to:
  • A
    Remove starch from the plant
  • ✓
    Ensure that starch is not translocated from the leaves
  • C
    Remove chlorophyll from the leaf of the plant
  • D
    Remove starch from the experimental leaf
Answer
Correct option: B.
Ensure that starch is not translocated from the leaves
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MCQ 41 Mark
$\ce{NADP}$ is expanded as
  • A
    Nicotinamide, adenosine dinucleotide phosphate
  • ✓
    Nicotinamide, adenine dinucleotide phosphate
  • C
    Nicotinamide, adenine dinucleous phosphate
  • D
    Nicotinamide, adenosine dinudeous phosphate
Answer
Correct option: B.
Nicotinamide, adenine dinucleotide phosphate
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MCQ 51 Mark
Which would do maximum harm to a tree?
  • A
    Loss of half of its branches
  • B
    Loss of half of its flowers
  • ✓
    Loss of all of its leaves
  • D
    Loss of a little bark
Answer
Correct option: C.
Loss of all of its leaves
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MCQ 61 Mark
A cell that lacks chloroplast does not _________ .
  • A
    Evolve $\mathrm{CO}_2$
  • ✓
    liberate $\mathrm{O}_2$
  • C
    Require water
  • D
    utilize carbohydrates
Answer
Correct option: B.
liberate $\mathrm{O}_2$
A cell that lacks chloroplast does not liberate $\mathrm{O}_2$
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MCQ 71 Mark
Which one of the following would not be a limiting factor for photosynthesis?
  • ✓
    Oxygen
  • B
    Light
  • C
    Carbon dioxide
  • D
    Chlorophyll
Answer
Correct option: A.
Oxygen
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MCQ 81 Mark
Chlorophyll is present
  • ✓
    In the grana of chloroplast
  • B
    On the surface of chloroplast
  • C
    Dispersed throughout the chloroplast
  • D
    In the stroma of chloroplast
Answer
Correct option: A.
In the grana of chloroplast
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MCQ 91 Mark
Choose the Odd One Out
  • A
    Light intensity
  • B
    Water content
  • C
    Temperature
  • ✓
    Chlorophyll
Answer
Correct option: D.
Chlorophyll
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