Class 7 Respiration In Organisms CBSE Questions & Answers

Class 7 · Respiration In Organisms

This is Science Class 7 Respiration in Organisms CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
In insects, air enters the body through
  • A
    Gills
  • B
    Spiracles
    Correct
  • C
    Lungs
  • D
    Skin
2
During exhalation, the ribs move
  • A
    Downwards
    Correct
  • B
    Upwards
  • C
    To normal position
  • D
    Outwards
3
Plants breathe through their stomata located in their
  • A
    Stem
  • B
    Flowers
  • C
    Roots
  • D
    Leaves
    Correct
4
Gills are respiratory organs in
  • A
    Cockroach
  • B
    Earthworm
  • C
    Fish
    Correct
  • D
    Amoeba
5
Breathing is a
  • A
    Biochemical process
  • B
    Chemical process
  • C
    Biological process
  • D
    Physical process
    Correct
6
In anaerobic respiration which chemical substance is produced?
  • A
    Citric acid
  • B
    Alcohol
    Correct
  • C
    Lactic acid
  • D
    Formic acid
7
Blood is red coloured due to presence of
  • A
    Haemoglobin
    Correct
  • B
    Plastids
  • C
    Leucoplast
  • D
    Chloroplast
8
Inhalation is the
  • A
    Release of oxygen
  • B
    Intake of oxygen
    Correct
  • C
    Intake of carbon dioxide
  • D
    Release of carbon dioxide
9
More energy is released in
  • A
    Anaerobic respiration
  • B
    Fermentation
  • C
    Aerobic respiration
    Correct
  • D
    Breathing
10
The opening of the pharynx to larynx is guarded by
  • A
    Adam’s apple
  • B
    Epiglottis
    Correct
  • C
    Alveoli
  • D
    Trachea
11
In plants, exchange of gases takes place through
  • A
    Epidermis
  • B
    Stomata
    Correct
  • C
    Guard cells
  • D
    Accessories cells
12
Oxidation of food inside cell takes place in
  • A
    Chromosome
  • B
    Golgi bodies
  • C
    Ribosome
  • D
    Mitochondria
    Correct
13
Haemoglobin is present in
  • A
    Red blood cells
    Correct
  • B
    White blood cells
  • C
    Platelets
  • D
    Plasma
14
Instant source of energy is
  • A
    Sugar
  • B
    Glucose
    Correct
  • C
    Fat
  • D
    Vitamins
15
Inspiration is the process of
  • A
    Taking in Oxygen rich air
    Correct
  • B
    Taking in \({\text{C}}{{\text{O}}_{\text{2}}}\) rich air
  • C
    Releasing of \({\text{C}}{{\text{O}}_{\text{2}}}\) rich air
  • D
    Release of Oxygen rich air