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
Haemoglobin carries oxygen molecules as
  • A
    Carboxyhaemoglobin
  • B
    Chloroplast
  • C
    Carboxy-pigement.
  • D
    Oxyhaemoglobin
    Correct
2
Which of the following organism breathe through skin?
  • A
    Cockroach
  • B
    Fish
  • C
    Human
  • D
    Earthworm
    Correct
3
Muscular floor of the chest cavity is called
  • A
    Trachea
  • B
    Rib cage
  • C
    Bronchus
  • D
    Diaphragm
    Correct
4
Voice box is present in
  • A
    Pharynx
  • B
    Epiglottis
  • C
    Larynx
    Correct
  • D
    Mouth
5
Alcohol is obtained by anaerobic fermentation of
  • A
    Minerals
  • B
    Protein
  • C
    Sugar
    Correct
  • D
    Fat
6
Diaphragm is present in
  • A
    Stomach
  • B
    Between chest and abdominal cavity
    Correct
  • C
    Abdominal cavity
  • D
    Chest cavity
7
The minute pores present on the surface of leaves are called
  • A
    Lenticels
  • B
    Guard cells
  • C
    Stomata
    Correct
  • D
    Mesophyll cells
8
The chemical used to test the carbon dioxide gas in exhaled air is
  • A
    Lime stone
  • B
    Lime water
    Correct
  • C
    Lime juice
  • D
    Quick lime
9
Small thin walled balloon like structure that help in exchange of gases are
  • A
    Alveoli
    Correct
  • B
    Arteries
  • C
    Veins
  • D
    Stomata
10
Air tubes in insect is called
  • A
    Air tube
  • B
    Tracheae
    Correct
  • C
    Air bladder
  • D
    Gills
11
Which of the following is considered as biological fuel?
  • A
    Glucose
    Correct
  • B
    Vitamins
  • C
    Water
  • D
    Minerals
12
Snakes breath through
  • A
    Trachea
  • B
    Lungs
    Correct
  • C
    Gills
  • D
    Skin
13
During anaerobic respiration, end product besides carbon dioxide and energy is
  • A
    Acetic acid
  • B
    Water
  • C
    Alcohol
    Correct
  • D
    Lactic acid
14
Stomata are surrounded by
  • A
    Guard cells
    Correct
  • B
    Lenticels
  • C
    Accessories cells
  • D
    Pigmented cells
15
On an average, adult human being during rest breaths ___________ times in a minute.
  • A
    20-25
  • B
    41562
  • C
    70-72
  • D
    15-18
    Correct