Class 10 Life Processes CBSE Questions & Answers

Class 10 · Life Processes

This is online test 01 for CBSE class 10 Science Life Processes.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
The biological process that occur continuously in our body is
  • A
    Respiration
    Correct
  • B
    sweating
  • C
    excretion
  • D
    Digestion
2
What is the mode of nutrition in fungi?
  • A
    parasitic
  • B
    saprophytic
    Correct
  • C
    Autotrophic
  • D
    Heterotrophic
3
Name the tissue in a leaf where plastids are present
  • A
    Mitochondria
  • B
    Mesophyll
    Correct
  • C
    Epithelial cell
  • D
    Endodermis
4
Where does the oxygen liberated during photosynthesis come from?
  • A
    \({\rm{C}}{{\rm{O}}_{\rm{2}}}\)
  • B
    None of these
  • C
    both \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) and \({{\rm{H}}_{\rm{2}}}{\rm{O}}\)
  • D
    \({{\rm{H}}_{\rm{2}}}{\rm{O}}\)
    Correct
5
Name the enzyme present in human saliva
  • A
    Peptidase.
  • B
    Pepsin
  • C
    Lipase
  • D
    Ptyalin
    Correct
6
During the process of photosynthesis carbon dioxide is
  • A
    Reduced
    Correct
  • B
    Oxidized
  • C
    Oxidized and reduced simultaneously
  • D
    Dehydrated
7
Which is the vestigial part of human alimentary canal?
  • A
    Vermiform appendix
    Correct
  • B
    thymus gland
  • C
    None of these
  • D
    pineal gland
8
In which kind of respiration more energy is released?
  • A
    Anaerobic respiration
  • B
    Aerobic respiration
    Correct
  • C
    photorespiration
  • D
    All of these
9
Which is the first step of photosynthesis ?
  • A
    Excitation of electron of chlorophyll.
    Correct
  • B
    Attachment of \({\rm{C}}{{\rm{O}}_{\rm{2}}}\) to 5 – carbon sugar
  • C
    Formation of ATP
  • D
    ionization of water
10
Which gland in human body which secreates digestive ezymes as well as hormone?
  • A
    thyroid
  • B
    pancreas
    Correct
  • C
    Testis
  • D
    Ovary
11
Where does the light reaction takes place?
  • A
    Stroma
  • B
    Grana
    Correct
  • C
    None of these
  • D
    both Stroma and Grana
12
What are the end products of fat digestion?
  • A
    Glucose, amino acid
  • B
    Glycerol, amino acid
  • C
    Fatty acid, glycerol
    Correct
  • D
    Amino acid, fatty acid.
13
Which colour of the visible spectrum is most effective in photosynthesis?
  • A
    Red
    Correct
  • B
    Green
  • C
    Yellow
  • D
    Blue
14
Name the passage that leads bile from liver into the gall bladder?
  • A
    colon
  • B
    Caecum
  • C
    Rectum
  • D
    Cystic duct
    Correct
15
What is normal breathing rate in an adult man at rest?
  • A
    10-15 times per minute
  • B
    None of these
  • C
    20-25 times / minute
  • D
    15-18 times / minute
    Correct