Biology Questions Practice Question and Answer

Q:

Which of the following can degrade detritus into simpler inorganic substances?

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  • 1
    Algae
    Correct
    Wrong
  • 2
    Phytoplankton
    Correct
    Wrong
  • 3
    Fungal enzymes
    Correct
    Wrong
  • 4
    Lichens
    Correct
    Wrong
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Answer : 3. "Fungal enzymes"
Explanation :

1. Fungal enzymes decompose simple inorganic substances.

2. Fungi are a type of microorganisms that decompose organic matter.

3. Enzymes break down organic matter into smaller molecules, which can then be used by the body of the fungus.

Q:

Which of the following factors is responsible for the disease called 'Mad Hatter's Disease'?

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  • 1
    Inhalation of iron dust
    Correct
    Wrong
  • 2
    Inhaling silica dust
    Correct
    Wrong
  • 3
    Mercury poisoning
    Correct
    Wrong
  • 4
    Vitamin-D deficiency
    Correct
    Wrong
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Answer : 3. "Mercury poisoning"
Explanation :

1. Mercury poisoning is responsible for which of the following diseases called 'Mad Hatter's Disease'?

2. Mad Hatter's Disease is a form of mercury poisoning that affects the brain and nervous system.

3. There is a risk of mental and behavioural changes, such as confusion, hallucination, and irritability etc. in this disease.

Q:

The tissue in man where no cell division occur after birth is

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  • 1
    Skeletal
    Correct
    Wrong
  • 2
    Nerves
    Correct
    Wrong
  • 3
    Connective
    Correct
    Wrong
  • 4
    Germinal
    Correct
    Wrong
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Answer : 2. "Nerves "

Q:

Which group of animals are named because of their spiny skin and a peculiar water-driven tube system that they use for moving around?

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  • 1
    Hemichordata 
    Correct
    Wrong
  • 2
    Aschelminthes 
    Correct
    Wrong
  • 3
    Echinodermata 
    Correct
    Wrong
  • 4
    Mollusca 
    Correct
    Wrong
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Answer : 3. "Echinodermata "
Explanation :

1. All the creatures of Echinodermata phylum are marine and have thorny bodies.

2. There is a mass flow system in their body.

3. A specific water-conveying canal system is found, which helps in their movement.

Q:

RNA is a polymeric molecule. What does RNA stand for?

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  • 1
    Rhino Nuclear Acid
    Correct
    Wrong
  • 2
    Resto Nucleus Acid
    Correct
    Wrong
  • 3
    Rado Nuclear Acid
    Correct
    Wrong
  • 4
    Ribo Nucleic Acid
    Correct
    Wrong
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Answer : 4. "Ribo Nucleic Acid"

Q:

Which of the following dust causes lung cancer?

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  • 1
    Led
    Correct
    Wrong
  • 2
    Asbestos
    Correct
    Wrong
  • 3
    Carbon monoxide
    Correct
    Wrong
  • 4
    Cadmium
    Correct
    Wrong
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Answer : 2. "Asbestos"

Q:

Which is the smallest bone in the human body?

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  • 1
    Stapes
    Correct
    Wrong
  • 2
    Phalanges
    Correct
    Wrong
  • 3
    Humerus
    Correct
    Wrong
  • 4
    Pelvis
    Correct
    Wrong
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Answer : 1. "Stapes"
Explanation :

1. The smallest bone in the human body is the stapes.

2. This bone is located in the middle ear.

3. The length of the stapes is about 3 millimeters.

Q:

Which of the following is a correct match?

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  • 1
    Down's syndrome - 21st chromosome
    Correct
    Wrong
  • 2
    Sickle-cell anaemia - X-chromosome
    Correct
    Wrong
  • 3
    Haemophilia - Y- chromosome
    Correct
    Wrong
  • 4
    Parkinson's - X and Y-chromosome
    Correct
    Wrong
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Answer : 1. "Down's syndrome - 21st chromosome "

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