Biology Practice Question and Answer

Q:

Who explained the structure and reproductive system of algae in 1935?

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  • 1
    MOP Iyengar 
    Correct
    Wrong
  • 2
    FE Fritsch
    Correct
    Wrong
  • 3
    William Henry
    Correct
    Wrong
  • 4
    Carolus Linnaeus
    Correct
    Wrong
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Answer : 2. "FE Fritsch"
Explanation :

1. Explain the structure and reproductive system of algae in 1935. It was from F.  E. Fritch.

2. The study of algae is known as phycology. It is also known as Algology.

3. Algae are largely aquatic (both fresh and sea water) organisms, which are chlorophyll bearing, simple, thalloid and autotrophic in nature.

Q:

Deficiency of which vitamin results in inflammation of skin and eczema along with diarrhoea?

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  • 1
    Ascorbic acid
    Correct
    Wrong
  • 2
    Folic acid
    Correct
    Wrong
  • 3
    Nicotinic acid
    Correct
    Wrong
  • 4
    Pantothnic acid
    Correct
    Wrong
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Answer : 3. "Nicotinic acid"

Q:

Which of the following virus was first discovered?

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  • 1
    Polio
    Correct
    Wrong
  • 2
    HTLV
    Correct
    Wrong
  • 3
    TMV
    Correct
    Wrong
  • 4
    HIV
    Correct
    Wrong
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Answer : 3. "TMV"

Q:

"B" represents the gene for brown coat colour and “b” represents the gene for white coat colour. In the cross BB x bb all the offsprings have a brown coat. Which genetic principle is illustrated by this cross?

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  • 1
    Multiple alleles
    Correct
    Wrong
  • 2
    Dominance
    Correct
    Wrong
  • 3
    Co-dominance
    Correct
    Wrong
  • 4
    Crossing-over
    Correct
    Wrong
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Answer : 2. "Dominance "

Q:

The yeast used in making bread is?

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  • 1
    acts as a catalyst for fermentation
    Correct
    Wrong
  • 2
    does not help in the process of fermentation
    Correct
    Wrong
  • 3
    acts as a protector
    Correct
    Wrong
  • 4
    makes it tastier
    Correct
    Wrong
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Answer : 1. "acts as a catalyst for fermentation"

Q:

Tissues are made in the body?

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  • 1
    from fat
    Correct
    Wrong
  • 2
    Carbohydrates
    Correct
    Wrong
  • 3
    protein
    Correct
    Wrong
  • 4
    Vitamin
    Correct
    Wrong
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Answer : 3. "protein"

Q:

Are carriers of infectious diseases?

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  • 1
    fly
    Correct
    Wrong
  • 2
    Dogs
    Correct
    Wrong
  • 3
    Mosquito
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 4. "None of these"

Q:

Anemia disease is caused due to deficiency of which vitamin?

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  • 1
    Vitamin B12
    Correct
    Wrong
  • 2
    Vitamin B1
    Correct
    Wrong
  • 3
    Vitamin B3
    Correct
    Wrong
  • 4
    Vitamin C
    Correct
    Wrong
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Answer : 1. "Vitamin B12"
Explanation :

Symptoms of vitamin B12 deficiency or folate deficiency anemia develop slowly and are similar to those of other types of anemia, such as fatigue, weakness, and pale skin. Vitamin B12 deficiency can also cause nerve damage, the main symptoms of which include tingling, loss of touch, and muscle weakness. Confusion can arise when Vitamin B12 becomes too low. Vitamin B12 deficiency anemia in the elderly can be mistaken for dementia. This happens because of similar symptoms.

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