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 Biology Questions

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Q:

Which tissue makes the plant hard and stiff?

A) Parenchyma B) Sclerenchyma
C) Collenchyma D) Xylem
 
Answer & Explanation Answer: B) Sclerenchyma

Explanation:
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Q:

Gastrulation is the process that directly forms the

A) Ectoderm B) Endoderm
C) Mesoderm D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Gastrulation rearranges the cells of the blastula and ultimately forms the three germ layers of the embryo. The primary layers that will form all of the major body and organ systems of the organism, these germ layers include the ectoderm, mesoderm, and endoderm.

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Q:

What is the average Life span of RBC?

A) 120 days B) 99 days
C) 101 days D) 111 days
 
Answer & Explanation Answer: A) 120 days

Explanation:

The average Life span of RBC is 120 days.

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Q:

Example of a single celled organism

A) Algae B) Amaeba
C) Paramaecium D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Single selled organisms are also known as Unicellular organisms in which they have only one cell.

Examples are :: Fungi, Algae, Amaeba, Paramaecium,...

 

Hence, all the above given options are single selled organisms.

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Q:

Which of the following may cause the breakdown of pyruvate into lactic acid in our muscles?

A) Lack of water B) Lack of Oxygen
C) Lack of carbon dioxide D) Lack of nitrogen  
 
Answer & Explanation Answer: B) Lack of Oxygen

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Q:

The size of the pupil is controlled by the

A) Retina B) Iris
C) Cornea D) Lens
 
Answer & Explanation Answer: B) Iris

Explanation:

The size of the pupil is controlled by the Iris when light enters the eye.

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Q:

Unlike eutherians, both monotremes and marsupials

A) have some embryonic development outside the uterus B) are found in Australia
C) lay eggs D) lack nipples
 
Answer & Explanation Answer: A) have some embryonic development outside the uterus

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Q:

Sycon (Scypha), Spongilla (Fresh water sponge) and Euspongia (Bath sponge) are examples of which Phylum?

A) Coelenterata B) Platyhelminthes
C) Ctenophora D) Porifera
 
Answer & Explanation Answer: D) Porifera

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