Biology Questions

Q:

The later (second) formed primary xylem elements are called _____________.

A) Protoxylem B) Metaxylem
C) Xylem parenchyma D) Xylem fibres
 
Answer & Explanation Answer: B) Metaxylem

Explanation:
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Q:

Which of the following are known as the suicide bags of cells?

A) Lysosomes B) Golgi bodies
C) Nucleoli D) Ribosomes
 
Answer & Explanation Answer: A) Lysosomes

Explanation:

Lysosome is an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane. They are capable of breaking down all types of biological polymers like proteins, nucleic acids, carbohydrates, and lipids.

 

Lysosomes are known as the suicide bags of cells because whe any cell gets damaged these organelles burst and the enzymes present in it will digest the damaged cell.

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6 1601
Q:

Which blood group is called universal donor?

A) AB- B) O-
C) AB+ D) O+
 
Answer & Explanation Answer: B) O-

Explanation:

O- blood group is called universal donor. AB+ is called as universal acceptor.

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Q:

The secretion from the prostate gland enters into the:

A) Kidney B) Ureter
C) Urethra D) Testis
 
Answer & Explanation Answer: C) Urethra

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Q:

Which is the only one example of Mollusca Phylum?

A) Locust B) Butterfly
C) Scorpion D) Octopus
 
Answer & Explanation Answer: D) Octopus

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Q:

A US team of scientists has found that the mechanism responsible for the ageing process is located --

A) Inside the face B) Inside the skin
C) Inside the brain D) Inside the heart
 
Answer & Explanation Answer: C) Inside the brain

Explanation:
The US team of scientists found the mechanism in the hypothalamus, which is located deep inside the brain and showed that it is responsible for the ageing process.
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Q:

With which of the following body organ is 'pace-maker' associated?

A) Liver B) Brain
C) Heart D) Lungs
 
Answer & Explanation Answer: B) Brain

Explanation:
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Q:

Which of the following is a work done by the placenta tissue in humans?

A) Support the embryo B) Removes waste matter from the embryo and provide nutrition to the embryo
C) Provide nutrition to the embryo D) Remove waste matter from the embryo
 
Answer & Explanation Answer: B) Removes waste matter from the embryo and provide nutrition to the embryo

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