4
Q:

Plants grow in size because of 

A) addition of cells B) increase in size of cells
C) enlargement of cells D) elongation of cells

Answer:   A) addition of cells



Explanation:

Plants grow in size both in height and in grith. Enlargement  of cells already present cannot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.

Subject: Biology
Q:

Who performs the task of capturing oxygen in the blood?

 

A) White blood cells B) Red blood cells
C) Chlorophyll D) Haemoglobin
 
Answer & Explanation Answer: D) Haemoglobin

Explanation:
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85 11051
Q:

Which of the following diseases is NOT transmitted from one person to another?

 

A) Syphilis B) Hepatitis B
C) AIDS D) Cirrhosis
 
Answer & Explanation Answer: D) Cirrhosis

Explanation:
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40 8484
Q:

“All the plants and animals are composed of cells and the cell is the basic unit of life”. The given statement is for which of the following theories?

 

A) Theory of evolution   B) Theory of inheritance  
C) Cell theory   D) Theory of natural selection  
 
Answer & Explanation Answer: C) Cell theory  

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8 1720
Q:

Rings of ______ are present in the throat to ensure that the air passage does NOT collapse

 

A) Bone   B) Tendon  
C) Ligament   D) Cartilage  
 
Answer & Explanation Answer: D) Cartilage  

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10 6512
Q:

Which among the following is the food tube?

 

A) Thymus B) Aorta
C) Larynx D) Oesophagus
 
Answer & Explanation Answer: D) Oesophagus

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9 5719
Q:

What is the junction between an axon ending with the dendrite of another nerve cell called?

 

 

A) Synapse B) Neuron
C) Synaptic Cleft D) Node of Ranvier
 
Answer & Explanation Answer: A) Synapse

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10 6962
Q:

Plants in the ............ group are commonly called algae.

 

A) Bryophyta B) Thallophyta
C) Gymnosperms D) Pteridophyta
 
Answer & Explanation Answer: B) Thallophyta

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12 7291
Q:

Which of the following is an example of a Rhizome?

 

A) Ginger B) Sugarcane
C) Onion D) Potato
 
Answer & Explanation Answer: A) Ginger

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18 7950