16
Q:

The grouping of blood is based on substances called

A) antibodies B) antigens
C) antitoxin D) enzymes

Answer:   B) antigens



Explanation:

The red blood corpuscles or Erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen A in their red corpuscles.The AB group persons have both antigen A and antigen B in their erythrocytes.The 'O'group persons have no antigens in their red corpuscles.

Subject: Biology
Q:

Which of these is the energy conversion that happens in the process called photosynthesis?

 

A) Potential energy to chemical energy   B) Light energy to chemical energy  
C) Heat energy to chemical energy   D) Heat energy to light energy  
 
Answer & Explanation Answer: B) Light energy to chemical energy  

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3 1072
Q:

The plant hormone that helps in the growth of the stem is ...........

 

A) Gibberellins B) Cytokinins
C) Auxins D) Insulin
 
Answer & Explanation Answer: C) Auxins

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4 1151
Q:

The pressure variations inside the inner ear are turned into electrical signals by the:

 

A) Cochlea B) Hammer
C) Stirrup D) Anvil
 
Answer & Explanation Answer: A) Cochlea

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1 3087
Q:

What is the straight tube, about 40 cm long, that carries sperms to the seminal vesicles, called?

 

A) Urethra B) Penis
C) epithelial D) connective
 
Answer & Explanation Answer: C) epithelial

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3 1578
Q:

Xylem is a/an ......... tissue.

 

A) simple permanent B) complex permanent
C) epithelial D) connective
 
Answer & Explanation Answer: B) complex permanent

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2 397
Q:

The carpel contains ............

 

A) Pollen grains B) Sepals
C) Petals D) Ovules
 
Answer & Explanation Answer: D) Ovules

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2 668
Q:

Chiropody is a branch of science related to which part of the body?

 

A) Liver B) Kidney
C) Feet D) Lungs
 
Answer & Explanation Answer: C) Feet

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2 2775
Q:

Pernicious anaemia is caused by the deficiency of vitamin .......

 

A) B2 B) B6
C) B1 D) B1
 
Answer & Explanation Answer: D) B1

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1 1418