Weberian ossicles are found in :

1.  frog

2.  snakes

3.   fishes

4.  birds

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4
Correct Answer :

fishes


Explanation :
No Explanation available for this question

Assertion : Transmission of nerve impulse across a synapse is accomplished by neurotransmitters. Reason : Transmission across a synapse usually required neurotransmitter because there is a small space, i. e. , synaptic cleft, that separates one neuron from another.

1.  A

2.   B

3.   C

4.  D

5.  E

View Answer  
5
Correct Answer :

A


Explanation :
No Explanation available for this question

Assertion : Enzymes have active sites and substrates reactive sites on their surfaces respectively. Reason : Active and reactive sites push the enzyme and substrate molecules away from each other.

1.  A

2.   B

3.  C

4.   D

5.   E

View Answer  
5
Correct Answer :

C


Explanation :
No Explanation available for this question

Assertion : Muscles fibres of SA node possess the lowest rhythmicity among all cardiac muscles. Reason : Due to this fact, it can initiate excitory wave at the highest rate.

1.  A

2.  B

3.   C

4.  D

5.  E

View Answer  
5
Correct Answer :

E


Explanation :
No Explanation available for this question

Assertion : The genetic complement of an organism is called genotype. Reason : Genotype has the type of hereditary properties of an organism.

1.  A

2.   B

3.  C

4.   D

5.  E

View Answer  
5
Correct Answer :

A


Explanation :
No Explanation available for this question

Assertion : Mitochondria help in photosynthesis. Reason : Mitochondria have enzymes for dark reaction.

1.  A

2.  B

3.  C

4.  D

5.  E

View Answer  
5
Correct Answer :

D


Explanation :
No Explanation available for this question

Assertion : Birds have one ovary. Reason : This reduces the body weight for flight.

1.   A

2.   B

3.   C

4.   D

5.   E

View Answer  
5
Correct Answer :

A


Explanation :
No Explanation available for this question

Assertion : Light is very important factor in transpiration. Reason : It induces stomatal opening and darkness closing. Therefore, transpiration increases in light and decreases in dark.

1.  A

2.  B

3.  C

4.  D

5.  E

View Answer  
5
Correct Answer :

A



Explanation :
No Explanation available for this question

Assertion : Waxy and cutin coating on plant parts reduce the transpiration. Reason : These adaptation are found in xerophytes.

1.  A

2.  B

3.   C

4.   D

5.   E

View Answer  
5
Correct Answer :

A


Explanation :
No Explanation available for this question

Assertion : Higher plants have meristematic region for indefinite growth. Reason : Higher plants have root and shoot apices.

1.  A

2.   B

3.  C

4.  D

5.  E

View Answer  
5
Correct Answer :

A


Explanation :
No Explanation available for this question
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