Statement (S): Populations of a species inhabiting different geographical areas are in a continuous process of adaptation to their surrounding environments and this leads to the evolution of new spices. Reason (R): Geographical barriers obstruct interbreeding of populations of a species leading to reproductive isolation and evolution of new species.

1.  Both S and R are not true

2.  Only S is true but not R

3.  Both S and R are true but R does not explain S

4.  Both S and R are true and R is correct explanation to S

View Answer  
4
Correct Answer :

Both S and R are true and R is correct explanation to S


Explanation :
No Explanation available for this question

Which of the following statements are correct with regard to Deuterostomes(a) The blast pore develops into anus in adult(b) The blast pore develops into mouth in adult(c) Cleavage is radial and indeterminate(d) Cleavage is Spiral and indeterminate

1.  (a) and (c)

2.  (a) and (b)

3.  (b) and (d)

4.  (b) and (c)

View Answer  
4
Correct Answer :

(a) and (c)


Explanation :
No Explanation available for this question

Choose the animal which exhibits the following characteristics:(a) Marine habitat(b); Bilateral symmetry with cephalization(c) Haemocoel as principal body cavity(d) Eyes similar to that of vertebrates

1.  Jelly fish

2.  Cuttle fish

3.  Silver fish

4.  Dog fish

View Answer  
4
Correct Answer :

Cuttle fish


Explanation :
No Explanation available for this question

Which of the following is the correct sequence of cell cycle

1.  G1→G2→ S→M

2.  S→M→ G1→G2

3.  G1→S→ G2→ M

4.  M→S→G1→G2

View Answer  
4
Correct Answer :

G1→S→ G2→ M


Explanation :
No Explanation available for this question

The plane that divide the body into right and left halves:

1.  Transverse

2.  Frontal

3.  Sagittal

4.  Radia

View Answer  
4
Correct Answer :

Sagittal


Explanation :
No Explanation available for this question

The fusion of pronuclear of dissimilar gamete is called:

1.  Syngamy

2.  Anisogamy

3.  Isogamy

4.  Hologamy

View Answer  
4
Correct Answer :

Anisogamy


Explanation :
No Explanation available for this question

The process by which a new structure is formed in the tissue of the host during parasitic infection:

1.  Hyperplasia

2.  Neoplasia

3.  Hypertrophy

4.  Gigantism

View Answer  
4
Correct Answer :

Neoplasia


Explanation :
No Explanation available for this question

In pheretima, septa are absent between some of the segments. They are:

1.  1/2, 2/3, 9/10, 10/11

2.  1/2, 2/3, 3/4, 9/10

3.  4/5, 9/10, 10/11, 14/15

4.  1/2, 2/3, 8/9, 10/11

View Answer  
4
Correct Answer :

1/2, 2/3, 3/4, 9/10


Explanation :
No Explanation available for this question

In pheretima, the open types of nephridia are located in these segments:

1.  4th, 5th and 6th

2.  2nd to the last

3.  16th to the last

4.  7th, 9th and 13th

View Answer  
4
Correct Answer :

16th to the last


Explanation :
No Explanation available for this question

The cells, present in the fat bodies of cockroach, which contain symbiotic bacteria that synthesize amino acids, are:

1.  Trophocytes

2.  Mycetocytes

3.  Oenocytes

4.  Urate cells

View Answer  
4
Correct Answer :

Mycetocytes


Explanation :
No Explanation available for this question
Next

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python