Chromatophores take part in

A temporaryendocrine gland in the human body is

In the dicot root the vascular cambium originates from

Between which among the following, the relationship is not an example of commensalism?

Which is the national aquatic animal of India?

Variations caused by mutation, as proposed by Hugo de Vries, are

Match List \(I\) with List \(II\).

List \(I\)	List \(II\)
(A). Mast cells	(I). Ciliated epithelium
(B). Inner surface of bronchiole	(II). Areolar connective tissue
(C). Blood	(III). Cuboidal epithelium
(D). Tubular parts of nephron	(IV). Specialised connective tissue

Choose the correct answer from the options give below:

A microscope has an objective of focal length 2 cm , eyepiece of focal length 4 cm and the tube length of 40 cm . If the distance of distinct vision of eye is 25 cm , the magnification in the microscope is :

A woman has an \(X\)-linked condition on one of her \(X\) chromosomes. This chromosomes can be inherited by

The order of stability of the following tautomeric compounds is \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_2} = C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(I)}  \rightleftharpoons \) \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C - C{H_2} - C - C{H_3}} 
\end{array}}\limits_{(II)}  \rightleftharpoons \) \(\mathop {\begin{array}{*{20}{c}}
  {OH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||} \\ 
  {C{H_3} - C = CH - C - C{H_3}} 
\end{array}}\limits_{(III)} \)

Which of the following sexually transmitted diseases do not specifically affect reproductive organs?

Which of the following is not a sexually transmitted disease?

Which of the following options does correctly represent the characteristic features of phylum Annelida?