The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the following?
Name the blood cells in which nucleus is absent
Animal without red blood cells
The phenomenon of summer sleep by animals is called
The human heart is
Answer: Option 'B'
Hearts are of several types. In some invertebrates the heart is simulated by the nervous system to do its work. Such hearts are called Neurogenic hearts. The Human heart is myogenic. i.e, it recieves the stimuli for contraction from the muscular node called sinu-auricular node or pace maker.
Who is known as father of Zoology
13 - Chambered heart occurs in
The energy released by 1 gram of glucose is