Basic Computer Knowledge 10000 + Questions and Answers

RRB Group D - ALP 2018 Maths & Reasoning Free Mock Test

Biology Questions and Answers For Groups

  • 1. The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the following?
A.) Carbohydrates
B.) Amino acids
C.) Protein and amino acids
D.) Lipids

Answer: Option 'C'

Protein and amino acids

  • 2. Name the blood cells in which nucleus is absent
A.) Monocytes
B.) Blood Platelets
C.) Lymphocytes
D.) Eosinophils

Answer: Option 'B'

​Blood Platelets

  • 3. Animal without red blood cells
A.) Earthworm
B.) Snake
C.) Peacock
D.) Frog

Answer: Option 'A'

​Earthworm

  • 4. The phenomenon of summer sleep by animals is called
A.) laziness
B.) aestivation
C.) hibernation
D.) lethargy

Answer: Option 'B'

Aestivation is summer sleep. Many organisms like the snails do not find it comfortable in summer. They withdraw and lead a life with reduced BMR (basic Metabolic Rate) in a state of  dormancy.

  • 5. The human heart is 
A.) Pulsating heart
B.) Myogenic heart
C.) Ampullary heart
D.) Neurogenic heart

Answer: Option 'B'

​Myogenic heart
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.

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