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Q:

The human heart is 

A) Neurogenic heart B) Myogenic heart
C) Pulsating heart D) Ampullary heart
 
Answer & Explanation Answer: B) Myogenic heart

Explanation:

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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Filed Under: Biology

756 38911
Q:

Who is known as father of Zoology

A) Darwin B) Aristotle
C) Lamark D) Theophrastus
 
Answer & Explanation Answer: B) Aristotle

Explanation:
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Filed Under: Biology

603 33730
Q:

Spermology is the study of

A) Seed B) Leaf
C) Fruit D) Pollen grain
 
Answer & Explanation Answer: A) Seed

Explanation:
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Filed Under: Biology

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Q:

Animal without red blood cells

A) Frog B) Earthworm
C) Snake D) Peacock
 
Answer & Explanation Answer: B) Earthworm

Explanation:
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Filed Under: Biology

406 32748
Q:

13 - Chambered heart occurs in

A) Leech B) Earthworm
C) Snail D) Cockroach
 
Answer & Explanation Answer: D) Cockroach

Explanation:
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Q:

The energy released by 1 gram of glucose is

A) 6 kcal B) 4 kcal
C) 5 kcal D) 3kcal
 
Answer & Explanation Answer: B) 4 kcal

Explanation:
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Q:

The phenomenon of summer sleep by animals is called

A) hibernation B) aestivation
C) laziness D) lethargy
 
Answer & Explanation Answer: B) aestivation

Explanation:

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.

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Q:

The corner of the cells of collenchyma tissue in plant are thickened due to deposition of _____

A) Lignin and suberin B) Suberin and cutin
C) Cellulose and pectin D) Chitin and lignin
 
Answer & Explanation Answer: C) Cellulose and pectin

Explanation:
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Filed Under: Biology

283 27733