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Q:

Animal without red blood cells

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

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Filed Under: Biology

Q:

Melvin calvin got Noble Prize for his studies on

A) Light reaction B) Plant hormones
C) Carbon fixation D) Photons
 
Answer & Explanation Answer: C) Carbon fixation

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Filed Under: Biology

Q:

Blood pressure is measured with

A) Thermometer B) Barometer
C) Sphygmomanometer D) Lactometer
 
Answer & Explanation Answer: C) Sphygmomanometer

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Filed Under: Biology

Q:

The valve present between left auricle and left ventricle is

A) Mitral B) Tricuspid
C) Semilunar D) Pulmonary
 
Answer & Explanation Answer: A) Mitral

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Filed Under: Biology

Q:

In plants, exchange of gases takes place through

A) Stomata B) Palisade tissue
C) Spongy tissue D) mid rib
 
Answer & Explanation Answer: A) Stomata

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Filed Under: Biology

Q:

karl Landsteiner discovered

A) Blood corpuscles B) Blood groups
C) Blood vessels D) Proteins in Blood
 
Answer & Explanation Answer: B) Blood groups

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Filed Under: Biology

Q:

Total salt content in blood is about

A) 1.85 to 1.9% B) 11.85 to 11.9%
C) 2.85 to 2.9% D) 0.85 to 0.9%
 
Answer & Explanation Answer: D) 0.85 to 0.9%

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Q:

In electro - magnetic radiation, which of the following has greater wave - length than visible light

A) Ultra -violet rays B) Infra - red rays
C) Cosmic rays D) x-rays
 
Answer & Explanation Answer: B) Infra - red rays

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Filed Under: Biology