In blood, the percentage of water is___________...? Mcqs

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In blood, the percentage of water is___________...?

(A) 75%
(B) 85%

(C) 90%
(D) 95%

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In plants, water and minerals are transported from roots to the leaves by ____...?

(A) Phloem
(B) Xylem

(C) Stomata
(D) Cambium

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Organisms that eat all the dead and waste products of producers and consumers are called...?

(A) Producers
(B) Consumers

(C) Decomposers
(D) None

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Animals use nitrogen in the form of_________...?

(A) Nitrogen
(B) Nitrates

(C) Nitrites
(D) None of Above

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Sound travels in the form of waves called...?

(A) Longitudinal Waves
(B) Transverse waves

(C) Electromagnetic waves
(D) Radio waves

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Which of the following invention is oldest ...?

(A) Clock
(B) Microscope

(C) Barometer
(D) Cycle

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In general, the most destructive earthquake waves are the __________ ...?

(A) P waves
(B) S waves

(C) Surface waves
(D) All of the above

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Period of extensive metabolic activity, in which cell grow, enzymes are synthesizes...?

(A) S phase
(B) M phase

(C) G2 phase
(D) G1 phase

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Ozone layer is part of ______...?

(A) Mesosphere
(B) Stratosphere

(C) Thermosphere
(D) Troposphere

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What amount of fats give energy of 9.3 K Calories...?

(A) 0.5 gram
(B) 1.0 gram

(C) 2.0 gram
(D) 4.1 gram

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