Transportation of water takes place through continuous tubes in roots, stem and leaves are called as...? Mcqs

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Transportation of water takes place through continuous tubes in roots, stem and leaves are called as...?

(A) Xylem
(B) Phloem

(C) Stomata
(D) Cambium

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The study of heavenly bodies is known as_________...?

(A) Astrology
(B) Astronautics

(C) Astronomy
(D) Astrophysics

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Which is the best indication that a chemical reaction has taken place...?

(A) Blue powder turns water blue
(B) Metal budding when placed in an unknown liquid

(C) A white substance dissolving in water
(D) None

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Which of the following was first to be discovered in the chromospheres of the sun...?

(A) Krypton
(B) Xenon

(C) Neon
(D) Helium

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Dolly is the name of the ...?

(A) First cloned sheep
(B) First cloned monkey

(C) First test-tube baby
(D) First human fossil

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If an enclosed gas container with moveable piston is heated. What will happen...?

(A) Volume will be decreased
(B) Volume will remain constant

(C) Volume will be increased
(D) Pressure will be increased

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Which layer of the atmosphere reflects radio waves back to the earth’s surface...?

(A) Troposphere
(B) Stratosphere

(C) Ozone layer
(D) Ionosphere

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Enzyme changes in pH can cause enzymes to ______...?

(A) Denature
(B) Activate

(C) Inhibit
(D) Stabilize

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Decibel (dB) is the unit which can be used to measure the:...?

(A) Amplitude
(B) Wavelength

(C) Pitch
(D) None

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Stratosphere is the atmospheric layer that absorbs most of __________ that Earth receives from the Sun....?

(A) Infrared radiation
(B) Ultraviolet radiation

(C) Ozone layer
(D) Radio waves

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