Biology Questions

Q:

Which of the following is not among the 3 main classes of Algae?

A) Chlorophyceae B) Rhodophyceae
C) Phaeophyceae D) Gymnosperms
 
Answer & Explanation Answer: D) Gymnosperms

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Q:

Ethylene is a ______ molecule.

A) polar B) ionic
C) covalent D) nonpolar
 
Answer & Explanation Answer: D) nonpolar

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Q:

Why do the desert plants take up the carbon dioxide for photosynthesis at night?

A) To prevent water loss B) To enhance carbon absorption
C) To release excess oxygen D) No option is correct
 
Answer & Explanation Answer: A) To prevent water loss

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Q:

___________ being a higher category, is the assemblage of families which exhibit a few similar characters.

A) Order B) Species
C) Genus D) Class
 
Answer & Explanation Answer: A) Order

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Q:

The hardest part of the body is ______.

A) Bones B) Tooth Enamel
C) Skull D) Spinal Cord
 
Answer & Explanation Answer: B) Tooth Enamel

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Q:

A healthy adult man has, on an average, ________ (in millions) of RBCs mm-3 of blood.

A) 5 - 5.5 B) 4 - 4.5
C) 3 - 3.5 D) 6 - 6.5
 
Answer & Explanation Answer: A) 5 - 5.5

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Q:

Lacrymal glands are situated in the

A)  Palms B) Buccal cavity
C) Buccal cavity D) Stomach
 
Answer & Explanation Answer: C) Buccal cavity

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Q:

Which type of cell, skin is made up of:

A) Epidermal cells B) Connective tissue
C) Permanent tissues D) Parenchyma
 
Answer & Explanation Answer: A) Epidermal cells

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