+10,000 Biology Questions, Tests and Polls
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+10,000 Biology Questions and Answers
Written and organized in a logical way to make the learning of basic Biology easier
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A non-renewale source of energy is
Anonymous Quiz
10%
Wile life
66%
Fossils fuels
16%
Water
8%
Forest
Inorganic nutrients are present in the soil in the form of
Anonymous Quiz
35%
Organic compounds
13%
Atoms
35%
Electrically charged ions
17%
Molecules
nitrogen is an important constituent of
Anonymous Quiz
54%
Proteins
13%
Lipids
18%
Carbohydrates
16%
Phospholipids
A trace element essential for plant growth and radioactive isotope which is used in cancer therapy is
known as
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13%
Iron
17%
Sodium
57%
Cobalt
13%
Calcium
Match the followings an choose the correct combination from the options given:
List - I List - II
a. Sulphur 1. chlorophyll b. Zinc 2. nitrogenase c. Magnesium 3. Methionine d. Molybdenum 4. Auxin
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12%
a – 1, b – 2, c – 3, d – 4
52%
a – 3, b – 4, c – 1, d – 2
25%
a – 3, b – 1, c – 2, d – 4
11%
a – 2, b – 4, c – 1, d – 3
Active transport from outside to inside of molecules across a membrane requires
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9%
Phloroglucinol
19%
Acetyle chlorine
64%
ATP
8%
Cyclic AMP
Which one of the following mineral elements plays an in biological nitrogen fixation?
Anonymous Quiz
12%
Copper
24%
Zinc
30%
Manganese
35%
Molybdenum
Mineral salts which are absorbed by the roots from soil are in the form of
Anonymous Quiz
16%
Very concentrated solution
33%
Concentrated solution
38%
Dilute solution
13%
Very dilute solution
Which of the following is a rootless aquatic plant in which a portion of the leaf forms a tiny sac for
trapping insects?
Anonymous Quiz
30%
Utricularia
24%
Drosera
35%
Nepenthes
11%
Dionaea
Gray spots of oat are caused by deficiency of
Anonymous Quiz
20%
Fe
38%
Zn
29%
Mn
13%
Cu