Multiple Choice Questions (MCQ) on Life Processes

Multiple Choice Questions (MCQ) on Life Processes

1-The processes which together perform the maintenance job are

(A) life proceedings

(B) life processes

(C) life maintenance

(D) none of the above


2- ___ reactions are some of the most common chemical means to break-down molecules.

(A) oxidising

(B) reducing

(C) oxidizing-reducing

(D) none of the above


3- The process of acquiring oxygen from outside the body, and to use it in the process of break-down of food sources for cellular needs, is called ___ .

(A) respiration

(B) digestion

(C) oxidising

(D) excretion


4- These waste byproducts are needed to be removed from the body and discarded outside  by a process called

(A) respiration

(B) digestion

(C) reducing

(D) excretion


5-Following are autotrophs

(A) green plants

(B) some bacteria

(C) both (A) and (B)

(D) enzymes


6-Following is true for heterotrophs

(A) Heterotrophs survival depends directly or indirectly on autotrophs

(B) Heterotrophic organisms include animals and fungi

(C) In heterotrophs, complex substances have to be broken down into simpler ones

(D) All of the above


7-Carbon and energy requirements of the autotrophic organism are fulfilled by

(A) enzymes

(B) photosynthesis

(C) bacteria

(D) none of the above


8- ___ are utilised for providing energy to the plant.

(A) Carbohydrates

(B) Vitamins

(C) Proteins

(D) Fats


9- The following event(s) occur during photosynthesis

(A) Absorption of light energy by chlorophyll

(B) Conversion of light energy to chemical energy

(C) Reduction of carbon dioxide to carbohydrates

(D) All of the above


10-Chlorophyll is contained in

(A) leaf

(B) stem

(C) roots

(D) all of the above



1-(B), 2-(C), 3-(A), 4-(D), 5-(C), 6-(D), 7-(B), 8-(A), 9-(D), 10-(A)