Which of the following is not a use of micro-organisms ?

(a) preparation of medicines (or drugas)

(b) preparation of food by photosynthesis

(c) recycling of materials in nature

(d) increasing the fertility of soil

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Solution

(b) preparation of food by photosynthesis

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(a) How do micro-organisms help in increasing soil fertility ?

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Question 1
Organisms which prepare food for themselves using simple naturally available raw materials are referred to as

(a) heterotrophs
(b) autotrophs
(c) parasites
(d) saprophytes

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Which of the following is not a use of micro-organisms ? (a) preparation of medicines (or drugas) (b) preparation of food by photosynthesis (c) recycling of materials in nature (d) increasing the fertility of soil

(b) preparation of food by photosynthesis

Which of the following is not a use of micro-organisms ?

(a) preparation of medicines (or drugas)

(b) preparation of food by photosynthesis

(c) recycling of materials in nature

(d) increasing the fertility of soil