Question 3
Which of the following statement is not true for organic manure?

(a) It enhances water holding capacity of soil.
(b) It has a balance of all plant nutrients.
(c) It provides humus to soil.
(d) It improves texture of soil.

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Solution

(b) It has a balance of all plant nutrients.

Although organic manures have numerous merits but they lack in providing all necessary nutrients to the crops. Hence they do not have a balance of all the plant nutrients.

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Q. Question 3
Which of the following statement is not true for organic manure?

(a) It enhances water holding capacity of soil.
(b) It has a balance of all plant nutrients.
(c) It provides humus to soil.
(d) It improves texture of soil.

True or false?

(a) The texture of soil can be determined from its colour.

(b) Soil is formed by the fast flowing currents of water.

Q. Find out the correct sentences about manure.
(i) manure contains large quantities of organic matter and small quantities of nutrients
(ii) manure increase the water holding capacity of sandy soil.
(iii) manure helps in draining out of excess of water from clayey soil.
(iv) excessive use of manure pollutes environment because it is made of animal excretory waste

Q. 22. Consider the following sentence about manure –
1. Manure contains large quantities of organic matter and small quantities of nutrients.
2. It increases the water holding capacity of sandy soil.
3. It helps in draining out of excess of water from clayey soil.
4. Its excessive use pollutes environment because it is made of animal excretory waste.
Correct answer code is –

Question 8
Find out the correct sentence about manure

(i) Manure contains large quantities of organic matter and small quantities of nutrients.

(ii) It increases the water holding capacity of sandy soil.

(iii) It helps in draining out of excess of water from clayey soil.

(iv) Its excessive use pollutes environment because it is made of animal excretory waste.

(a) (i) and (iii)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iii) and (iv)

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Difference between Manure and Fertilizers

Standard VIII Biology

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Question 3 Which of the following statement is not true for organic manure? (a) It enhances water holding capacity of soil. (b) It has a balance of all plant nutrients. (c) It provides humus to soil. (d) It improves texture of soil.

(b) It has a balance of all plant nutrients. Although organic manures have numerous merits but they lack in providing all necessary nutrients to the crops. Hence they do not have a balance of all the plant nutrients.

Question 3
Which of the following statement is not true for organic manure?

(a) It enhances water holding capacity of soil.
(b) It has a balance of all plant nutrients.
(c) It provides humus to soil.
(d) It improves texture of soil.

(b) It has a balance of all plant nutrients.

Although organic manures have numerous merits but they lack in providing all necessary nutrients to the crops. Hence they do not have a balance of all the plant nutrients.