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Assertion : If you burn a plant , its ni...

Assertion : If you burn a plant , its nitrogen component is given off as ammonia and other gases .
Reason : Hydroponics does not allow plants to grow well if they are supplied with all the mineral nutrients they need.

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

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The correct Answer is:
C
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Assertion : Leguminous plants can grow well in N_(2) - deficient soils . Reason : They need little nitrogen .

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Read the following statements and choose the correct one from the options given below. (i) Hydroponics is the practice of growing plants in nutrient - enriched water , without soil. (ii) Hydroponics has been successfully employed as a technique for the commercial production of vegetables such as tomato. (iii) Hydroponics methods require purified water and non - mineral nutrient salts. (iv) The nutrient solutions should not be aerated to obtain optimum growth.

Despite having large reserves of coal, why does India important millions of tonnes of coal ? 1. It is the policy of India to sabe its own coal reserves for future, and import it from other countries for the present use . 2. Most of the power plants in India are coal - based and they are not able to get sufficient supplies of coal from withing the country. 3. Steel companies need large quantity of coking coal which has to be imported. Which of the statements given above is.are correct ?

TRUEMAN BIOLOGY-Plant Physiology -ASSERTION AND REASON
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  2. Assertion : Auxillary buds, in actively growing herbaceous plants, gen...

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  3. Assertion : If you burn a plant , its nitrogen component is given of...

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  4. [A]: Amino acids are converted into ammonia by a group bacteria called...

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  5. [A]: Due to excessive use of fertilizers, the available water to the p...

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  6. [A]: Vernalization is also called as yarovization. [R]: In short day...

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  7. [A]: Fundamental factor in the vernalization is low temperature. [R...

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  8. [Aj: ABA plays an important role in plants during water stress and dro...

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  9. (A]: Cytokinins help in retention of cholorophyll and delayed senescen...

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  10. [A]: The germination of lettuce seeds is stimulated by red light and i...

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  11. [A]: The far-red form of the phytochromes ab- sorb light at 740 nm. ...

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  12. [A]: Elongation and division of cells are pro- moted by gibberellins. ...

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  13. [A]: Senescence effect can be reversed by cytokinin. [R]: The loss ...

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  14. [A]: Wilting occurs due to loss in turgidity. [R]: Turgor pressure c...

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  15. [A]: Plasmolysis is seen by both living and dead cells. [R]: Both ty...

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  16. [A]: The water is absorbed by the root and moves into the stem. [R]...

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  17. [A]: Sulphur stabilizes protein structure. [R]: It does not partici...

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  18. [A]: Stomata remain open during day [R]: Stomata help in gaseous exc...

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  19. [A]: The nitrogen content of the plant cannot be detected accurately b...

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  20. [A]: Submerged plants, get CO2 in-the form of CO3^(-) & HCO3^(-3) [R...

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