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The hormone ……….is effective in preventi...

The hormone ……….is effective in prevention and retardation of growth, lead wilting, etc.
Auxin
Cytokinin
Gibberellin
Abscisic acid

A

Auxin

B

Cytokinin

C

Gibberellin

D

Abscisic acid

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Read the following paragraph and answer the questions based on it. Rhizobium produce nitrogenous compounds from atmospheric nitrogen. However, for this process of nitrogen fixation, they need leguminous plants like beans, sweet pea, soyabean, etc. as ‘host’. Rhizobium living in root nodules supply nitrates, nitrites and amino acids to that plant and in exchange get energy in the form of carbohydrates from it. Such a mutually beneficial relationship is called symbiosis. Beans and pulses are rich in proteins due to the nitrogenous compounds made available by Rhizobium. After harvesting a leguminous crop, the left-over roots and other plant parts are deliberately dumped in farm soil to maintain its bacterial population. The use of Rhizobium has helped to reduce the use of chemical fertilizers and thereby their adverse effects. It has also helped to reduce expenses on fertilizers and thus works to the benefit of farmers. What is provided by the host plant to the Rhizobium bacteria?

Read the following paragraph and answer the questions based on it. Rhizobium produce nitrogenous compounds from atmospheric nitrogen. However, for this process of nitrogen fixation, they need leguminous plants like beans, sweet pea, soyabean, etc. as ‘host’. Rhizobium living in root nodules supply nitrates, nitrites and amino acids to that plant and in exchange get energy in the form of carbohydrates from it. Such a mutually beneficial relationship is called symbiosis. Beans and pulses are rich in proteins due to the nitrogenous compounds made available by Rhizobium. After harvesting a leguminous crop, the left-over roots and other plant parts are deliberately dumped in farm soil to maintain its bacterial population. The use of Rhizobium has helped to reduce the use of chemical fertilizers and thereby their adverse effects. It has also helped to reduce expenses on fertilizers and thus works to the benefit of farmers. How does Rhizobium help to save money of the farmers?

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CHETANA PUBLICATION-Life Processes In Living Organisms-EXERCISE
  1. The movement of root system towards stimulus of water is called ……….m...

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  2. Hormone………helps in cell division. Auxin Gibberellin Cytokinin Absc...

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  3. The hormone ……….is effective in prevention and retardation of growth, ...

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  4. ………….neurons conduct impulses from the sensory organs to the brain and...

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  5. The brain of an adult human weighs about ………… . 500 - 600 grams 2-3 ...

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  6. …………..is the largest part of the brain. Cerebrum Cerebellum Medulla...

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  7. There are two triangular swollen structure called ………….on the upper si...

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  8. Control of voluntary movements is done by ……….. . Cerebrum Cerebellu...

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  9. Co-ordination of voluntary movemtns is done by ………….. . Cerebrum Cer...

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  10. Control of involuntary activities like the beating of the heart, blood...

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  11. The function of cerebrum is to ………… . control of voluntary movement...

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  12. The function of cerebrum is to ………… . control of voluntary movement...

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  13. Hormone …………..stimulates the liver to convert excess blood glucose int...

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  14. Hormone whose secretion increase in emotional disturbances

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  15. …………..controls menstrual cycle and ovulation. Prolactin Oxytocin ...

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  16. …………..stimulates growth of secondary sexual characteristics in men. T...

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  17. ………….occurs through stomata. Translocation Perspiratin Transpirat...

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  18. …………...performs the important role of pushing the water up during the ...

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  19. In plants, gaseous substances are given out by …………… Root pressure ...

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  20. Each kidney has approximately …………..nephtorns 1 lakh 10000 10 lak...

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