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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान कक्षा ११

Apples are generally wrapped in waxed paper to ______.

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प्रश्न

Apples are generally wrapped in waxed paper to ______.

विकल्प

  • Prevent sunlight for changing its colour

  • Prevent aerobic respiration by checking the entry of O2

  • Prevent ethylene formation due to injury

  • Make the apples look attractive

MCQ
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उत्तर

Apples are generally wrapped in waxed paper to prevent aerobic respiration by checking the entry of O2.

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Plant Growth Regulators - Physiological Effects of Plant Growth Regulators
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अध्याय 15: Plant Growth and Development - Exercises [पृष्ठ ८५]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 11
अध्याय 15 Plant Growth and Development
Exercises | Q 5. | पृष्ठ ८५

संबंधित प्रश्न

Ethylene was discovered by


The affect of apical dominance can be overcome by which of the following hormone ______.


Match the following:

Column A Column B
A. IAA i. Herring sperm DNA
B. ABA ii. Bolting
C. Ethylene iii. Stomatal closure
D. GA iv. Weed-free lawns
E. Cytokinins v. Ripening of fruits

To increase sugar production in sugarcanes, they are sprayed with ______.


ABA acts antagonistic to ______.


Plant growth substances (PGS) have innumerable practical applications. Name the PGS you should use to

Increase yield of sugar cane


Plant growth substances (PGS) have innumerable practical applications. Name the PGS you should use to

Inhibit seed germination


In botanical gardens and tea gardens, gardeners trim the plants regularly so that they remain bushy. Does this practice have any scientific explanation?


Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following terms related to auxins.

Auxin precursors


Auxins are growth hormones capable of promoting cell elongation. They have been used in horticulture to promote growth, flowering and rooting. Explain the meaning of the following terms related to auxins.

Anti-auxins


What is the mechanism underlying the phenomenon by which the terminal/apical bud suppresses the growth of lateral buds? Suggest measures to overcome this phenomenon.


A gardener finds some broad-leaved dicot weeds growing in his lawns. What can be done to get rid of the weeds efficiently?


On germination a seed first produces shoot with leaves, flowers appear later, Why do you think this happens?


Fill in the blanks:

Apical dominance is due to ______.


Fill in the blanks:

______ hormone initiate rooting.


Name a hormone which is gaseous in nature


Name a hormone which induces femaleness in flowers of cucumber


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