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Subjects
Science CBSE
Class 10
Control and coordination
Textbook based HOTS

1. Multiple choice questions XXXIII

Exercise condition:

3 m.

1. Phytohormones are

Growth regulators synthesized by plants influencing physiological process
Hormones regulating secondary growth
Hormones regulating flowering
Hormones regulating growth from seed to adult

2. The natural plant hormone were isolated from

Corn germ oil, human urine
Cotton fruit, spinach, rich plant
Avena coleoptile, fungus gibberella
None of the above

3. If tip of seedling is cut off growth as well as bending ceases because it hampers

Perception of light stimulus
Photosynthesis
Respiration
Transpiration

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