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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

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

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

Respiration
Perception of light stimulus
Transpiration
Photosynthesis

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