Q3 of 86 Page 150

The root of the plant is __________.

i) positively phototropic but negatively geotropic


ii) positively geotropic but negatively phototropic


iii) negatively phototropic but positively hydrotropic


iv) negatively hydrotropic but positively phototropic

Root of plant bends towards earth’s gravity so it is positively geotropic but it bends away from light so it is negatively phototropic. Roots of plants bend towards water so it is positively hydrotropic.

More from this chapter

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1

The bending of root of a plant in response to water is called __________.

 2

A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The top part of the seedling bends towards the burning candle. This is an example of ____________.

 4

The plant part which exhibits negative geotropism is __________.

 5

The non-directional movement of a plant part in response to temperature is called ________.