Q5 of 86 Page 150

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

The non-directional movement of plant part in response to temperature is called thermonasty. The position of flowers and leaves of plants changes in response to temperature of surroundings which are called thermonastic movements.

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3

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

 4

The plant part which exhibits negative geotropism is __________.

 6

Dandelion flowers open the petals in bright light during the day time but close the petals in dark at night. This response of Dandelion flowers is called ___________.

 7

During photosynthesis plants exhale ________.