The bending of the stem of a plant towards a source of light is caused by the action of a phytohormone known as:

Most of the plant hormones promote plant growth. A plant hormone which inhibits growth is:

The movement of a shoot towards light is:

Which of the following plant part exhibits negative phototropism?

Which of the following are not tropisms?

(i) growing of pollen tube in response to a sugary substance

(ii) folding up of leaves of sensitive plant in response to touch

(iii) winding of tendril around a support in response to touch

(iv) opening up of the leaves of a daisy flower in response to light