Tropism

Phototropism is the growth of an organism in response to a light _________.

• light

• dark

• none of the above

• all of the above

Phototropism is most often observed in _________.

• plants

• shrubs

• trees

• none of the above

The cells on the plant that are farthest from the light contain a __________

• light

• hormone

• dark

• all of the above

Chemotropism is defined as the growth of organisms navigated by _________ stimulus from outside of the organism.

• chemical

• physical

• none of the above

• all of the above

It has been observed in bacteria, plants and ________

• fungus

• trees

• fungi

• all of the above

A chemical gradient can influence the growth of the organism in a positive or negative way.

• True

• False

Hydrotropism is a plant's ________________-

• growth response

• response

• none of the above

Hydrotropism is a plant's growth response in which the direction of growth is determined by a ________

• stimulus

• gradient

• none of them

• all of them

A common example is a ______ root

• plant

• tree

• shrub

• all of the above

Thigmotropism is a directional growth movement which occurs as a mechanosensory response to a _______ stimulus

• touch

• light

• chemical

• none of the above