Tropisms and Hormones

Response to a stimulus in plants is called ________.

• touch

• gravity

• light

• tropism

A __________ is something that evokes a response.

• stimulus

• response

• tropism

Tags

NGSS.MS-LS1-8

The growth of shoots and roots is controlled by a group of hormones called _________.

• auxins

• ethylene

• stimulus

• tropism

Roots growing down into the earth is an example of ___________.

• phototropism

• geotropism

• thigmotropism

A growth movement away from a stimulus is called _________.

• positive tropism

• positive phototropism

• negative tropism

Growth movement of a plant towards touch is called __________.

• thigmotropism

• geotropism

• phototropism

Which of the following is not a stimulus that plants respond to?

• touch

• light

• wind

• earth/gravity

Hormones are ________________.

• tissues

• chemical messengers

• cells that carry oxygen

• molecules in the air

Which hormone allows plants to perform phototropism?

• cytokinins

• ethylene

• gibberellins

• auxins

Where are auxins made?

• roots

• stem tips

• leaves

• flowers