Tropisms and Turgor Pressure

Tropism is a growth or movement of

a plant in response to

• a response

• a stimulus

• a reaction

• an effect

Tags

NGSS.MS-LS1-5

Geotropism is a type of tropism where the

plants growth response to

• light

• touch

• gravity

• water

How is phototropism beneficial to a plant?

• It helps the plant to get the most amount of light possible.

• It helps the plant by providing support.

• It helps the plant to get nutrients and water that are deep in the soil.

• It helps the plant to grow a deep root system.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-1

Which of the following tropisms are the same as geotropism?

• thigmotropism

• hydrotropism

• phototropism

• gravitropism

A student conducts an experiment where he

places a light source below a plant. Over a

three week time period he observes the

plant’s growth. Which of the following would

he observe at the end of the three weeks.

• Roots would grow up out of the pot and then down towards the light.

• The plant stem would grow up and roots would grow down.

• The plant would start to bend over and grow downwards toward the light.

• The plant would wilt and die.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

Over an extended period of time a student observes how a particular plant comes in contact with a metal pole and begins to wrap around the pole and grow upwards. Which type of tropism is the plant responding to?

• geotropism

• hydrotropism

• phototropism

• thigmotropism

As a plant grows toward the sunlight to gain maximum energy through photosynthesis, it is responding to a

• external stimulus

• internal stimulus and heliotropism

• heliotropism

• external stimulus and heliotropism

Tags

NGSS.MS-LS1-5

How is a plant responding to thigmotropism beneficial to a plant?

• It provides energy for the plant.

• It provides support for the plant.

• It provides nutrients for the plant.

• It provides water for the plant.

Which of the following would most likely happen if plants did not respond to geotropism?

• Plant roots would grow in every direction.

• Plant roots would continue to grow straight down.

• Plant stems would grow straight up.

• The plant would grow larger than usual.

Tags

NGSS.MS-LS1-5

Which type of tropism?

• phototropism

• thigmotropism

• heliotropism

• geotropism (Gravitropism)