Review 7.13A

Which of the following is an example of a plant responding to the external stimulus of light?

• A seedling growing towards a sunny window.

• Plant roots growing down into the soil.

• Flowers producing nectar to attract bees.

• A potted plant wilting when it dries out.

A student places a plant in a dark room next to a growth lamp, while providing sufficient water and nutrients to ensure the plant’s growth and survival. The plant will likely respond by -

• bending towards the lamp.

• wilting and eventually dying.

• shedding all of its leaves.

• increasing its rate of photosynthesis.

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NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

Why is transpiration necessary in plants?

• plant can maintain equilibrium

• to keep the plant from becoming over hydrated

• to provide the entire plant with nutrients

• All of the above

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

What is transpiration?

• the orientation of a plant or other organism in response to light, either toward the source of light

• the physiological loss of water in the form of water vapor, mainly from the stomata in leaves

• the growth of the parts of plants with respect to the force of gravity

• the growth or turning of plant roots toward or away from moisture.

What is phototropism?

• the orientation of a plant or other organism in response to light, either toward the source of light

• the physiological loss of water in the form of water vapor, mainly from the stomata in leaves

• the growth of the parts of plants with respect to the force of gravity

• the growth or turning of plant roots toward or away from moisture.

Which of the following is an example of a plant responding to the external stimulus of gravity?

• A seedling growing towards a sunny window.

• Plant roots growing down into the soil.

• Flowers producing nectar to attract bees.

• A potted plant wilting when it dries out.

What is geotropism?

• the orientation of a plant or other organism in response to light, either toward the source of light

• the physiological loss of water in the form of water vapor, mainly from the stomata in leaves

• the growth of the parts of plants with respect to the force of gravity

• the growth or turning of plant roots toward or away from moisture.

Geotropism is the growth of plants in response to ________.

• A.sunlight

• B. soil

• C. nutrients

• D. gravity

What causes the roots to grow downward?

• A . Gravity exerts a downward force on the roots.

• B. Light exerts a downward force on the roots.

•  C. Minerals in the soil apply a downward pushing force on the roots.

• D. Air in the soil applies a downward pushing force on the root

Tags

NGSS.MS-LS1-5

NGSS.MS-PS2-4

A scientist designs an experiment to investigate the effect of temperature on transpiration. He puts two identical plants in potometers, which are tools used to measure water loss from plants. He fills each potometer with an equal amount of water and places the first potometer in a room that is 11°C and the second potometer in a room that is 33°C. The picture shows his experiment. He measures the amount of water left in the potometers after one day. Which potometer will have less water? Explain your answer.

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NGSS.MS-LS1-5