Osmosis

The root hair has a semipermeable membrane. What is absorbed by the semipermeable membrane?

• Only water is absorbed.

• The substances the plant needs are absorbed.

• Only minerals are absorbed.

• All substances are absorbed.

Fill in the blank: ________ is the movement of water molecules through a semipermeable membrane from an area of high concentration of water to an area of lower concentration of water.

• Transpiration

• Osmosis

• Photosynthesis

• Absorption

• Respiration

Fill in the blank: Selective permeability is the process of allowing ________substances in.

• only certain

• all

• no

Water moves from the soil into a plant’s root hairs by osmosis.

Fill in the blanks to describe osmosis: Water molecules move

from an area of ________ concentration of water in the soil

to an area of _______ concentration of water in the root hairs.

• high, lower

• low, higher

Tags

NGSS.MS-ESS2-4

Osmosis is vital to a plant for the absorption of a material needed in photosynthesis. What is this material?

• Glucose

• Mineral salts

• Carbon dioxide

• Water

• Oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Fill in the blank: Selective permeability is important for the absorption process in plants. It ensures that the plant absorbs ________ what it needs.

• only

• more than

• less than

Tags

NGSS.MS-LS2-1

Root hairs are adapted for their function by only allowing in certain types of mineral salts according to the needs of the plant. What do we call this adaptation?

• Total permeability

• Selective permeability

• Osmosis

This is a root under a microscope.

What feature of the root shown in the picture makes it well adapted to the absorption of water and minerals?

• Having many leaves

• Having many xylem tubes

• Having many stomata

• Having many root hairs

Why having many root hairs is important for effective absorption?

• It decreases the number of chloroplasts.

• It increases the number of chloroplasts.

• It decreases the surface area.

• It increases the surface area.

Tags

NGSS.MS-LS2-1

Pick the feature that makes the cells of the root hair well suited for the absorption of water and mineral salts.

• Being few root hairs

• Having thick cell walls

• Containing large vacuoles

• Producing chlorophyll

Tags

NGSS.MS-LS1-2