Plants

Question 1

Define osmosis:

Answer 1

Diffusion of water through a partial permeable membrane

Question 2

Define diffusion:

Answer 2

Movement of a substance from high to low concentration until equal concentrations

Question 3

Define active transport:

Answer 3

Diffusion against the concentration gradient - low to high - requires energy

Question 4

What are plant cells normally:

Answer 4

Turgid

Question 5

What do plant cells become with nearly enough water:

Answer 5

Flaccid

Question 6

What do plant cells become without enough water:

Answer 6

Plasmolyzed

Question 7

Where does diffusion occur:

Answer 7

Alveoli (oxygen and carbon dioxide)

Villi (small soluble food particles)

Question 8

Where does osmosis occur:

Answer 8

Root hair cells

Large intestine

Question 9

Where does active transport occur:

Answer 9

Root hair cells (minerals)

All products of digestion

Question 10

Factors that affect diffusion:

Answer 10

Temperature, concentration, surface area

Question 11

Factors that affect osmosis:

Answer 11

Temperature, concentration, surface area

Question 12

Factors that affect active transport:

Answer 12

Temperature, surface area

Question 13

What are vascular bundles:

Answer 13

Bundles of small tubes - xylem and phloem tubes

Question 14

What are xylem tubes:

Answer 14

Dead cells (the ends have broken down) that have thick, rigid walls

Question 15

What are phloem tubes:

Answer 15

Live cells that sieve the solution that passes through them, with companion cells to assist active transport

Question 16

There will be some stuff on:

Answer 16

Stomata

Question 17

Where does the transpiration stream come from and go:

Answer 17

Water evaporates through the stomata
Water leaves the xylem through osmosis
Water is pulled up the xylem to replace the lost water
Water is pulled in through the roots to replace the previous water through osmosis