2.3-2.4

Question 1

organisms that can make their own food

Answer 1

autotrophs (producers)

Question 2

organisms that cannot make their own food and must obtain it from other organisms

Answer 2

heterotrophs (consumers)

Question 3

process whereby a plant’s chloroplasts capture the radiant energy of light and convert it into the chemical energy of food

Answer 3

photosynthesis

Question 4

uses oxygen and glucose to produce energy

Answer 4

cellular respiration

Question 5

sugar used for transportation in a plant

Answer 5

sucrose

Question 6

form of sugar that is stored in plants

Answer 6

starch

Question 7

factors that influence photosynthesis

Answer 7

1. amount of available carbon dioxide
2. temperature
3. amount of available water
4. intensity of light striking the leaf

Question 8

examples of light reactions

Answer 8

ATP and NADPH

Question 9

example of dark reactions

Answer 9

glucose

Question 10

pigment in a leaf that produces yellowish-orange colors

Answer 10

carotene

Question 11

layer of cells that cut the leaf from the stem

Answer 11

abscission layer

Question 12

special enzyme that weakens the cell walls of the abscission layer

Answer 12

cellulase

Question 13

the process by which a plant loses water vapor through its leaves and stems

Answer 13

transpiration

Question 14

factors that affect the rate of transpiration

Answer 14

1. humidity
2. wind speed
3. soil water

Question 15

pressure of water inside the guard cells

Answer 15

turgor pressure

Question 16

a high rate of transpiration may produce ______

Answer 16

wilting

Question 17

leaf that has a special design for a special task

Answer 17

special leaf