GAS EXCHANGE-FLOWERING PLANTS

Question 1

WHEN PLANTS PHOTOSYNTHESIS THEY…

Answer 1

USE UP CO2 FROM THE ATMOSPHERE AND PRODUCE O2 AS A WASTE PRODUCT

Question 2

WHEN PLANTS RESPIERE THEY…

Answer 2

USE UP O2 AND PRODUCE CO2 AS A WASTE PRODUCT

Question 3

PLANTS WASTE PRODUCTS ARE LOST THROUGH LITTLE HOLES CALLED (…)

Answer 3

STOMATA

Question 4

NET EXCHANGE OF GASES DEPENDS ON (…)

Answer 4

LIGHT INTENSITY

Question 5

PHOTOSYNTHESIS ONLY HAPPENS DURING THE (…) BUT PLANTS NEED TO RESPIRE ALL THE TIME

Answer 5

DAY

Question 6

DURING THE DAY PLANTS MAKE MORE (…) BY PHOTOSYNTHESIS THAN THEY USE IN RESPIRATION

Answer 6

OXYGEN/

Question 7

IN DAYLIGHT PLANTS RELEASE (…)

Answer 7

OXYGEN

Question 8

PLANTS USE UP MORE (…) THAN THEY PRODUCE

Answer 8

CARBON DIOXIDE

Question 9

AT NIGHT PLANTS TAKE IN (…) AND RELEASE (…) JUST LIKE US

Answer 9

OXYGEN/CARBON DIOXIDE

Question 10

LEAVEDS ARE BROAD SO THERE IS A (…)

Answer 10

LARGFE SURFACE AREA FOR DIFFUSION

Question 11

LEAVES ARE (…) SO (…) ONLY HAVE TO TRAVEL A SHORT DISTANCE TO REACH THE CELLS WHERE THEY ARE NEEDED

Answer 11

THIN/GASES

Question 12

THERE ARE (…) INSIDE THE LEAF, TO LET GASES LIKE CARBON DIOXIDE AND OXYGEN MOVE EASILY BETWEEN CELLS (ALSO INCREASES SURFACE AREA)

Answer 12

AIR SPACES

Question 13

THE LOWER SURFACE IS FULL OF LITTLE HOLES CALLED (…)

Answer 13

STOMATA

Question 14

WHAT DOES STOMATA DO

Answer 14

IT LETS GASES LIKE CO2 AND O2 DIFFUSE IN AND OUT

Question 15

STOMATA ALSO ALLOW WATER TO ESCAPE WHICH IS KNOWN AS (…)

Answer 15

TRANSPIRATION

Question 16

STOMATA BEGINS TO CLOSE WHEN IT GETS DARK, WHAT HAPPENS THEN

Answer 16

IT DOESNT NEED TO OPEN TO LET OXYGEN IN SINCE PHOTOSYNTHESIS DOESNT WORK AT NIGHT

AND WATER CANT ESCAPE, WHICH STOPS THE PLANT DRYING OUT

Question 17

WHAT ARE GUARD CELLS AND WHAT DO THEY DO

Answer 17

GUARD CELLS ARE THE ONES IN CONTROL OF THE CLOSING AND OPENNING OF STOMATA, THEY DO THAT BY CHANGING IN SHAPE AND VOLUME (THEY INCREASE THEIR VOLUME TO OPEN AND DECREASE IT TO CLOSE)