Unit 6 - Photosynthesis Flashcards
the gas in the air used by plants to make food. It is produced during respiration, by burning fossil fuels or by acids reacting with metal carbonates.
carbon dioxide
a gas in the air that is produced by plants, used during aerobic respiration and during combustion reactions
oxygen
a simple sugar molecule
glucose
the process by which energy from sunlight, carbon dioxide and water are used by green plants to produce glucose and oxygen
photosynthesis
a large molecule made by plants as a form of food storage
starch
orange coloured liquid used to test for starch
iodine
green pigment in plants used in photosynthesis
chlorophyll
waxy, waterproof, protective outer layer of a leaf
cuticle
single-cell thick transparent layer in the upper surface of a leaf
epidermis
a long narrow plant cell, packed with chloroplasts and found in the upper part of the leaf
palisade cell
a plant cell with a large surface area, large spaces around it and found in the lower part of the leaf
spongy cell
a very small hole
pore
tiny pores on the underneath surface of a leaf through which gases can move in and out
stomata
leaf cells either side of each stoma which control its opening and closing
guard cells
a measure of speed or the number of times something happens in a set amount of time
rate
the number of particles packed in a certain volume
concentration
movement of water in plants as it is taken up through the roots and released from the leaves as water vapour
transpiration
cells that join to form a pipeline in the stem of the plant through which water and minerals travel
xylem cells
specialised plant cells on roots
root hair cells
lack of something such as a nutrient
deficiency
chemical put on soil to increase soil fertility and allow better growth of crop plants
fertiliser
waste organic material
manure
energy from chemicals is used to make food
chemosynthesis
forms on the sea floor where there is volcanic activity
hydrothermal vent
