Levels of organisation
What is the smallest unit of life
cell
Main gas released by autotrophs during photosynthesis
Carbon dioxide
plant tissue that transports sugars
phloem
Main waste gas produced during cellular respiration
carbon dioxide
Organ where digestion begins in animals
Mouth
What are a group of similar cells called?
tissues
Process that autotrophs use to convert light energy into food
photosynthesis
Fluid that circulates in closed animal circulatory systems
blood
Leaf pores for gas exchange
stomata
Plant organ absorbing minerals and water
Root
Structure composed of different tissues
organ
What is the organelle needed for photosynthesis?
chloroplast
What are the tiney blood vessels called where exchange occurs?
capillaries
Plant structure that opens or closes stomata
guard cells
Organ where water is absorbed from undigested food
large intestine
What is the highest level of organisation in the body
organ system
Main energy source for photosynthetic autotrophs
sunglight
Name the heart chamber that pushes oxygen rich blood into the rest of the body
Left ventricle
Exchange of gases in leaves occurs mainly in this leaf tissue
spongy mesophyll
Process breaking down food using enzymes
chemical digestion
What is the process by which cells become specialised?
Differentiation
What is the main product in photosynthesis?
Glucose
Structure in veins that prevents backflow of blood
Valves
Protein in RBC's that transports oxygen
Haemoglobin
Enzyme that breaks down starch in saliva
Amylase