In a food chain, consumers eat other organisms. What word is used to describe organisms that make their own food?
What process do plants and algae use to make their own food?
In what sub-cellular part of a plant cell does photosynthesis occur?
What substance from the air do plants need for photosynthesis?
What substance from the ground do plants need for photosynthesis?
What organs do plants use to get water from the ground?
How are roots adapted to getting water from the ground quickly?
large surface area, root hair cells
What energy-storing compound is made in photosynthesis?
Suggest one use for glucose in a plant.
respiration, making other substances
In what sub-cellular part of a plant cell does respiration occur?
What product of photosynthesis is a gas at room temperature?
Plants photosynthesise. Name one other group of organisms that photosynthesise.
algae or cyanobacteria
What reactant in photosynthesis is a gas at room temperature?
What are all the materials that make up an organism known as?
In what subcellular parts of plants does photosynthesis occur?
Where does all the energy originally come from in most food chains?
What polymer inside chloroplasts is made from glucose?
Name the main sugar that is transported around most plants.
What do we mean by the ‘rate’ of photosynthesis?
the speed of the reactions
What is a rate of reaction?
how fast a reaction happens
What do we call something that prevents a rate of reaction increasing?
If light intensity is a limiting factor, what happens to the rate of photosynthesis when it is increased?
The rate increases.
When there is plenty of light and plenty of carbon dioxide, suggest one factor that could be limiting.
temperature or water
What happens to the rate of photosynthesis as a plant is moved further away from a light source?
What relationship is shown by a straight line through the points on a scatter graph?
What sort of linear relationship is shown by a straight line through the origin?
Higher and Triple only- By what law does light intensity vary with distance?
inverse square law
Higher and Triple only- What is light intensity inversely proportional to?
What happens to plants if they do not get enough water to fill their cells?
What term is used to describe the amount of a substance in a certain unit volume?