B4

Name 4 ways that organisms can be collected

Using a quadrat, how can we make the estimation size as reliable as possible?

What's a line transect?

What are the sorts of observations we can make from a line transect?

Name 2 species that you could collect in a pooter

Explain the mark-release-recapture technique

What are the problems with the mark-release-recapture technique?

What are the different ways of tagging an animal?

What's the equation for working out the population size?

What's zonation?

How can zonation be shown?

What is the balanced symbol equation for photosynthesis?

What did the ancient Greeks discover about photosynthesis?

What did Van Helmont discover about photosynthesis?

What did Priestley discover about photosynthesis?

What's the glucose used for in plants?

Why is starch used for storage?

How can radioisotopes be used to determine the source of the oxygen release?

What are chloroplasts?

What are the adaptations of upper epidermis?

What are the adaptations of palisade mesophyll layer?

What are the adaptations of spongy mesophyll layer?

What do stoma do?

What the adaptations of the network of vascular bundles (veins)?

What are the adaptations of the guard cells?

What are the three limiting factors of photosynthesis?

Light intensity

Carbon dioxide concentration

Temperature

What does xylem transport in a plant?

What does phloem transport in a plant?

What type of cells of xylem

How does transpiration work?

What are the factors that affect transpiration rate?

What happens when there's an increase in light (in terms of transpiration)?

What happens when there's an increase in wind (in terms of photosynthesis)?

What happens when there's an increase in temperature (in terms of photosynthesis)?

What happens when there's an increase in humidity (in terms of photosynthesis)?

What's diffusion?

How do you calculate the rate of diffusion?

Name 5 things that cells exchange with their environment through diffusion

How can leaves adapt to increase the rate of diffusion?

How can the rate of diffusion be increased?

What is osmosis?

What would happen if you put a plant cell (with a 5% solution in it) into a solution of 1%? What would happen with an animal cell?

What would happen if you put a plant cell (with a 5% solution in it) into a solution of 8%? What would happen with an animal cell?

What would happen if you put a plant cell (with a 5% solution in it) into a solution of 20%? What would happen with an animal cell?

What can help reduce the rate of decay?

What is active transport?

What are the 7 ways of preserving food?

Name 4 plant minerals and their uses

How does canning help preserve foods?

What does nitrogen from nitrates produce?

How does cooling help preserve foods?

What does phosphorous from phosphates produce?

How does freezing help preserve foods?

What does potassium from potassium compounds produce?

How does drying help preserve foods?

What does magnesium from magnesium compounds produce?

How does adding salt/sugar help preserve foods?

What does magnesium from magnesium compounds produce?

How does adding vinegar help preserve foods?

What does a lack of nitrates cause?

What is intensive farming?

What does a lack of phosphate cause?

List 4 chemicals that farmers can use to kill unwanted organisms

What does a lack of potassium cause?

List 4 ways that farmers can increase food production

What does a lack of magnesium cause?

Explain how pesticides can build up and the problem caused

What are detritivores?

Name 2 plants that can be grown by hydroponics

How do detritivores increase the rate of decay?

Give 2 advantages of using hydroponics

How else can the rate of decay be increased?

Give 2 disadvantages of using hydroponics

What's the optimum temperature for bacteria and for fungi?

Explain 3 reasons as to why intensive farming is efficient

Why is it good for bacteria to have an increase in oxygen?

What is an organic farmer?

What will increasing the amount of water do in terms of bacteria and fungi?

List 3 things that organic farmers don't use on their land

What is a saprophyte?

How do fungi digest food outside their cells? What's this type of digestion called?

What is biological control?

Why does biological control not always work?

List 4 other organic methods