IGCSE Biology Photosynthesis

Which of the following shows the balanced chemical symbol equation for photosynthesis?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

What is the main energy change that happens in photosynthesis?

• chemical --> light

• light --> kinetic

• light --> chemical

• kinetic --> light

Tags

NGSS.HS-LS1-5

Where is chlorophyll found in plant cells?

• cytoplasm

• chloroplast

• mitochondria

• vacuole

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-6

What substance can glucose be converted to, which is the transport carbohydrate of plants?

• starch

• cellulose

• sucrose

• amino acids

What substance can glucose be converted into, which is the energy storage carbohydrate of plants?

• cellulose

• sucrose

• amino acids

• starch

Tags

NGSS.HS-LS1-6

Which substance can glucose be converted to, which strengthens plant cell walls?

• starch

• cellulose

• amino acids

• sucrose

Which of the following organelles would you not expect to be present in onion root cells?

• cell wall

• vacuole

• chloroplast

• mitochondrion

Tags

NGSS.MS-LS1-2

All of the definitions below are descriptions of a 'limiting factor'.

Which of these is the IGCSE Biology definition?

• a factor in the environment that runs out

• something present in the environment in such short supply that it restricts life processes

• a factor in the environment that is in short supply

• something present in the environment in such short supply that it stops life processes

Click on the picture to make it larger.

Which of the following can you conclude about point X from this graph alone?

I. light intensity limits the rate of photosynthesis

II. as light intensity increases, rate of photosynthesis increases

III. CO₂ concentration limits the rate of photosynthesis

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-LS1-5

Click on the picture to make it larger.

Which of the following can you conclude about point Y from this graph?

I. light intensity does not limit the rate of photosynthesis

II. the plant has stopped photosynthesising

III. the rate of photosynthesis could be limited by a shortage of water or CO₂

• I and II only

• I and III only

• II and III only

• I, II and III

Tags

NGSS.HS-LS1-5