BTS 9 General Photosynthesis

Match the parts of the plant.

a

b

c

roots

stem

leaves

Label the picture.

b

c

d

e

a

water

carbon dioxide

sunlight

oxygen

starch

Release

• 
• 

Match the following verbs with their participles.

• made

• produce

• release

• take

• taken

• release

• produced

• make

When plants respire, carbon dioxide……………………..  (take in).

• is take in

• is taken in

• is taking in

Answer explanation

The correct answer is 'is taken in'. In the context of the question, when plants respire, they absorb carbon dioxide from the atmosphere. Thus, the correct phrase to use here is 'is taken in', indicating the action of the plants.

When plants respire, oxygen …………………….. (release) into the air.

• is release

• is released

• is releasing

Answer explanation

The correct answer is 'is released'. In the context of the question, the correct grammatical form to fill in the blank is the passive form 'is released'. This is because the action (releasing oxygen) is being performed by the plants, not received by them.

Energy …………………….. (make) by the plant.

• is make

• is making

• is made

Answer explanation

The correct answer is 'is made'. In the context of the sentence, we need a passive voice verb, as the action (making energy) is performed by the plant, not the energy itself. 'is made' fits perfectly in this context, implying that the energy is produced by the plant.

Water …………………….. (take up) by plant roots.

• is taken up

• is taking up

• is take up

Answer explanation

The correct answer is 'is taken up'. This is because in this context, the phrase 'is taken up' best fits the given question. The process in which water is absorbed by the plant roots is described in passive voice and in present tense. Thus, 'is taken up' is the appropriate choice.

Reorder the following:

• Sugar

• is

• produced

• in the

• plant.

Organize these options into the right categories

• Sunlight

• is needed

• for

• photosynthesis

• to happen.