F2 1st Term IS WS 09 Answers

1st Term WS 09 Submission date：_____________ Name：______________________ Class & no.：2 _________(     )

7.4       How do green plants obtain energy?

D. Importance of photosynthesis to animals (P.46-47)

i      Words to know:

	English term	Write the words again	Chinese term
1	Photosynthesis	Photosynthesis	光合作用
2	Producers	Producers	生產者
3	Consumers	Consumers	消費者
4	Food chains	Food chains	食物鏈

i      Matching:

Photosynthesis	•	is the process which converts light energy into chemical energy.
Producers	•	provide food for all animals either directly or indirectly.
Consumers	•	are the animals which feed on plants or other animals.
Food chains	•	show the feeding relationships between plants and animals.

i      Fill in the blanks:

1        Green plants can make their own food by photosynthesis. In this process,

           light energy is converted into chemical energy which is stored in starch / food.

2        Green plants are producers because they can make their own food and provide food for all animals either directly or indirectly.

3       Animals cannot make their food and must feed on plants or other animals, so they are called consumers.

4        The feeding relationships between plants and animals can be shown by food chains.

i      Short questions:

1       State the producer(s).                    Grass

2       State the consumer(s).        Sheep, lion

3       Draw a food chain to show the feeding relationship between the above living things.

Grass à sheep à lion

4        What is the importance of photosynthesis to the environment?

Photosynthesis provide food for all animals either directly or indirectly, and is important in balancing the amounts of carbon dioxide and oxygen in nature.