Science notes

Class: 8th Science Chp. 18 Ecosystems (Notes)

1.Complete the following by using the correct option:

Question a.
Air, water, minerals, soil are ………….. factors of an ecosystem. (physical, organic, inorganic)
Answer:
Air, water, minerals, soil are physical factors of an ecosystem.

Question b.
River, ponds, ocean are …………. ecosystems, (land, aquatic, synthetic)
Answer:
River, ponds, ocean are aquatic ecosystems.

Question c.
Man is ………….. in an ecosystem. (producer, consumer, decomposer)
Answer:
Man is consumer in an ecosystem.

2. Match the following:

Question a.


Producer Ecosystem


1. Cactus a. Forest


2. Aquatic plants b. Creek


3. Mangroves c. Aquatic


4. Pine d. Desert


Answer:


Producer Ecosystem


1. Cactus d. Desert


2. Aquatic plants c. Aquatic