Biology 10 Chapter 16 Man and his environment - 4

Biology 10 Chapter 16
Man and his environment - 4

1. A network of food chains that are interconnected at various trophic levels is?

a) Food Complex
b) Food web
c) All
d) Food net

2. Charles Elton Developed the concept of?

a) Food Chain
b) Ecological pyramid
c) Food web
d) Ecosystem

3. A representation of energy preset in various trophic level s of a food chain is called as?

a) Ecosystem
b) Food Web
c) Food chains
d) Ecological pyramid

4. In a “Pyramid of Number” what is present in large number?

a) Producers
b) Secondary consumers
c) Tertiary consumers
d) Decomposers

5. Which is the source of materials for all living materials?

a) Environment
b) Air
c) Earth
d) Ecosystem

6. Which pathway note material b/w organism and its environment?

a) Carbon cycle
b) Oxygen cycle
c) Biogeochemical cycles
d) Nitrogen cycle

7. Which are is the principle block of bimolecular?

a) Oxygen
b) Sulphur
c) Carbon
d) Nitrogen

8. Carbon is found as?

a) iv. Pure form
b) iii. Both (i) and (ii)
c) ii. Diamond
d) i. Graphite

9. Major source of carbon is?

a) Graphite
b) CO2
c) Diamond
d) All

10. Major source that brings carbon from atmosphere to living world is?a) Carbon cycle
b) Respiration
c) Photosynthesis
d) Biogeochemical

This is more feedback!

This is the feedback!