Review Questions
1. True - False items: Say "True" or "False" for the following s
book.
1. There is more energy at the third trophic level tha
2. Ammonium is more preferred by plants than nitrate
3. Plants can release as well as take carbon to and from the atmosphere
4. Denitrifying bacteria are aerobic
5. It is food web, not food chain that actually exists in ecosystem
II. Multiple-choice items: Choose the correct answer from A - D and writ
book.
1. In the food chain: Grass - rat - snake - Eagle, the position of Snake is at
level and
A) 3, 2
trophic level
B) 3,4
C) 4.3
D) 2.3
feeding
2. If the producers in the ecological pyramid have a total of 70, 000 Kcal of energy, which of th
following will be true
A) The secondary consumers would have a total of 7 Kcal energy
B) The primary consumers would have a total of 7000 Kcal energy
C) The secondary consumers would have a total of 70 Kcal energy
D) The tertiary consumers would have a total of 700 Kcal energy
3. The biomass of an ecosystem is
A) The total energy of living and non-living organisms in an ecosystem
B) The total mass of living organisms in an ecosystem
C) The total energy of living organisms in an ecosystem
D) The total mass of living and non-living matter in an ecosystem
4. In nitrogen fixation, nitrogen combines with
A) Carbon B) Hydrogen C) Oxygen D) Water
5. What is the correct term for rising water vapour meeting colder air and turning back in to
water droplets?
A) Condensation B) Dehydration C) Evaporation D) Precipitation