- In a food chain, energy flows in the following direction:
a) producers→ primary consumers→ secondary consumers→ decomposers
b) decomposers→ producers→ primary consumers→ secondary consumers
c) primary consumers→ secondary consumers→ producers→ decomposers
d) producers→ secondary consumers→ primary consumers→ decomposers.
- In a stable ecosystem, a wide variety of
a) producers depend on plants for shelter and camouflage
b) micro-organisms depend on plants for carbon dioxide and nitrogen
c) animals depend on plants for food and oxygen
d) plants depend on micro-organisms for pollination and seed dispersal
- When a jackal kills and eats a rabbit, the jackal is the ...
a) producer
b) prey
c) predator
d) saprophyte
- Which of the following refers to an organism’s whole way of life and the use to which
it puts the available environmental resources?
a) niche
b) habitat
c) community
d) ecosystem
- The five kingdom classification, was suggested by ...
a) Whittaker
b) Linnaeus
c) Darwin
d) Pasteur
- Organisms that live in water are called...
a) terrestrial
b) xerophytes
c) buoyant
d) aquatic
- A giant oil tanker was wrecked at sea. The shallow waters of the coastline provided
a rich source of edible crabs. Oil does not kill the crabs but harm their flesh, making
them inedible and they cannot be sold. Samples of crabs were collected at sites A to
D. The number of crabs is indicated by the size of the circle. The extent of the shaded
part at each site represents the proportion of crabs with diseased flesh after the disaster.
A B C D
Chapter 9. Biospheres to ecosystems 291
