IB Biology - Ecology Test Review

25 Questions | By Mjvalentin | Last updated: May 10, 2018

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IB biology can be a bit challenging for anyone taking it. Are you one of them and have read up on the ecology topic and now feel certain you have a good understanding of it? Why don’t you take the trivia below and brush up on the topic? All the best!

Questions and Answers

1.

Match the following words to the correct definition.
- A. Ecology
- A.
- B. Species
- B.
- C. Population
- C.
- D. Autotroph
- D.
- E. Heterotroph
- E.
- F. Mixotrophic
- F.
- G. Consumer
- G.
- H. Detritivore
- H.
- I. Saprotroph
- I.
- J. Community
- J.
- K. Habitat
- K.
- L. Ecosystem
- L.
2.

Sunlight is the initial source of energy in an ecosystem
- A.
  
  True
- B.
  
  False
3.

Light energy is converts chemical energy using oxygen compounds by photosynthesis.
- A.
  
  True
- B.
  
  False
4.

Chemical energy flows through the food chain by the means of killing
- A.
  
  True
- B.
  
  False
5.

The food chain is as follows from beginning to end:Producers/Primary Consumers/Secondary Consumers/Tertiary Consumers/etc.
- A.
  
  True
- B.
  
  False
6.

Peat is partially decomposed plant materials and can be used as a fossil fuel.
- A.
  
  True
- B.
  
  False
7.

Organic matter: heated to its ignition temperature when oxygen is present will explode and turn into gas.
- A.
  
  True
- B.
  
  False
8.

Energy released from [Blank] compounds by [Blank] is used in living organism and converted to [Blank].
9.

[Blank] is the total mass of a group of organisms.
10.

Only [Blank] of energy will be passed to the next trophic level on the food chain.
11.

An example of carbon fixation would be [Blank]
12.

Partially decomposed peat when put under extreme [Blank], [Blank] , and [Blank] from above sediments can be transformed into coal.
13.

The photosynthesis equation is:
- A.
  
  Glucose + Oxygen = Carbon Dioxide + Water + Energy
- B.
  
  Glucose + Oxygen = Energy
- C.
  
  There is no equation
- D.
  
  Oxygen + Carbon Dioxide = Water
14.

Living organisms cannot perform which conversion:
- A.
  
  Muscle contractions
- B.
  
  Chemical to electrical energy
- C.
  
  Chemical energy to cool energy
- D.
  
  Nerve impulses
15.

Heat resulting from cellular respiration makes an organism warmer.Cold-blooded organisms can become ______ active.
- A.
  
  Less
- B.
  
  More
- C.
  
  Equally as
16.

How is Water Vapour created?

Discuss
- A.
  
  Precipitation
- B.
  
  Evaporation
- C.
  
  Absorbing
- D.
  
  Combustion
17.

How is Water Vapour removed?
- A.
  
  Precipitation
- B.
  
  Evaporation
- C.
  
  Absrobing
- D.
  
  Combustion
18.

What causes ozone depletion?

Discuss
- A.
  
  Burning of fossil fuels
- B.
  
  Forest/grassland fires
- C.
  
  Combustion
- D.
  
  All of the above
19.

Chlorofluorocarbons also known as _____ ,contain ____ atoms which can destroy ozone molecules resulting in holes in the ______ layer in the stratosphere.
- A.
  
  CFC, Cl, ozone
- B.
  
  ChFlCb, Cl, O3
- C.
  
  Cl, O3, CFC
- D.
  
  O3, CFC, ozone
20.

Carbonic Acid is made up of:
- A.
  
  Carbon Dioxide
- B.
  
  Water
- C.
  
  Oxygen
- D.
  
  Carbon
21.

Methanogenesis is carried out in many anaerobic environments such as:
- A.
  
  Mud along shores in bed of lakes
- B.
  
  Swamps
- C.
  
  Guts of termites and ruminant animals
22.

Methane is oxidized by:
- A.
  
  CO
- B.
  
  CO2
- C.
  
  H2O
- D.
  
  O2
23.

_____ and _____ have exoskeletons made out of Calcium Carbonate.
- A.
  
  Crabs
- B.
  
  Turtles
- C.
  
  Molluscs
- D.
  
  Coral Reefs
24.

The 2 most significant greenhouse gases are:
- A.
  
  Water Vapour
- B.
  
  Methane
- C.
  
  Carbon Dioxide
- D.
  
  Ethanol
25.

The 3rd and 4th most significant green house gases are:
- A.
  
  Water Vapour
- B.
  
  Carbon Dioxide
- C.
  
  Methane
- D.
  
  Nitrous Oxide

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