REVISION
Ecology Mid Topic Test
Biotic factors - living factors in
ecosystems affecting organisms.
Abiotic factors - non-living factors
affecting organisms – i.e. the physical
environment.
QUESTION 6 – BIOTIC OR
ABIOTIC
1. Humidity
2. Presence of predators
3. Presence of burrow to live in
4. Food availability
5. Social hierarchy
6. Rainfall
7. Competition for mates
8. Air pressure
9. Solar intensity
10. Disease-causing organisms
PHOTOSYNTHESIS
carbon dioxide + water ------> (light energy and chlorophyll) ------>
glucose + oxygen
RESPIRATION
Glucose + oxygen ------> carbon dioxide + water + energy
AEROBIC / ANAEROBIC
Is aerobic respiration with or without oxygen?
With oxygen
Is anaerobic respiration with or without oxygen?
Without oxygen
PARASITISM, MUTUALISM,
COMMENSALISM, PREDATION
Ticks are an example of:
a) Predation
b) Mutualism
c) Commensalism
d) Parasitism
PARASITISM, MUTUALISM,
COMMENSALISM, PREDATION
Ticks are an example of:
a) Predation
b) Mutualism
c) Commensalism
d) Parasitism
PARASITISM, MUTUALISM,
COMMENSALISM, PREDATION
The relationship between a tree and a nesting bird are an example
of:
a) Predation
b) Mutualism
c) Commensalism
d) Parasitism
PARASITISM, MUTUALISM,
COMMENSALISM, PREDATION
The relationship between a tree and a nesting bird are an example
of:
a) Predation
b) Mutualism
c) Commensalism
d) Parasitism
A food chain shows the flow of …………… in an
ecosystem?
a. Energy
b. Meat
c. Producers
d. Food
A food chain shows the flow of …………… in an
ecosystem?
a. Energy
b. Meat
c. Producers
d. Food
Pick the abiotic factor:
a. Temperature
b. Bacteria
c. Rain
d. Both (a) and (c)
Pick the abiotic factor:
a. Temperature
b. Bacteria
c. Rain
d. Both (a) and (c)
All producers get their energy from:
a. Sun
b. Water
c. Dirt
d. Plants
All producers get their energy from:
a. Sun
b. Water
c. Dirt
d. Plants
Animals (consumers) depend on plants (producers) for:
a. Oxygen and water
b. Carbon dioxide and oxygen
c. Food and oxygen
d. Food and carbon dioxide
Animals (consumers) depend on plants (producers) for:
a. Oxygen and water
b. Carbon dioxide and oxygen
c. Food and oxygen
d. Food and carbon dioxide
The main source of energy for a consumer is:
a. Heat from the sun
b. Oxygen in the air
c. Oil and coal
d. Food they eat
The main source of energy for a consumer is:
a. Heat from the sun
b. Oxygen in the air
c. Oil and coal
d. Food they eat
Animal relationships where both animals benefit:
a)Parasitism
b)Commensalism
c)Predation
d)Mutualism
Animal relationships where both animals benefit:
a)Parasitism
b)Commensalism
c)Predation
d)Mutualism
SUSTAINABILITY
• The use of natural resources responsibly so that they
are not depleted.
• Ecosystems can maintain themselves (healthy systems :
air; water; soil; biodiversity).
• No added inputs or outputs
• Recycles resources.
TERRARIUM:
A SUSTAINABLE ECOSYSTEM
A closed (sealed) container with plants and soil, which
has access to light.
Why can living things (microscopic bugs; ants; soil
microbes) live inside a terrarium and not suffocate?
Plants make oxygen through photosynthesis and carbon
dioxide through cellular respiration, which makes a closed
cycle.
Insert picture of photosynthesis and respiration…..
TERRARIUM:
A SUSTAINABLE ECOSYSTEM
If a terrarium is left open, why does it stop being
sustainable ?
The miniature ecosystem dries out due to water
evaporation into the wider atmosphere.
TERRARIUM:
A SUSTAINABLE ECOSYSTEM
How can a plant survive for years in a terrarium without
even being watered ?
The plant recycles water in the terranrium. Water cycle.
Microbes and fungi in the soil produce carbon dioxide for
the plant. Carbon in also stored in the soil. Carbon cycle.