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Worksheets4.2 Ecosystem Dynamics
Total questions: 18
Worksheet time: 11mins
Which type of symbiosis involves both species benefitting? +/+
Mutualism
Commensalism
Parasitism
Which type of symbiosis involves one species benefitting while the other is harmed? +/-
Mutualism
Commensalism
Parasitism
Which type of symbiosis involves one species benefitting while the other is unaffected? +/0
Mutualism
Commensalism
Parasitism
Which type of ecological succession begins on bare rock (no soil)?
Primary
Secondary
Both
Which type of succession would occur here?
Primary
Secondary
Both
Lichen is a pioneer species in which type of succession?
Primary
Secondary
Both
The first species to populate an area after a disturbance is called:
A pioneer species
A pilgrim species
A founder species
A primary species
Both the lion and the cheetah eat some of the same prey in this ecosystem. Two organisms going after the same resource is known as
Mutualism
Parasitism
Competition
Commensalism
This photo is showing the same ecosystem in 2 scenarios: one with the sea otter and one without the sea otter. In the ecosystem without the sea otter, the ecosystem dynamics are completely changed. What term best describes the sea otter?
Niche
Climax community
Pioneer species
Keystone species
What is a habitat?
The natural home or environment of an animal, plant, or other organism.
The interrelationship of a species with all the biotic and abiotic factors affecting it.
A biological community of interacting organisms and their physical environment.
The natural home or environment of non-living organisms.
What is a niche?
The place or function of a given object within its ecosystem.
The place or function of a given organism within its ecosystem.
The natural home or environment of an animal, plant, or other organism.
The natural home or environment of an object.
Humans have been using increasing amounts of land to build houses and construct roadways. Which statement below describes how this expansion affects organisms from these areas?
Species are quickly adapting to new habitats and different niches
The loss of habitat is reducing the population size of other animals
Carnivores are being forced to eat vegetation in lieu of meat
Animals are developing new habits that compliment human life
Deforestation has which of the following effects on the biomass and biodiversity of the plant and animal community in these ecosystems?
biomass and biodiversity both increase
biomass and biodiversity both decrease
biomass increases but biodiversity decreases
biomass decreases but biodiversity increases
TRUE or FALSE:
The environment is always changing.
True
False
What is the definition of biodiversity
the variety of plant and animal life in the world or in a particular habitat
animals
plants
any place that has more than one hundred plants and animal species
