Parts of an Ecosystems
An ecosystem contains both ____ and ______ components.
Living and nonliving
Carnivores eat _____, while herbivores eat ______
animal prey
plants or algae
Resource abundance can _______ population growth
promote
Name an example of an abiotic factor
Which symbiotic relationship benefits BOTH organisms?
Mutualism
All the plants from a forest ecosystem causes the deer population to decline dramatically. Explain why this happened.
Living and nonliving components depend on each other for survival
Organisms that seek the same limited resources will _________ with each other
compete
A forest has plenty of water, sunlight, and nutrients in the soil. What could still limit the deer population of this area?
Predators, disease, and competition for food are biotic factors that can limit population growth
Identify whether each example is an organism, population, community, or ecosystem
All the ants living in one ant hill
Population
A tick feeding on a dog is an example of
Parasitism
A pond containing fish, algae, frogs, water, rocks, and sunlight is a:
A. Population
B. Ecosystem
C. Community
D. Organism
B. Ecosystem
At least one species benefits from the relationship, while the other species __________, _________, ________.
may benefit, be harmed, or be unaffected.
A scientist observes that a rabbit population decreases significantly after a harsh winter. Which factor most directly caused this population decline?
A) An increase in abiotic resources like sunlight
B) A decrease in biotic factors like predators
C) A decrease in abiotic resources like food and shelter
D) An increase in the rabbit's reproductive rate
C) A decrease in abiotic resources like food and shelter
Identify whether each example is an organism, population, community, or ecosystem.
A desert with snakes, cacti, sand, and sunlight
Ecosystem
In commensalism is when
One benefits and the other is unaffected
A single rabbit living in a field is an example of a
A. Population
B. Community
C. Organism
D. Ecosystem
C. Organism
A scientist observes that when the population of rabbits increases in a forest, the population of foxes also increases a few months later. What kind of relationship is this?
Predator/Prey
A population of bacteria in a petri dish grows rapidly when given plenty of nutrients and space. After several days, the population growth slows and stops. Why did growth stop?
Resources became depleted, and waste products accumulated, limiting further growth
Identify whether each example is an organism, population, community, or ecosystem.
One deer in a forest
Organism
Which statement about symbiosis is TRUE?
A. All symbiotic relationships are harmful
B. Symbiosis only happens in oceans
C. Symbiosis is a close relationship between organisms
D. Only plants can have symbiotic relationships
C. Symbiosis is a close relationship between organisms
All the oak trees in a forest make up a:
A. Community
B. Population
C. Organism
D. Biome
B. Population
A remora fish attaches itself to a shark and eats leftover food scraps from the shark's meals. The shark is neither helped nor harmed by the remora's presence. What type of symbiotic relationship is this?
Commensalism, because one organism benefits while the other is unaffected
A wildlife manager wants to increase the population of an endangered bird species. What actions could the wildlife manager do to increase the population?
Restore the bird's habitat to provide adequate food, nesting sites, and shelter
Identify whether each example is an organism, population, community, or ecosystem.
All the fish, turtles, insects, and plants in a lake
Community
Which of the following is NOT a symbiotic relationship?
A. Tick and deer
B. Bee and flower
C. Shark and remora fish
D. Hawk catching a mouse
D. Hawk catching a mouse
It's predator/prey