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WorksheetsEcology DIA 7
Total questions: 20
Worksheet time: 44mins
___________ is a symbiotic relationship where one species benefits and the other is unaffected
Mutualism
Commensalism
Parasitism
Predation
____________ is a symbiotic relationship in which one species benefits and the other is harmed
Mutualism
Commensalism
Parasitism
Competition
______________ is a type of symbiotic relationship in which both species benefit.
Mutualism
Commensalism
Parasitism
Symbiosis
Mangrove trees are common to the Florida Everglades. The tree roots serve as a place for freshwater oysters to attach when the tide is high, as shown in the picture below. The oysters are protected from predators when attached to the roots underwater. Which of the following relationships is most similar to the mangrove trees and the oysters?
A sea anemone is attached to a hermit crab. When the hermit crab is approached by a predator, it is stung by the sea anemone. In return, the hermit crab provides food scraps for the sea anemone.
A cattle egret feeds on worms that are stirred up by cattle feeding on pastures.
Blacklegged ticks carry a bacteria called Borrelia burgdorferi. When a tick attaches itself to a human it causes Lyme disease.
In the food web image attached, jackals feed on goats and rabbits. What would happen if the population of goats decreased?
The jackal would start feeding on the mice instead.
The jackal would find rabbits to feed on instead.
The jackal would become extinct.
In any food chain, which trophic level contains the largest population?
Producers
Primary consumers
Secondary consumers
Tertiary consumers
In photosynthesis, plants absorb carbon dioxide and water to produce sugar in the form of glucose and oxygen. What is the source of energy used to carry out this reaction?
Methane gas
Mechanical energy
Sugar
Sunlight
Decomposers are organisms that convert dead material such as fallen trees into nutrients that are returned to the soil. These nutrients include nitrogen, potassium, and phosphorus. Which of the following are examples of decomposers?
Vultures, condors and buzzards
Mushrooms, fungi and bacteria
Grass, moss, and ferns
Deer, tortoises and rabbits
Carrying capacity is the maximum population size which can be sustained by an ecosystem given the availability of food, water, habitat and other resources. If these resources are restricted or reduced, what effect does that have on carrying capacity?
There will be no effect on the population
The population will diminish over time
The species will find other ways to survive
Some examples of human effects on the environment include deforestation, urbanization, and pollution. These factors affect populations in various ecosystems regardless of their size.
True
False
Global warming and climate change has been attributed to an increase in carbon dioxide emissions due to the burning of fossil fuels. This impact that humans have on the environment is an example of which of the following?
Urbanization
Deforestation
Air pollution
Overfishing
Which of the following is not a result of irresponsible farming practices
Soil erosion-the wearing away of a field's topsoil due to depletion by wind and water.
Health hazards caused by the use of pesticides.
Clearing of land and depletion of rainforests.
Use of fossil fuels to power passenger cars.
Florida is home to the rare and endangered West Indian manatee. The manatee do not have many natural predators but one of their main threats is loss of habitat caused by coastal development and collisions with motorized boats. This human activity is an example of
urbanization
overfishing
global warming
desertification
