Worksheets3rd Nine weeks exam
Total questions: 152
Worksheet time: 4hrs 7mins
Looking at the chart below what type of organism is the Alaskan brown bear?
Carnivore
Herbivore
Omnivore
Decomposer
Which of the following has the largest population in the Indian River Lagoon system?
Crab
Egret
Flounder
Phytoplankton
In the Indian River Lagoon System, many organisms compete for food. Which organism in the food web competes with the egrets for food?
Clam worm
Crab
Flounder
Heron
How much energy will be available for the flounder if the plankton at the bottom of this pyramid is able to produce 10,000 kcal of energy from the photosynthesis?
1000
100
10
1
What is the primary source of energy for the ecosystem pictured above?
Grass and Green plants
Hawks and Deer
Tadpoles and Fish
Sun
Observe the food chain below. What would be the result of disease killing off most of the mouse population?
All populations would be relatively unaffected
The grasshoppers would become extinct
The grasshopper population would decrease; the owl population would increase
The grasshopper population would increase and the owl population would decrease
Which of the following is a tertiary consumer from the food web shown?
Kite
Owl
Jackal
Tree
Which two organisms compete for the rabbit for energy?
Mouse and Tree
Owl and Goat
Wildcat and Jackal
Lion and Jackal
A new species of hawk that feeds on snakes was introduced to this ecosystem. What is going to happen to the Kite population now that they are competing for snakes with the hawk?
The kite population will increase.
The hawks will have no influence on the population of kites because they have more food to eat.
The kite will become better adapted to the environment.
The kite population will decrease because they are now competing for food with the hawk.
In this food web, which of the following organisms eats the largest variety of different producers?
Mouse
Grasshopper
Dragonfly
Butterfly
Which type of interaction exists between shrimp and blue crabs in this food web?
Blue crabs prey on shrimp.
Shrimp compete with blue crabs for food.
Shrimp help blue crabs filter polluted water.
Shrimp decompose matter for blue crabs.
An autotroph can also be called a
animal.
consumer.
heterotroph.
producer.
An example of a producer is a
fungus.
animal.
plant.
person.
An example of a consumer is a(n)
oak tree.
dog.
algae.
phytoplankton.
The levels of nourishment in a food chain are called
pyramids of numbers.
trophic levels.
food phases.
biomagnitudes.
In the food chain pictured, what type of organism is the bird?
producer
primary consumer
secondary consumer
tertiary consumer
About how much energy is LOST when an organism consumes another organism from a different trophic level?
10%
90%
50%
25%
Where do producers get their energy from?
Decomposers
Primary Consumers
Secondary Consumers
The Sun
What is another word for producer?
Heterotroph
Autotroph
What is another word for consumers?
Heterotroph
Autotroph
If the snake has 50 kJ of energy, how much does the grass have?
50
500
5000
5
If the grass has 4360 kJ of energy, how much energy does the owl get?
436
4.36
46
4360
If the rabbit has 240 kJ of energy, how much does the snake get?
240
2400
2
24
Which best explains biodiversity?
The population of a species in an ecosystem
The variety of species in an ecosystem
The study of life
The difference number of biomes on Earth
Which ecosystem has the greatest amount of biodiversity?
Polar regions
Deciduous forest
Tundra
Tropical rainforest
Why do these two microhabitats located in the same biome support different varieties of life?
Because the climates are very different in each location.
Different animals prey on the different insects.
Because the microhabitats each have different resources.
Because the tree is dead, it can't support life.
Which of the following situations contributes to stability in an ecosystem?
increase in biodiversity
decrease in biodiversity
extinction of a population from the ecosystem
removal of many populations of organisms
Some plants have a waxy thick coat with thorns. Where would you find this type of plant?
Grassland
Tundra
Desert
Forest
Which food web would be likely to survive if a one species of plant were lost due to disease?
Food Web 2, the feeding relationships are less complex
Food Web 1, most herbivores can eat other organisms.
Food Web 1, has the greater number of 1st level consumers.
Food Web 2, a greater number of predators competing for food
The ocean ecosystem has a high sustainability because of
strong, persistent currents
predator/prey relationships
green plants growing on the bottom
the large variety of different organisms
Why does biodiversity contribute to a habitat’s sustainability?
The more plants and animals in a habitat, the greater the biomass, which is how habitats store energy.
The greater the number of species, the more competition there is for food between predators, which sustains their populations.
Changing conditions that harm one species leave other species to survive and perhaps even thrive.
Landforms change shape less frequently when there is a greater number of species using the land.
1. The ecosystem with the greatest sustainability will be the one that has the –
greatest variety of different organisms
highest annual precipitation
lowest population of harmful insects
fastest growing season of green plants
Describe how biodiversity contributes to sustainability.
As biodiversity increases, sustainability decreases
As biodiversity increases, sustainability increases
As biodiversity decreases, sustainability increases
There is no relationship between biodiversity and sustainability
Which ecosystem is more sustainable?
Community 1
Community 2
Same
Which list does NOT include biotic factors?
elephants, zebras, acacia trees, bushes, bacteria
rocks, water, temperature, sun, clouds
algae, seaweed, fungi
decayed zebra, bird eggs, poo from a kangaroo
Which represents community level of organization?
lions, zebras, giraffes, trees
lions
lions, zebras, sunlight, trees, rocks
lions and their cubs
Which represents a community?
a
b
c
d
Which of the following shows the correct order of the pictures from the LOWEST (smallest) to the HIGHEST (largest) level of organization?
c < b < d < a
b < c < a < d
c < b < a < d
a < d < b < c
A beautiful butterfly.
Water, Fish, Turtles, Oxygen, Rocks and Moss interacting in a river system.
All speckled sting-ray that live in the Pacific Ocean
Chicken, Cow, Grass, Buffalo, and Mouse living on farmland.
The fox family represents a (n)--
organism
population
community
ecosystem
The sweet potato is a common crop plant found in most warm areas of the world. The plant rarely flowers and more rarely makes seeds. However, the roots and potato vines spread rapidly, and new plants are easily grown from the roots and vines of old plants. Some scientists would like to grow new types of sweet potatoes that parasites will not attack. Which of these processes is most difficult in developing new types of sweet potatoes?
planting root stocks
cutting vines
removing parasites
selective breeding
A dog breeder sells puppies to owners who like to show dogs in competitions in which the dogs usually perform tricks and obey commands. Many generalized behavioral traits can be passed down over generations of dogs. Which characteristic would a breeder of dogs look for when selecting parent dogs to breed?
aggression
obedience
nervousness
size
A bison has teeth that are adapted for eating grasses. Suppose a disease were to kill off all the grasses in a region where the bison live. What would likely happen to the bison population?
They would adapt to eating a different kind of plant.
They would evolve into a new species
They would eventually die from lack of food
They would not be affected.
A certain species of owl lives only in certain woodland. If the trees where these owls live are removed by loggers what will most likely happen to the owl population?
it will decrease to the point of extinction
it will hibernate until the trees grow back
it will increase in number
it will evolve into a new species
Which of the following have been produced by selective breeding?
Large brocolli
Chickens that lay lots of eggs
Wheat plants with lots of seeds
Rice plants resistance to disease
All of these
