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BISC Test 4
Terms in this set (76)
Which of the following is not a reason that pollinators are considered keystone species?
Pollinators have complex social structures and division of labor
Which of the following species is not likely to be considered a keystone species?
a fish species that specializes in eating only a few aquatic plant species and that does not form a main component of the diet of the carnivores in the system
Which of the following does not describe a keystone species?
a species that always occupies the highest trophic level in a community
Which of the following statements are TRUE about energy transfer?
Energy is lost between trophic levels as heat, metabolism, and waste.
Which of the following is not a correct statement about food chains?
food chains are often complex and intertwined
Just as cows consume grass for nourishment, bees consume ____________.
pollen and nectar (A and B)
Which of the following organisms would not be classified as consumers in a food chain?
Which of the following best explains why herbivorous organisms are more energetically efficient than those that consume meat?
herbivorous organisms are at the bottom of the food chain
Food chains are an important part of an ecosystem. A food chain shows __________.
shows which organisms are producers and which organisms are consumers (A and B)
Which of the following organisms would not be affected by a decrease in bee populations?
all of the above would be affected by a decrease in bee populations (deer, mice, birds, humans)
Which of the following examples does not describe a predation event?
a producer creates energy from sunlight
Bees are a colonial species and live in hives with thousands of other bees. Which of the following is an example of commensalism?
a beehive in the trunk of the tree
Although they are not native to the United States, honeybees have successfully competed for resources with native bees and other pollinator species by __________.
All of the above
The relationship between the bee and the bacteria living in the bee's gut can be classified as __________.
Which of the following are part of the ecosystem of Vermont's maple sugar-- providing region?
all of the above (maple trees, the soil, the temperature, the air)
Which of the following statements is not a characteristic or effect of climate change?
global warming is the only type of climate change
Temperature is an important physical feature of an ecosystem. Which option below shows a correct, direct relationship between temperature and organisms in an environment?
Arctic temperatures are increasing; the red fox is expanding its habitat to compete with the Arctic Fox
Which of the following are consequences of Arctic ice melting due to global warming?
All of the Above
Why are the extinctions of 1,103 organisms predicted to occur due to global warming?
this number represents organisms that will be unable to move to more suitable habitats when global warming causes their current habitats to be unsuitable
Which of these are examples of the effects of rising temperatures?
plants are blooming earlier in the year
Which of the following properly states the relationship between global temperature and global CO2 levels?
In the past 140 years, the temperature has increased rapidly, along with rises in carbon dioxide levels
The relationship between global warming and greenhouse gases is _________.
the more greenhouse gases, the greater amount of heat trapped from Earth's surface
Human actions have altered the global carbon cycle by ____________.
All of the above
The flow of carbon in an ecosystem is similar to the flow of energy in an ecosystem. TRUE or FALSE?
False; carbon cycles and energy flows in a direction through the ecosystem
Which of the these would need to be accounted for in a carbon footprint?
fossil fuel use and deforestation (A and B)
The carbon cycle is the movement of carbon atoms via natural processes such as ______________.
decomposition, photosynthesis, respiration
Slash-and-burn agriculture affects global warming by _____________.
removing photosynthetic organisms from the environment, thereby increasing CO2 in the environment
How do scientists measure changes in the levels of global atmospheric CO2?
they take ice core samples that allow measurement of CO2 over hundred of thousands of years
A television show about conspiracy theories is discussing global warming, claiming it is a myth that CO2 levels have risen over the last 1,000 years. Which evidence would be most useful to use in educating the producers to convince them that global warming is not a myth?
What makes an organism a keystone species?
its loss would negatively impact the community and ecosystem
Which is NOT necessarily true of a keystone species?
it is the most abundant species in the community
Which plant grouping relies heavily on bee or insect pollination?
Why are angiosperms important to honey bees?
pollen is a food source
Pollen is found on this part of the flower.
Which is NOT true of consumers?
they are photosynthetic
A food web describes
the intersection of multiple food chains in a community
An omnivore is
a plant and animal eater
species living in close association with each other
_________ occurs when one species benefits while another species is harmed, while _________ is when one species benefits while another species is unharmed.
Scientists monitor seasonal changes in angiosperms by examining
first flowering date
Which of the following BEST describes an ecosystem?
the plant, animal, and bacterial life plus the physical and chemical environment in an area
Why would a plant species go extinct but an animal survive when temperature change alters a habitat?
animals are more mobile than plants
Increase in greenhouse gases
trap heat in Earth's atmosphere
All of the following are true of the greenhouse effect, EXCEPT
high oxygen levels are contributing to global warming
Carbon Dioxide has rapidly increased in
the last 100 years
As a consequence of global warming..
some plants and animals will be negatively affected, while others will be positively affected
Which land mass is showing the most dramatic increase in surface temperatures in recent years?
Why are increasing temperatures in the Arctic a threat to polar bears?
All of the Above
Which processes regulate the natural carbon cycle on our planet?
photosynthesis, respiration, and decomposition
What is a Biome?
Large geographic area defined by its characteristic plant life
What are Biomes determined by?
climatic factors like temperature and rainfall
Temperate deciduous forest
Distinct seasons, trees that lose leaves in fall
warmer as you get closer to the equator and it is colder as you get closer to the poles
It also affects the coastal areas are the winds, depending upon the temperature of the water, the winds usually match that temperature.
Ponds and lakes
Streams and rivers
hot and wet
mild and wet in the summer and cold and mild wet in the winter
2 kinds one with tall-grass, which are humid and very wet and one with short-grass, which are dry, with hotter summers and colder winters than the tall-grass prairie.
Hot desserts: Have barely any precipitation (20-30 degrees celsius)
In cold desserts: Its snows in the winter (closer to arctic) and sometimes rains in the spring (-3-12 degrees celsius)
winters are very cold with only snowfall. The summers are warm, rainy, and humid. (-5-5 degrees celsius) (100-170 cm)
Cold (-10) and low precipitation (0-100 cm)
What is the Carbon Cycle?
Movement of carbon atoms between organic and inorganic molecules in the environment
measure of the total greenhouse gases produced by human activities
What are some human impacts?
Burning fossil fuel
Rice and cattle
small, thick-walled plant structures that contain cells that develop into sperm
transfer of pollen from male to female plant structures so that fertilization can occur
What is the percentage that are dependent on insect pollinators of flowering plants, or angiosperms?
Male reproductive organ
Female reproductive organ
sticky "landing pad"
the embryo of a plant, together with a starting supply of food, all encased in a protective covering
tube-like passage from stigma to the ovary
one member benefits at the expense of the other
both members benefit
one member benefits and the other is unharmed
the space, environmental conditions, and resources that a species needs in order to survive and reproduce
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