BISC 102 Test 4

Bees are a colonial species and live in hives with thousands of other bees. Which of the following is an example of commensalism?

A bee hive in the trunk of a tree.

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.

Food chains are an important part of an ecosystem.

A food chain shows which organisms are producers and which are consumers. *both a and b

Which of the following is an example of a mutualistic interaction between species?

A large fish visits a cleaner fish and removes parasites by earring them off the affected areas and bees get food resources by vibist not flowers. *both a and b

Which of the following examples does not describe a predation event?

A producer creates energy from sunlight.

Which of the following does not describe a keystone species?

A species that always occupies the highest trophic level in a community.

Temperature is an important physical feature of an ecosystem. Which option below shows a correct, direct relationship between temperature and organisms in an environment?

Active temperatures are increasing; the red fox is expanding its habitat to compete with the Arctic fox.

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

Which of the following are part of the ecosystem of Vermont's maple sugar-providing region?

All of the above

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.

Human actions have altered the global carbon cycle by _________________.

All of the above.

Which of the following are consequences of Arctic ice melting due to global warming?

All of the above.

Why are increasing temperatures in the Arctic a threat to polar bears?

All of the above.

Which plant grouping relies heavily on bee or insect population?

Angiosperms

Why would a plant species go extinct but an animal survives when temperature alters a habitat?

Animals are more mobile than plants.

Pollen is found on this part of the flower.

Anthers

Which land mass is showing the most dramatic increase in surface temperatures in recent years?

Arctic

Which of the following organisms would not be classified as consumers in a food chain?

Blueberry bushes

The carbon cycle is the movement of carbon atoms via natural processes such as ___________________.

Decomposition, photosynthesis, respiration.

Which of the following statements are TRUE about energy transfer?

Energy is lost between trophic levels as heat, metabolism, and waste.

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.

Pistil

Female reproductive organ topped with a sticky "landing pad" called the stigma

Style

Female reproductive organ; tube-like passage from stigma to ovary

Scientists monitor seasonal changes in angiosperms by examining ________________.

First flowering date

Which of the following is not a correct statement about food chains?

Food chains are often complex and intertwined.

Which of these would need to be accounted for in a carbon footprint?

Fossil fuel use and deforestation. *both a and b

Which of the following statements is not a characteristic or effect of climate change?

Global warming is the only type of climate change.

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.

All of the following are true of the greenhouse effect, EXCEPT __________.

High oxygen levels are contributing to global warming.

A television show about conspiracy theories is discussing global warming, claiming that it is a myth that carbon dioxide levels have risen over the last 1,000 years. Which evidence would be most useful in educating the producers to convince them that global warming is not a myth?

Ice cores

Which of the following properly states the relationship between global temperatures and global carbon dioxide levels?

In the past 140 years the temperature has increased rapidly along with rises in carbon dioxide levels.

Which is NOT necessarily true of a keystone species?

It is the most abundant species in the community.

What makes an organism a keystone species?

It's loss would negatively impact the community and ecosystem.

Stamen

Male reproductive organ; stem-like filament topped with a pollen-saturated anther

The relationship between the bee and the bacteria living in the bee's gut can be classified as ______________.

Mutualism

Mutualism

Symbiotic relationship in which both members benefit

Commensalism

Symbiotic relationship in which one member benefits and the other is unharmed

Parasitism

Symbiotic relationship in which one member benefits at the expense of the other

A food web describes __________________.

The intersection of of multiple food chains in a community.

Carbon dioxide has rapidly increased in _____________.

The last 100 years.

The relationship between global warming and green house gases is __________________.

The more greenhouse gases, the greater amount of heat trapped from earth's surface.

Which of the following BEST describes an ecosystem?

The plant, animal, and bacteria life plus the physical and chemical environnment in the area.

Which is NOT true of consumers?

They are photosynthetic.

How do scientists measure changes in the levels of global atmospheric carbon dioxide?

They gave ice core samples that allow measurement over hundred of thousands of years.

Why are 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 become unsuitable.

Increases in greenhouse gases ________________.

Trap heat in Earth's atmosphere.

_________ occurs when one species benefits while another species is harmed, while _____________ is when one species benefits while another species is unharmed.

Parasitism, commensalism.

Which processes regulate the natural carbon cycle on our planet?

Photosynthesis, respiration, and decomposition.

An omnivore is a _____________.

Plant and animal eater.

Which of these are examples of the effects of rising temperatures?

Plants are blooming earlier in the year.

Just as cows consume grass for nourishment, bees consume ______________.

Pollen and nectar. *both a and b

Which of the following is not a reason that pollinators are considered a keystone species?

Pollinators have complex social structures and divsion of labor.

Slash-and-burn agriculture affects global warming by __________________.

Removing photosynthetic organisms from the environment, thereby increasing carbon dioxide in the environment.

As a consequence of global warming, __________________.

Some plants and animals will be negatively affected, while others will be positively affected.

Symbioses describes _________________.

Species living in close association with each other.