science quiz tomorrow
Two savanna communities both contain 15 plant species. In community A, each of the 15 species is represented by 20 individuals. In community B, 10 of the species are each represented by 12 individuals; the remaining 5 species are each represented by 3 individuals. Which statement best describes the two communities?
Community A has higher species evenness
What prediction is correct about island biogeography?
Islands closer to mainland will be more diverse due to more successful dispersal.
Which is NOT a factor in the theory of island biogeography? Islands farther from the continent have more species due to increased speciation dispersing species are more likely to find a large habitat islands can also be isolated areas within a continent larger habitats contain a larger range of environmental conditions
Islands farther from the continent have more species due to increased speciation
What is the best way to reduce stress on the ecosystem's provisioning services?
Slow down population growth
Which of the following is true about island biodiversity? Small islands are more likely to have more immigrated species Small islands have higher biodiversity than large islands Small islands have more resources and as a result may have more species Small islands have fewer resources and as a result may have fewer species
Small islands have fewer resources and as a result may have fewer species
The aesthetic value of an ecosystem provides
a cultural service.
When a spruce tree is harvested so the wood can be used to build a house, the tree is providing
a provision.
Human waste is often dumped in the ocean. Microbial organisms in marine ecosystems can break down organic waste into less harmful components. This is an example of
a regulating service.
Bees are important to ecosystems and humans because they provide
a support system through the pollination of food crops.
Evolved resistance to a pesticide is an example of what
artificial selection
The study of where organisms live and how they got there is called
biogeography
A(n) ______ in species diversity is associated with a(n) ________ in the functions an ecosystem provides.
decline; decline
The movement of organisms from one place to another is called
dispersal
You are on a town committee formed to determine the borders for a new local nature park. You explain that according to the theory of island biogeography, if the committee wishes to promote species richness it should
increase size of park, decrease the distance between the cart and nearby forest
Which is most likely to be a direct result of lack of genetic diversity in food crop such as corn?
increased susceptibility on plant disease
The theory of island biogeography suggests that species richness is affected by what factors
island distance from mainland, how the island is formed
Why is the Chatham Island Robin in a decline?
population bottleneck
Products obtained from nature that humans can use such as lumber, medicines and food crops are
provisions.
The Cretaceous-Tertiary extinction caused by an asteroid causing nearly 75% of all plant and animal species to go extinct. Why?
rapid climate change and habitat change
Which is NOT one of the five ecosystem services that are used to calculate instrumental value? species biodiversity resilience support systems regulating services
species biodiversity
Living organisms must acquire energy from their environment. Examples of adaptations that help organisms acquire this energy include
the dark, heat absorbing coloration of a reptile, the fangs and claws of a lion
Ecosystem services
the processes by which life-supporting resources are produced.
Which of the following is a measure of the biodiversity of an ecosystem?
the total number of different plant species
The intrinsic value of an ecosystem is
the value of an ecosystem independent of any human benefit.
what is an example of an instrumental value of an ecosystem?
use of lumber from a forest