Biodiversity

Front

Which of the following is NOT TRUE about the greenhouse effect?

• It is caused by all the plants on Earth giving off heat during photosynthesis
• Carbon dioxide produced by fossil fuel use is a major contributor to it
• It is where solar radiation is converted to infrared radiation (heat) and trapped in the atmosphere by GHGs
• It contributes greatly to global warming

Back

It is caused by all the plants on Earth giving off heat during photosynthesis

Front

Which two variables must be considered to accurately determine species diversity and compare it across communities?

Back

species richness and relative abundance

Front

What is TRUE about ecosystem stability?

Back

It is the ability of an ecosystem to bounce back after a disturbance, which will be higher if biodiversity is higher

Front

Variation in tulip flower color is an example of which type of biological diversity?

Back

genetic diversity

Front

How to calculate relative species abundance (p_i)?

Back

number of individuals in a species/total individuals in a community

Front

Medicines from plant species are categorized under which ecosystem service?

Back

provisioning services

Front

What are ecosystem services?

Back

ways that nature supports humans

Front

Pollinators visit flowers for food, thereby pollinating the flowers to help plants reproduce. Without pollinators, humans would have to spend lots of time and money to do it themselves. Which of the following correctly describes the ecosystem service and benefit type for pollination? Options: regulating services; indirect benefit, provisioning services; indirect benefit, regulating services; direct benefit, provisioning services; direct benefit

Back

regulating services; indirect benefit

Front

Which of the following is NOT one of the five main ways that humans are negatively affecting biodiversity?

• habitat loss
• taking antibiotics
• overexploitation
• introducing species into new habitats where they can become invasive

Back

taking antibiotics

Front

In the salt marshes, snails can eat lots of marsh grass, but blue crabs eat the snails, limiting the number of snails eating the grass. Which of the following options shows the correct arrows and symbols demonstrating the effects on different organisms?

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