Biodiversity

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

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NGSS.HS-ESS2-4

NGSS.HS-ESS2-6

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

• growth rates and death rates

• total abundance and habitat type

• genetic diversity and ecosystem diversity

• species richness and relative abundance evenness

Answer explanation

Evenness compares relative abundances, where the more similar (equal) the relative abundances are, the more even they are.

Which of the following is TRUE about ecosystem stability?

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

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

• It is the likelihood that species will go extinct in the ecosystem, which will be higher if biodiversity is lower

• It is the likelihood that species will go extinct in the ecosystem, which will be higher if biodiversity is higher

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NGSS.HS-LS2-6

NGSS.HS-LS4-5

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

• genetic diversity

• ecological diversity

• biosphere diversity

• species diversity

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is the correct way to calculate relative species abundance (p_i)?

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

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

• species richness/total abundance

• total abundance/ species richness

Tags

NGSS.HS-LS2-2

A large percentage of our medicines come from various plant species around the world. These medicines should be in which category of ecosystem services?

• regulating services

• supporting services

• cultural services

• provisioning services

Tags

NGSS.HS-ESS3-1

What are ecosystem services?

• ways that humans support nature

• ways that humans harm nature

• ways that nature supports humans

• ways that nature harms humans

Tags

NGSS.MS-LS2-5

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?

• regulating services; indirect benefit

• provisioning services; indirect benefit

• regulating services; direct benefit

• provisioning services; direct benefit

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

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NGSS.HS-LS2-7

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.

• 
• 
• 
• 

Answer explanation

Eating something would be a negative direct effect (solid arrows), but predators can have positive indirect effects (dashed arrows) on the food of their prey ("the enemy of my enemy is my friend").

Tags

NGSS.HS-LS2-3

NGSS.HS-LS2-6