7.1 Biodiversity Lesson 1

Biodiversity Lesson

• ​Siberian tigers are one of five remaining tiger subspecies.

• In the early 20th century, hunting and habitat loss reduced the wild population to just 20–30 animals.

• Conservation efforts have helped the wild population rebound to 450–500 today.

Multiple Choice

What 2 things caused the tiger population to decrease?

• hunting and habitat loss

• cold weather and hunting

• global warming and habitat loss

• hunting and fishing

Multiple Choice

Differences in DNA among individuals

• Genetic Diversity

• Species Diversity

• Ecosystem Diversity

• Cultural Diversity

Multiple Choice

Variety of species in a given area

• Genetic Diversity

• Species Diversity

• Ecosystem Diversity

• Cultural Diversity

Multiple Choice

Variety of habitats, ecosystems, communities

• Genetic Diversity

• Species Diversity

• Ecosystem Diversity

• Cultural Diversity

Multiple Choice

Which of the following is NOT a type of environmental science biodiversity?

• Genetic

• Ecosystem

• Species

• Cultural

Multiple Choice

Which ecosystem was fragile enough to be destroyed if one of it's strands goes extinct? (WATCH THE VIDEO!!!)

• tropical rainforest

• coral reef

Multiple Choice

All organisms are categorized into different groups at different levels.

This is called taxonomy.

• True

• False

Multiple Choice

Taxonomists organize species based on their

• physical appearance only

• genetic makeup only

• physical appearance AND genetic makeup

• physical appearance, genetic makeup, and geographic location

Multiple Choice

How many species are on Earth?

• 5

• between 5 and 30 million

• 30

• between 5 and 30

Multiple Choice

Where does biodiversity increase?

• in zoos

• open ocean

• toward the equator

• estuaries

Multiple Choice

Resist environmental change without losing function

• Resistant

• Recycled

• Resilient

• Restarting

Multiple Choice

Affected by change, but bounce back and regain function

• Resistant

• Recycled

• Resilient

• Restarting

Multiple Choice

Intact environments provide ecosystem services, such as

• water purification and recreation

• water purification and pest control

• pest control and water pollution

• recreation and pest control

Multiple Choice

High biodiversity decreases stability of communities.

• True

• False

Multiple Choice

How many of our most common prescription medications originated in nature?

• 118

• 150

• all of them

• 268

Multiple Choice

How does biodiversity help agriculture?

• humans can cross breed species to give plants beneficial traits

• organisms in nature might have qualities that are helpful at fighting diseases

• people enjoy visiting these places and help stimulate the local economy

Multiple Choice

How does biodiversity help the medical field?

• humans can cross breed species to give plants beneficial traits

• organisms in nature might have qualities that are helpful at fighting diseases

• people enjoy visiting these places and help stimulate the local economy

Multiple Choice

How does biodiversity help the economy?

• humans can cross breed species to give plants beneficial traits

• organisms in nature might have qualities that are helpful at fighting diseases

• people enjoy visiting these places and help stimulate the local economy

​Use this passage to answer the following questions!

Multiple Choice

Depending on a few plants for food is

• healthy for humans.

• risky for humans.

• good for crops.

• beneficial for some species.

Multiple Choice

Relying on one important crop can cause

• famine if the crop is wiped out.

• hybrids if the crop mixes with another population.

• disease if the crop came from wild plants.

• a new crop variety if a new species is introduced.

Multiple Choice

Some types of crops can be saved from disease if

• they can be genetically isolated.

• they are sprayed with enough pesticide.

• areas of high biodiversity are destroyed.

• they are crossbred with their wild plant relatives.

Multiple Choice

Most crops we eat today are hybrids.

• True

• False