Download Biodiversity AND final exam review questions ppt

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

History of zoology since 1859 wikipedia, lookup

Theory of mind in animals wikipedia, lookup

The variety of life in an area that is
determined by the number of different
species in that area
Increases the stability of an ecosystem
and contributes to the health of the
Why is it important?
Biodiversity maintains a healthy
biosphere and provides direct and
indirect value to humans
There are economic, aesthetic, and
scientific reasons for preserving
Critical Thinking Question
Why is preserving biodiversity
important for the human food supply?
80% of human food supply comes
from 20 kinds of plants. But humans
use 40,000 species for food, clothing
and shelter. Biodiversity provides for
variety of foods for the planet.
Another question
Why is it important to maintain
biodiversity for medical reasons?
Drugs developed from an extract from
Madagascar periwinkle is used to treat
childhood forms of leukemia
Promoting Biodiversity
Biodiversity Extra Credit Project
Can replace any 4th marking period grade (Lab
Report, Evolution Packet, Labs, Quizzes, etc)
Research one way to promote biodiversity in a
particular ecosystem, and give a 2 minute
presentation to the class in either the form of a
poster, PowerPoint, or essay. You may quote
sources, but you MUST reference them!
Project presentations will be given on Thursday,
June 9th
Do Now:
Work on the Final Exam Review
Packet. This is not an assignment
grade, but it will help you do well
on the final exam (worth 10% of
your grade!!!)
Use your notes, your textbook,
and work with each other!
Pay special attention to the
following questions in the
review packet:
1, 3, 4, 7, 9, 11, 15, 19, 24, 25,
26, 34, 36, 37, 39, 40, 42, 49,
53, 54, 55, 56, 61, 62, 63, 64,
Review Question #1
How would the biodiversity of an
ecosystem become affected if 25% of
the herbivores die off?
Review Question #2
2 spotted cheetahs produce a litter of 4
cubs. 2 cubs are spotted, and 2 are
solid black. Which fur type is dominant,
and which is recessive?
Review Question #3
materials and energy can transfer from
one organism to another through the
food chain.
Review Question #4
Comparisons of DNA sequences
showed that the DNA of modern
caecilians and salamanders are
most similar to each other.
Review Question #5
Types of Natural Selection:
 Directional- ex: Pepper moth
Direction selection is when gene variation shift
in a particular direction in response to a change
in the environment