Unit 1 Test 1 Chap 1-3 Flashcards
1
Q
Name and describe the 3 R’s of Animal Ethics.
A
Reduction - As little number of animals as possible.
Refinement - Minimal pain for animals.
Replacement - Find alternatives for animals.
2
Q
Name and describe the 3 variables in a scientific experiment.
A
Independent: Changed
Dependent: Measured
Controlled: Kept the same (3 or more)
3
Q
Name 5 abiotic environmental factors
A
- Ambient temperature
- Water temperature
- Soil temperature
- Soil texture
- Soil colour
- Soil pH
- Light intensity
- Wind speed
- Water pH
- Water depth
4
Q
What do you need to have to qualify as a biodiversity hotspot?
A
- 1500 species of endemic vascular plants found nowhere else in the world.
- Have to have lost 70% of primary native vegetation
5
Q
Define: Gene
A
- A section of DNA in a chromosome that encodes an instruction, usually for a specific protein, which, when expressed, may affect a certain characteristic.
6
Q
Define: Gene Pool
A
- The sum of all the genes, including all of their different forms, in a given population of one species
7
Q
Define: Species
A
- A group of morphologically similar organisms that share a gene pool
8
Q
Define: Ecosystem
A
- All the organisms in a particular area, along with the non-living components of their environment, and all their interactions
9
Q
Define: Biosphere
A
- All the environments on Earth that organisms inhabit
10
Q
Define: Community
A
- A group of populations living together
11
Q
Define: Habitat
A
- The natural home or environment of an animal, plant, or other organism
12
Q
Define: Environment
A
- The surroundings or conditions in which a person, animal, or plant lives or operates.
13
Q
Define: Population
A
- A group of interbreeding organisms [same species], occupying a defined area during a specific time
14
Q
Define: Niche
A
- Refers to functional position of an organism in its environment, including the habitat where it lives the time it is active, and the resources it uses.
15
Q
Why do we study biodiversity? (4 points)
A
- Ecosystem processes are essential to survival
- Education and Cultural benefits
- Contributes to food production, water, fuel, drugs and climate control.
- Tourism helps economy.
16
Q
What are the limitations to the biological species model?
A
- Cannot apply to fossils or extinct organisms.
- Cannot broaden evolutionary knowledge.
