4.0/4.1
How do we classify animals? Name the two main groups.
Invertebrate and vertebrate
Name the study of how organisms interact with each other and with their environment.
Ecology
What percentage of the Earth's water is freshwater?
3%
This represents a singular and linear energy pathway that starts from one organism to another. What is this?
Food chain.
Interspecific interaction.
What is a preferred habitat?
Preferred habitat is the place where the organism has an advantage over other organisms.
What 2 factors composes the biosphere? Define each.
Biotic factor - living or once living things
Abiotic factor - non living things
List the four major types of freshwater ecosystems.
Streams, ponds, lakes, and wetlands.
This category helps us understand the position of an organism in a food chain. What is this?
Trophic level
Name an interaction that negatively affects both species.
Interspecific Competition
Name at least 3 common characteristics of all living things.
1. They are made of cells
2. They reproduce
3. The grow and develop
4. They respond to their environment
5. They use energy
What is an ecosystem?
A system in which organisms and their environment interact.
What is the term used to describe the amount of the minerals magnesium and calcium present in water?
Water hardness
What is an "Autotroph"?
The first trophic level, where organisms make their own food.
Mutualism
What is a type of vertebrate that cannot internally control their body temperature? (Spell it)
Ectotherms
What is the difference between Community and Population?
Community is a population of different species.
Population is a group of same species.
List 3 causes of water pollution.
Sediments, Temperature change, and Chemicals (Acid rain)
What is the difference between primary consumer and secondary consumer?
Primary consumers are herbivores, they only consume producers.
Secondary consumers are may consumer other animals (carnivores).
What is the difference between predation and parasitism?
Parasitism is a long-term close relationship while predation is a quick and far interaction.
Which type of vertebrate animals maintain a consistent body temperature regardless of where they are? Which groups of animals belongs in here?
Endotherms / Mammals and Birds
List the 5 levels of environmental organization from smallest unit to the biggest one.
Organism, Population, Community, Ecosystem, Biosphere
Where would we expect to find more oxygen: the water layer near the surface of a lake or the water layer found deep inside the lake? Explain your reasoning.
The water layer found deep inside the lake because the water found in deeper layer has colder temperature, and cold water holds more oxygen.
What is a biomass, what is its purpose and where does it begin?
Biomass is the energy in living organisms which measures the general health of each ecosystem and it begins with the producers.
Some harmless bacteria live on human skin and feed on dead skin cells and oils without causing harm or benefit to the person. What is this type of interaction called?
Commensalism