Interdepedence & Biodiversity
How are populations in a community interdependent? Provide one example.
What is.... Individuals in a community rely on each other for nutrients, food, oxygen, carbon dioxide, digestion, maintenance, protection, etc?
Example: We all rely on plants for oxygen & sugars!
What do we call the level at which an organism gains energy?
A trophic level?
What are the seven types of heterotrophs?
What are...
Herbivores, carnivores, scavengers, omnivores, detrivours, and decomposers?
Detritus refers to...
What are...
partially decomposed animals, plants, and poo?
Distinguish between a food chain & food web.
A food chain is a simple model that shows a single chain of nutritional relationships among organisms in an environment, whereas a food web is a complex display of the nutritional relationships between organisms in an ecosystem.
Define biodiversity.
What is...the number and variety of species in an environment?
Name the trophic levels from bottom to top.
What are...
producers, primary consumers, secondary consumers, and tertiary consumers?
Herbivores eat only...
What are...
producers/ plants?
Decomposers break down things by...
What is...
secreting chemicals that break down the decomposing materials?
Energy flows because...
What is....
once it passes through an environment, it dissipates as heat?
What do the biodiversity and carrying capacity of an ecosystem depend on?
What is...
1. the transfer of energy from one organism to another,
2. the recycling of nutrients from the environment to the living things, and back to the environment.
3. the renewal of energy and the recycling of nutrients?
How do autotrophs gain energy?
What is...
they produce their own food using nonliving energy sources?
Carnivores eat only...
What is...
MEAT?
Detritivores ______________ the decomposing material and break it down into smaller molecules.
What is...
consumer or eat?
Matter cycles because...
it is made of atoms that do not get destroyed. It is continuously re-used in an environment?
Define the term niche.
the role an organism plays in its environment?
Name the two types of autotrophs.
What are... Photoautotrophs & Chemoautotrophs?
Scavengers eat...
What are...
organisms that have already been killed?
Why does an environment need decomposers?
What is...
They need decomposers to clear out dead material and return the nutrients back to the environment?
Distinguish between the types of pyramid diagrams.
What are...
Energy pyramids model the transfer of energy from one trophic level to the next?
Biomass pyramid show the total mass of living matter at each trophic level?
Number pyramids show the number of organisms at each trophic level?
How does a cactus demonstrate a niche in its environment?
What is...
They serve as food for the bats, birds, bees, ants, and butterflies that consume their nectar?
They serve as food, also, for the rats and mice that eat their seeds, and the bird, rats, mammals, reptiles, and insects that eat their fruit?
They serve as a home for nesting animals?
Distinguish between the two types of autotrophs.
What are...
Photoautotrophs use sunlight to make their own food and Chemoautotrophs use chemical such as sulfur and nightrogen to make their own food?
What are...
plants and animals?
Name examples of detritivores and decomposers respectively.
What are...
Detritivores: crabs, earthworms, beetles, termites, maggots, and ants?
Decomposers: mushrooms, bacteria, etc.?
Name the three types of nutrient cycles we discussed.
the water cycle, the nitrogen cycle, and the phosphorus cycle?