Share 5.4.3 How organisms Interact with Their Ecosystem
Save to Folder
What role do earthworms have in their ecosystem?
They breakdown dead plants and animals to return nutrients to the soil.
Is an organism's role just about where they live? If not, explain.
No. Their role is about where they live and WHAT THEY DO.
When observing how an organism interacts with an ecosystem, which factors are most important to consider: abiotic or biotic?
TRCIK QUESTION - you should consider all biotic AND abiotic factors of the ecosystem
Name 5 abiotic factors we have discussed in class
Water, soil, sunlight, rocks, temperature, rain, sand, etc
How do a plants roots interact with a biotic factor in its environment?
Insects, fungi, and small animals may eat the roots for food; worms and moles can loosen soil so roots may grow more easily
How do a plants roots interact with an abiotic factor in its envionment?
The roots grow in the soil pulling nutrients from it; the roots soak up water and deliver it to the plants stem and leaves
Define Biotic
a living organism such as a plant, an animal, a fungus, or a bacterium.
Define Abiotic
nonliving factors of the environment, including water, rocks, light, and temperature
Why are decomposers important to their ecosystem?
They return nutrients to the soil
How can you tell if a material has a low relative density? Give an example of a material with low relative density
It will float in water; ping pong ball, oil, cork
What is the difference between mass and volume?
Mass is how much of a substance there is (weight), and volume is the amount of space it takes up (size)
Describe what predators and prey are and give three examples
A predator in an animal that hunts another animal for food, and the prey animal is the hunted animal. Birds eat worms, cats eat mice, lions eat antelopes
What structures of a mole help it navigate ints environment and stay hidden from predators?
The mole has shovel like hands used for digging in the soil. It can stay underground and hide from predators.
In an experiment, which variable is the variable you change on purpose? Control, Independent, or Dependent?
Independent
In an experiment, which variable do you measure? Control, independent, or Dependent?
Dependent
In our race car experiments, describe the independent and dependent variables.
Independent=height of ramp, mass of car, track surface; Dependent=distance traveled
