I Cans #1-2 Review
1.) What is the main source of energy for all living things come from?
The Sun
2.) Define producers, consumers, and decomposers. Give an example of each.
Producer—plant—gets their energy from the sun
Consumer—anything that eats a plant or another consumer
Decomposer—organism that breaks down once living plant and animal materials
3.) Where are the producers in a food web or chain? Why?
At the bottom because they begin a food web/chain by providing the original food source. They make their own food through photosynthesis and get their energy directly from the sun.
4.) Identify the producers and consumers in the picture below:
**Once you identify the consumers: categorize them as Primary, Secondary, and Tertiary consumers.
Producers: grass (plants)
Primary consumers: rabbit, snail, caterpillar, bird
Secondary consumers: lizard, bird, eagle
Tertiary Consumers: eagle
5.) Explain the role of decomposers in a food web/chain.
To breakdown once living (dead) plants and animals providing nutrients to the soil.
6.) Explain the difference between a food web and a food chain.
Food webs have many different producers, consumers, etc. They contain many food chains within them.
Food chains show a direct link from one producer to a consumer to another consumer and so forth.
7.) Make a food chain for the following living organisms: rabbit, bear, coyote, berries
Label the producers and consumers
Berries à Rabbit à Coyote à Bear
Producers: Berries
Consumers: Rabbit, coyote, bear
8.) Define the following:
a. Producers: Plants—gets energy from the sun to make their own food through photosynthesis
b. Herbivores: only eats plants
c. Carnivores: only eats meat (other consumers)
d. Omnivores: eats both plants and animals (producers and other consumers)
e. Decomposers: breaks down once living plant and animal materials
f. Scavengers: feeds off of dead animals
9.) Use the following picture to identify the following: (producers, herbivores, carnivores, omnivores)
Producer: Grass
Herbivores: Grasshopper, Mouse, Rabbit
Carnivores: Lizard, Hawk, Snake
Omnivores: None
I Can #3 Review
1.) What do the arrows represent in this food web? Transfer of energy
2.) What happens to the energy as you go from grass, to the deer, and up farther? Why does this happen?
As you go up the food chain from producer and up—the number of organisms and the ENERGY DECREASES because there is heat transferred to the atmosphere.
3.) Explain how the Law of Conservation of Energy takes effect in a food web.
The Law of Conservation states the energy is not lost or destroyed. In a food chain, some thermal (heat) energy is transferred to the atmosphere but is not lost.
4.) Explain the following picture:
Think about energy and number of organisms!
The number of organisms decreases as you go up the food pyramid as does the energy. There is less energy available because energy to transferred to thermal energy and enters the atmosphere. Therefore, less organisms are at each level. There are less tertiary (3rd) consumers than primary consumers.
I Cans #4-5 Review
1.) Where does photosynthesis take place in the cell?
In the chloroplasts of plant cells
2.) Explain what raw materials are needed for photosynthesis to take place.
Carbon dioxide, water, sunlight
3.) Explain what products are made from photosynthesis.
Glucose and oxygen
4.) Write the formula for photosynthesis.
Formula: 6CO2 + 6H2O =light energy=> C6H12O6 + 6O2
(carbon dioxide + water =light energy=> glucose + oxygen)
5.) How does photosynthesis follow the Law of Conservation of Energy?
Energy is not created or destroyed in cellular photosynthesis—it is just transferred from thermal energy and radiant (sun) to chemical energy (glucose).
I Can #6 Review
1.) What types of cells go through Cellular Respiration? What part of the cell does it occur in?
Animal and Plant cells--Mitochondria
2.) What are the materials needed for Cellular Respiration?
Oxygen, glucose
3.) What are the products of Cellular Respiration?
Carbon dioxide, water, energy (ATP)
4.) Write the formula for cellular respiration.
C6H12O6 + 6O2 => 6CO2 + 6H2O + energy
5.) How does cellular respiration follow the Law of Conservation of Energy?
Energy is not created or destroyed in cellular respiration—it is just transferred from chemical energy in glucose and thermal energy.
6.) Explain how plants are dependent on animals and animals are dependent on plants.
Plants need animals for carbon dioxide that released from them and animals need plants for oxygen and glucose. Animals breath in oxygen and get glucose from food.