Unit 5.1 Biology Questions And Answers
Section 5.1 Assignment: Parts of Ecosystems
1. A. Take out the graphic organizer you made in the Guided Practice 5.1B 1: Biotic and Abiotic Factors. Make sure you have labelled the appropriate parts with the terms abiotic and biotic, and you have included at least four examples of each. You will hand this graphic organizer in with your section assignment.
(2 marks)
B. Choose one abiotic factor from your list. Imagine what would happen if you changed that one abiotic factor. Describe one possible outcome of changing the abiotic factor you have chosen. (Hint: Think of how changing the abiotic factor would influence one of the biotic parts of the ecosystem.) (1 mark)
Water – the human would eventually die off because they need water …show more content…
to live.
2. A. What is the difference between a producer and a consumer? (1 mark)
A Producer is an organism that produces food in the form of carbohydrates and a Consumer is an organism that eats other organism. The difference between the two Is that a producer produces its food and a consumer doesn’t.
B. A food chain and a list of terms are given below. Label the organisms in the food chain using terms from the list. You may use list terms once, more than once, or not at all. More than one word may apply to each organism.
(4 marks)
(a) herbivore (b) consumer (c) producer (d) carnivore
(e) omnivore (f) autotroph (g) heterotroph
grass
goat
cougar producer consumer
carnivore autotroph autotroph
heterotroph producer herbivore
carnivore
3. A. Draw a food web that includes all of the following organisms: mouse, dandelion, wheat, frog, grasshopper, hawk, and rattlesnake. Some information is provided below to help you. (2 marks)
Grasshoppers eat dandelions.
Snakes eat mice and frogs.
Mice and grasshoppers eat wheat.
Frogs eat grasshoppers.
Hawks eat mice, frogs, and snakes.
(Either draw it here, use a drawing program, or hand it in with your graphic organizer.)
B. Imagine that there is a sudden drop in the grasshopper population in a certain ecosystem. After this decrease in the grasshopper population, you decide to monitor the other populations in the ecosystem. Your findings are presented below.
Organism
Grasshoppers
Mice
Frogs
Hawks
Snakes
Change in Population After 1 Month decrease no change decrease no change no change
Change in Population After 3 Months decrease decrease decrease no change no change
Explain why the mouse population showed no change after one month, but decreased after 3 months.
(2 marks)
They showed in change after one month because the also eat wheat but after three There was not enough wheat or grasshopper to eat.
4. A. Which type of organism would have the highest level of energy available to it: a producer, a herbivore, or a carnivore? Briefly explain why. (2 marks)
A producer because it makes its own food while a herbivore and carnivore feeds on producer to their energy.
B. Which type of organism would have the least amount of energy available to it: a producer, a herbivore, or a carnivore? Briefly explain why. (2 marks)
A carnivore because the eat other animal and its takes a lot work to do when a A producer and a herbivore dont
C. Why might you see a large flock of ducks in a habitat, but rarely a large number of eagles? (1 mark)
I don’t
know
5. Label each of the scenarios as commensalism, mutualism, or parasitism. You may use each label once, more than once, or not at all. In each case, briefly describe why you chose the label you did. (1 mark each)
A. The red-billed oxpecker is a bird that lives on the skin of giraffes. It eats small insects that the giraffe considers pests.
Mutualism because the bird gets food and the giraffe gets rid of the annoying insects.
B. The dodder plant has no chlorophyll, roots, or leaves. It attaches to another plant, such as the potato plant, and develops a tangled mass of vine-like stems that hug the potato plant. The dodder penetrates the stem of the potato plant in order to obtain water and nutrients. The potato plant rarely dies, but its growth is usually limited.
Parasitism because the dodder plants benefits but the potato plants growth gets Limited or can die so it gets negatively affected.
C. Algae grows on the shells of freshwater snails. The algae needs a surface to attach to, and the snail is camouflaged by the algae, helping to protect the snail from predators.
Mutualism because both of them benefit.
1. A. Take out the graphic organizer you made in the Guided Practice 5.1B 1: Biotic and Abiotic Factors. Make sure you have labelled the appropriate parts with the terms abiotic and biotic, and you have included at least four examples of each. You will hand this graphic organizer in with your section assignment.
(2 marks)
B. Choose one abiotic factor from your list. Imagine what would happen if you changed that one abiotic factor. Describe one possible outcome of changing the abiotic factor you have chosen. (Hint: Think of how changing the abiotic factor would influence one of the biotic parts of the ecosystem.) (1 mark)
Water – the human would eventually die off because they need water …show more content…
to live.
2. A. What is the difference between a producer and a consumer? (1 mark)
A Producer is an organism that produces food in the form of carbohydrates and a Consumer is an organism that eats other organism. The difference between the two Is that a producer produces its food and a consumer doesn’t.
B. A food chain and a list of terms are given below. Label the organisms in the food chain using terms from the list. You may use list terms once, more than once, or not at all. More than one word may apply to each organism.
(4 marks)
(a) herbivore (b) consumer (c) producer (d) carnivore
(e) omnivore (f) autotroph (g) heterotroph
grass
goat
cougar producer consumer
carnivore autotroph autotroph
heterotroph producer herbivore
carnivore
3. A. Draw a food web that includes all of the following organisms: mouse, dandelion, wheat, frog, grasshopper, hawk, and rattlesnake. Some information is provided below to help you. (2 marks)
Grasshoppers eat dandelions.
Snakes eat mice and frogs.
Mice and grasshoppers eat wheat.
Frogs eat grasshoppers.
Hawks eat mice, frogs, and snakes.
(Either draw it here, use a drawing program, or hand it in with your graphic organizer.)
B. Imagine that there is a sudden drop in the grasshopper population in a certain ecosystem. After this decrease in the grasshopper population, you decide to monitor the other populations in the ecosystem. Your findings are presented below.
Organism
Grasshoppers
Mice
Frogs
Hawks
Snakes
Change in Population After 1 Month decrease no change decrease no change no change
Change in Population After 3 Months decrease decrease decrease no change no change
Explain why the mouse population showed no change after one month, but decreased after 3 months.
(2 marks)
They showed in change after one month because the also eat wheat but after three There was not enough wheat or grasshopper to eat.
4. A. Which type of organism would have the highest level of energy available to it: a producer, a herbivore, or a carnivore? Briefly explain why. (2 marks)
A producer because it makes its own food while a herbivore and carnivore feeds on producer to their energy.
B. Which type of organism would have the least amount of energy available to it: a producer, a herbivore, or a carnivore? Briefly explain why. (2 marks)
A carnivore because the eat other animal and its takes a lot work to do when a A producer and a herbivore dont
C. Why might you see a large flock of ducks in a habitat, but rarely a large number of eagles? (1 mark)
I don’t
know
5. Label each of the scenarios as commensalism, mutualism, or parasitism. You may use each label once, more than once, or not at all. In each case, briefly describe why you chose the label you did. (1 mark each)
A. The red-billed oxpecker is a bird that lives on the skin of giraffes. It eats small insects that the giraffe considers pests.
Mutualism because the bird gets food and the giraffe gets rid of the annoying insects.
B. The dodder plant has no chlorophyll, roots, or leaves. It attaches to another plant, such as the potato plant, and develops a tangled mass of vine-like stems that hug the potato plant. The dodder penetrates the stem of the potato plant in order to obtain water and nutrients. The potato plant rarely dies, but its growth is usually limited.
Parasitism because the dodder plants benefits but the potato plants growth gets Limited or can die so it gets negatively affected.
C. Algae grows on the shells of freshwater snails. The algae needs a surface to attach to, and the snail is camouflaged by the algae, helping to protect the snail from predators.
Mutualism because both of them benefit.