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Lesson 4: Resources in Ecosystems

Last updated over 1 year ago
34 questions

let's check up on your previous knowledge

1

Which is the opposite of condensation?

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What follows evaporation during the water cycle? How does this occur?

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What is the water cycle?

Learning Objectives:

1. Distinguish between population, community and ecosystem.

2. Explain how resources affect population size.

You have to start do your starter Activity by using the following oneDrive link :

( 7 mins )
Resources in Ecosystems- Starter activity

Objective 1:

Distinguish between population, community and ecosystem.

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Objective 1- Starter activity :
Why do birds fly together in groups?

Activity 1.1: Keywords [Group work]
Examin the picture and answer question
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Resource:
Find any thing the animals & plants need to be a live ?

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Species:
Find group of organisms that have similar traits?

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Individual:
Find single member of organism ?

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population:
Find organisms of the same type that live in the same area

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Community:
Circle organism from different species that live together in the same area at the same time ( 3 mins )

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Ecosystem:
Give example of living and nonliving things in same area - By designing a poster ( you can use play Dough) ( 10 mins )

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Biosphere:
Do all parts of Earth and the surrounding atmosphere have life?

Key Words:

Resource: substance or object in the environment required by an organism for normal growth

species: is a group of organisms that have similar traits and are able to produce fertile offspring.

Individual: a single member of a species

population: all the organisms of the same species that live in the same area at the same time

Community: is all the populations of different species that live together in the same area at the same time

Ecosystem: all the living and nonliving things in an area

Biosphere: The parts of Earth and the surrounding atmosphere where there is life.

Objective 1 - Check your Understanding :

What level of organization each letter in below diagram represent
[ Individual - Biosphere – Ecosystem – Community - Population]
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A

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B

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C

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D

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E

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What dose the question mark [???] represent ? [Extra Mark]

Evaluate objective 1 - Understanding

https://forms.office.com/Pages/ResponsePage.aspx?id=BcfdYznIHEegZcnM9MOT0PNyJjLlvcVHt-5nZtmjny1UNk0ySDY3MFk1REhSQ1dRRDA2QjVOSUhTMC4u

Objective 2:

Explain how resources affect population size.

2.1 How do resources affect populations?

Activity 2.1: Lab Work

Fishy Population Changes

Students will do lab about Fish population and will submit lab work in Go-Formative

2.2 How Limiting Factors Affect Populations

Key words:

limiting factor is anything that restricts the size of a population.
Activity 2.2: Limiting Factors [Group work]
Examine the figure of a population of pikas below and Answer the question
Activity learnign outcome :
- Limiting factors
- Increas & deacrease of population
- Overpopulation
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Give example of resource pikas need to survive ?

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What will happen to the water if population of pikas grows?

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What will happen to the population of pikas if number of predators increase ?

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List all factors that limit population of pikas ?

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If the pikas population’s size grows so large more than the space and resources available in this area, this is

Check your Understanding :

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If a disease destroy barley plants in an ecosystem, what would happen to the bird population that eat barley plants?

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Which of the following are examples of limiting factors

2.3 How big can populations get?

Activity 2.3: Reading Activity learning Key words
Read the next paragraph about "How big can populations get?" and answer question as group
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What does Biotic potentiol mean?

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What is carrying Capacity ?

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THREE-DIMENSIONAL THINKING

Check your Knowledge :

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Without limiting factors, populations would keep growing in perfict condetion

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What does a limiting factor do?

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In a forest , what is a limiting factor for a rabbit population?

2.4 Population Size Decrease [Self Learnign Mark]

Activity 2.4: Self Learning
Examine the table to learn about what happens to species that see large decreases in population size. Then prepare note about what you read
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Prepare note about what happens to species that see large decreases in population size

Exit Ticket:

A population of coyotes lives in a habitat with plentiful food and no predators. Analyze the graph and interpret
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what is happening to their population size at the one year mark.

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Which of the following explains what happened to the coyote population size when it reached its carrying capacity, and why?

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Real-World Connection