Ecological Pyramids Worksheet
8 Questions
100 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Give one example of a food chain that exists in nature.

A rabbit eats grass, a fox eats the rabbit, a wolf eats the fox.

In an ecological pyramid, what happens to energy, biomass, and number of species as you move up? Why?

They all decrease because energy is lost as it moves up each trophic level.

What is biomass?

Biomass is renewable energy from plants and animals.

In an ecosystem, can there be more carnivores than herbivores? Explain why or why not.

<p>No, there must be more herbivores than carnivores.</p> Signup and view all the answers

What is the 10% rule? What is its significance? Why is energy lost?

<p>The 10% rule refers to the fact that only 10% of energy is transferred from one trophic level to the next.</p> Signup and view all the answers

List two human activities that interfere with ecosystems, food chains, and food webs.

<p>Over hunting and fishing.</p> Signup and view all the answers

Discuss what trophic level humans can occupy on an ecological pyramid and explain biomagnification.

<p>Humans can occupy all levels of the pyramid besides the producer and decomposer levels.</p> Signup and view all the answers

Who eats the sedge?

<p>Grasshoppers and chickens can eat sedge.</p> Signup and view all the answers

Study Notes

Food Chains and Ecosystems

  • A food chain example: grass is eaten by rabbits, rabbits by foxes, and foxes by wolves.
  • Energy, biomass, and number of species decrease as you move up an ecological pyramid due to energy loss at each trophic level.

Energy Transfer and Biomass

  • Biomass is the organic matter derived from plants and animals, serving as renewable energy.
  • The 10% rule signifies that only 10% of energy is transferred between trophic levels, leading to significant energy loss.

Carnivores and Herbivores

  • There must be more herbivores than carnivores in an ecosystem to ensure sufficient food supply for carnivores, preventing population collapse.

Human Impact on Ecosystems

  • Human activities like overhunting and overfishing disrupt ecosystems, food chains, and food webs.

Trophic Levels and Contaminants

  • Humans can occupy various trophic levels, excluding producers and decomposers, functioning as heterotrophs.
  • Biomagnification is the process where contaminants, like mercury, accumulate in higher concentrations in organisms at higher trophic levels.

Sedge in the Food Web

  • Sedge, a coarse grass, serves as a food source for grasshoppers and chickens in the ecosystem.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Description

Test your understanding of ecological pyramids and food chains with this worksheet. Explore key concepts such as energy transfer, biomass, and species numbers within trophic levels in nature. Perfect for students studying ecology and environmental science.

Use Quizgecko on...
Browser
Browser