Ecosystem Dynamics and Interactions

Ecosystem Dynamics and Interactions

Assessment

Interactive Video

Biology, Science

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers ecological concepts such as niches, competition, and resource partitioning. It explains symbiotic relationships, including parasitism, mutualism, and commensalism. The role of keystone species, like sea otters, is discussed, highlighting their impact on ecosystems. The tutorial also delves into energy flow and nutrient cycling, emphasizing the inefficiency of energy transfer across trophic levels and the recycling of nutrients.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a niche in ecological terms?

A type of competition

A type of habitat

A food source

The unique living arrangement of a species

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when niches overlap?

New habitats are formed

Species become extinct

Competition occurs

Species evolve into new forms

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a symbiotic relationship where both species benefit?

Parasitism

Mutualism

Commensalism

Predation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a parasitic relationship, what happens to the host?

It benefits

It becomes a predator

It remains unaffected

It is harmed

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role do keystone species play in an ecosystem?

They are the primary producers

They have a disproportionately large effect

They are the most numerous species

They have a minimal impact

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary source of energy for nearly all ecosystems on Earth?

The moon

Ocean currents

The sun

Volcanic activity

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What process do producers use to convert sunlight into chemical energy?

Respiration

Photosynthesis

Decomposition

Fermentation

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