Exercise 3 | HS Elspark

EXERCISE 3

Page 42

Interactions and interdependencies


1 Give one word for the following descriptions: 1.1 The sum total of all the ecosystems on Earth. Biosphere 1.2 Interdependence in ecosystems Symbiosis

1.3 A group of one type of living organism found in one habitat.

Population 1.4 The variety of life that is found in one ecosystem. Biodiversity


1.5 A relationship where one party benefits while the other party is neither advantaged nor disadvantaged.

Commensalism 1.6 All the organisms of a specific type that live in an

ecosystem. Population


1.7 All the populations in one habitat Community 1.8 An area where all living and non-living factors interact with

each other and are interdependent on each other, e.g. a jungle.

Ecosystem


1.9 A relationship where both parties benefit. Mutualism 2. Match column A to column B by writing down the correct

letter next to the description:


Column A Column B

The relationship between ants and plant lice

C A. Parasitism

The area where plants and animals live.

E B. Ecology


Column A Column B

The relationship between a clown fish and an anemone.

D

C. Mutualism


Column A Column B

A herd of springbok on the grasslands F D. Commensalism

The study of living organisms and the places they live.

B E. Habitat


Column A Column B

The relationship between humans and tapeworms

A F. Population


3 Study the photos below and answer the questions that follow:


3.1 What is the difference between biotic and abiotic factors in an ecosystem?

Biotic factors: living organisms in an ecosystem Abiotic factors: non-living factors in an ecosystem 3.2 Name four biotic factors you can observe in the photos. Any four: Elephant, leopard, giraffes, buffalo, trees, grass


3.3 Name three abiotic factors you can observe in the photos. Any three: Soil, climate, sunlight, oxygen, carbon dioxide

3.4 What type of symbiosis exist between the leopard and the tree?

Commensalism


3.5 Explain your answer to Question 3.4. The leopard finds shelter in the tree. Leopards pull their prey into trees to protect it from larger and stronger predators. The leopard benefits from this relationship, but the tree is not disadvantaged.


Exercise 3 | HS Elspark

Documents

Transcript of Exercise 3 | HS Elspark