Ecosystem basics

What is an ecosystem?

• A single species in an area

• A system where organisms interact with each other and their environment

• A collection of abiotic factors only

• A group of unrelated animals

Which of the following is a biotic factor?

• a) Sunlight

• b) Water

• d) Trees

• c) Rocks

What does "flora" refer to?

• Plant life in a region

• Animal life in a region

• Weather pattern

• Soil composition

​ Along the equator the main biome is a​ (a)   whereas deserts are found at ​ (b)   ​ north and south of this along the ​ (c)   . The biome that includes the UK is ​ (d)   . A main difference with a trf is that deciduous trees ​ (e)   in the winter whereas trf grow leaves all year round.

• tropical rainforest
• 30 degrees
• Tropics of Cancer and Capricorn
• deciduous forest
• loose their leaves
• arctic tundra
• 60 degrees
• Equator
• coniferous forest
• remain green

Select the Tropical Rainforest biome on the map:

Select the tundra area on the map:

A rainforest typically receives at least ... of rain a year

Reorder the following food chain in the ascending order - start at the bottom

• Pond snail

• Algae

• Frog

• Heron

Categorise these features of a small ecosystem - a pond

Groups:

(a) Abiotic

,

(b) Producer

,

(c) Primary consumer

,

(d) Secondary consumer

• Kingfisher

• earth

• Water lillies

• Water Water Water Boatman

• Reed Mace

• Dragonfly

• Snail

• water

• Heron

• Sun

• Frog

• Pond skater

• stones

Place the labels in the correct places to complete the nutrient cycle

a

b

c

d

Uptake by plants

Input from weathered rock

Input of nutrients dissolved in the rain

Output from leaching