Ecology: Relationships and Energy Flow

Question 1

Ecology

Answer 1

the study of living things in their environment

Question 2

Biodiversity

Answer 2

A measure of all the plant 🌱 and animal 🦔 species found in an area

Question 3

Population

Answer 3

A group of organisms of the same species living in one particular area.
🐕 🐕 🐕

Question 4

Community

Answer 4

Populations of many different species living together in a particular area.
🐕 🐕 🐈‍⬛ 🐈‍⬛ 🐄 🐄 🐓 🐓

Question 5

Habitat

Answer 5

The area in which a community lives. 🏙️

Question 6

Ecosystem

Answer 6

An area where a community of organisms live and are affected by a range of environmental factors

Question 7

What can the surroundings be described as in more detail?

Answer 7

The environment

Question 8

The environment

Answer 8

All the factors that act on an organism or population

Question 9

How many groups is the environment divided into?

Answer 9

2 groups

Question 10

What are the groups the environment is divided into?

Answer 10

• non living (abiotic factors)
• living (biotic factors)

Question 11

Examples of abiotic factors

Answer 11

• temperature 🌡️
• humidity 💦
• light intensity 💡
• pH 🔴🟠🟡🟢🔵🟣

Question 12

E.g.s of biotic factors

Answer 12

• effect of predator on prey 🐻 🐟
• when 2 species compete for food 🐆 🦁 = 🦓

Question 13

What is taken to record the plants present in an area?

Answer 13

A sample

Question 14

Why is a sample taken?

Answer 14

Impossible to count every plant in an area

Question 15

Quadrat

Answer 15

Square frame used in sampling

Question 16

Size of quadrat

Answer 16

1 m side = area 1m2

Question 17

Most important thing about sampling

Answer 17

Method should produce reliable results

Question 18

How the method produces reliable results in sampling

Answer 18

As large as possible

Question 19

What does it mean to take a sample representative of the habitat?

Answer 19

To take as many as possible

Question 20

What does it mean to take a reliable sample?

Answer 20

Lots of repeats to make an average for area

Question 21

What does it mean to take a random sample?

Answer 21

Random coordinates and habitat divided into grid to avoid bias

Question 22

The 3Rs of sampling

Answer 22

• representative
• reliable
• random

Question 23

Percentage cover

Answer 23

percentage of the quadrat covered by a particular type of plant.

Question 24

Percentage cover use

Answer 24

Investigate plant distribution 🪴

Question 25

Pyramid of numbers

Answer 25

No of organisms at each trophic level of a food chain

Question 26

Pyramid of biomass

Answer 26

Mass of living tissue (biomass) at each trophic level of a food chain