NEW TOPIC (human Interaction)

Question 1

Population meaning

Answer 1

A group of organisms of the same species.

Question 2

Community meaning

Answer 2

2+ populations of organisms that are different species

Question 3

Habitat meaning?

Answer 3

A place where an organism lives

Question 4

Ecosystem meaning

Answer 4

The interaction between the community and the non living parts of their environment (their habitat)

Question 5

Interdependence

Answer 5

Depending on each other

Question 6

Abundance meaning

Answer 6

total number of individuals of a species in a given ecosystem

Question 7

Biodiversity meaning

Answer 7

The variety of all different species in an ecosystem

Question 8

What does high biodiversity mean

Answer 8

It’s a stable ecosystem

Question 9

Random sampling:

Answer 9

Placing quadrants at random coordinates and is used for investigating the number of organisms in a species

Question 10

Systematic sampling:

Answer 10

Placing quadrants at regular intervals along a transect line and is used for investigating the effect of an abiotic factor.

Question 11

Biotic meaning and examples:

Answer 11

Living things: predators, prey, availability, disease

Question 12

Abiotic meaning and examples:

Answer 12

Non living: sunlight, pH of soil, water, temperature, moisture

Question 13

What is a quadrat?

Answer 13

A grid to be placed randomly to count the number of species in a space.

Question 14

Formula for estimated population size=

Answer 14

(Total area)x mean number of daisies
Area sampled

Question 15

Random sampling practical:

Answer 15

1. Randomly place quadrat
2. Count organisms in the square
3. Repeat 10 times
4. Divide total by 10
5. Find the area of the whole place
6. Mean x area is the amount of organisms estimated