Power Up

Question 1

Biosphere

Answer 1

The part of our planet where living things exist. It is the intersection of Atmosphere, Hydrosphere and Lithosphere.

Question 2

Ecosystem

Answer 2

It involves the interaction of biotic things and abiotic things in a given area.

Question 3

Biotic factor

Answer 3

Living things in an ecosystem

Question 4

Abiotic factor

Answer 4

Non-living things in an ecosystem

Question 5

Organism

Answer 5

It is the name for any living thing where it is a bacteria, plant or animal.

Question 6

Population

Answer 6

It is a group of the same species of organisms, living in the same place at the same time.

Question 7

Habitat

Answer 7

It is where organisms live.

Question 8

Community

Answer 8

A community is made of different populations interacting with each other (living in the same place at the same time)

Question 9

Decomposer

Answer 9

An organism that gains nutrients by breaking down dead organisms into simpler nutrients.

Question 10

Photosynthesis

Answer 10

It is the process of plants converting the energy from the sun into chemical energy.

Question 11

Location of photosynthesis

Answer 11

Inside an organelle within the cell called a chloroplast.

Question 12

Autotroph

Answer 12

When an organism can produce their own energy. eg. plants. ‘self feeders’. Also called a producer.

Question 13

Heterotroph

Answer 13

An organism that can not photosynthesise. Also called a consumer.

Question 14

Photosynthesis requirements/inputs

Answer 14

Carbon dioxide, water, light and chlorophyll.

Question 15

Photosynthesis products

Answer 15

Glucose and oxygen.

Question 16

Xylem

Answer 16

Transports water from the roots to the leaves.

Question 17

Phloem

Answer 17

Transports food from the leaves to the rest of the plant.

Question 18

Stoma(ta)

Answer 18

Allows carbon dioxide to enter and oxygen to be released from the leaf.

Question 19

Guard cells

Answer 19

Open and close the stomata.

Question 20

Man-made changes to ecosystems

Answer 20

pollution, deforestation, hunting.

Question 21

Natural changes to ecosystems

Answer 21

Floods, Droughts, Seasons, Disease, New species/predators, fire.

Question 22

Introduced species

Answer 22

A species that is not native to that habitat and has been unintentionally or deliberately been brought to that area by humans

Question 23

Dependant variable

Answer 23

Variable that is measured

Question 24

Independent variable

Answer 24

A variable that is changed by the investigator

Question 25

Types of errors

Answer 25

Systematic Errors. E.g. Parallax error, zero error and cross-contamination
Random Errors. E.g. Reading error, measuring error and temperature fluctuation

Question 26

Trophic levels

Answer 26

The grouping of organisms in an ecosystem

Question 27

How much energy at each trophic level is lost?

Answer 27

90%

Question 28

What is a Food chain used for?

Answer 28

Used to show the feeding relationship in an ecosystem. They show how energy in the form of food is passed from one organism to another.

Question 29

Food web

Answer 29

Shows all of the connections between the individual food chains in an ecosystem

Question 30

Competition

Answer 30

A tyoe of relationship that can occur between organisms of the same species as well as those of different species when there is limited food, water, shelter or mates

Question 31

Predator

Answer 31

Organisms that hunt, catch, kill and consume other organisms.

Question 32

Herbivore

Answer 32

Organism that eats only plants

Question 33

Omnivore

Answer 33

Organism that eats both plants and animals

Question 34

Carnivore

Answer 34

Organism that eats only animals