Science Revision Key Words Photosynthesis And Ecosysystems Eg Interaction Between Species

Question 1

Organisms that have a lot of characteristics in common and can mate to produce fertile offspring.

Answer 1

Species

Question 2

The way organisms depend on each other to survive, grow, and reproduce.

Answer 2

Interdependence

Question 3

Moving to another area for part of the year.

Answer 3

Migrate

Question 4

Differences in characteristics.

Answer 4

Variation

Question 5

Type of variation where a characteristic can only result in certain values.

Answer 5

Discontinuous

Question 6

Type of variation where a characteristic can take any value within a range.

Answer 6

Continuous

Question 7

‘Fighting’ with other organisms for resources.

Answer 7

Competition

Question 8

Animal that eats other animals.

Answer 8

Predator

Question 9

Animal that is eaten by another animal.

Answer 9

Prey

Question 10

Characteristic that enables an organism to survive and be successful in its environment.

Answer 10

Adaptation

Question 11

species of plants and animals that have only a small population in the world are …

Answer 11

Endangered

Question 12

a store of genetic samples from different species (4,4)

Answer 12

Genebank

Question 13

Long strand of DNA that contains many genes

Answer 13

Chromosome

Question 14

section of DNA that holds the information to produce a characteristic

Answer 14

Gene

Question 15

Development of a species over time

Answer 15

Evolution

Question 16

chemical that contains all the information needed to make an organism

Answer 16

DNA

Question 17

Part of the cell where the DNA is stored

Answer 17

Nucleus

Question 18

The remains of plants and animals that have turned to stone

Answer 18

Fossils

Question 19

the process by which organisms evolve is called natural…

Answer 19

Selection

Question 20

when no more individuals of a species are left anywhere in the world the species is …

Answer 20

Extinct

Question 21

Contains 23 chromosomes

Answer 21

Sperm cell

Question 22

Contains 46 chromosomes

Answer 22

Embryonic cell

Question 23

What do plants compete for

Answer 23

Light and minerals

Question 24

What do animals compete for

Answer 24

Mates and food

Question 25

What do both animals and plants compete for

Answer 25

Water and space

Question 26

A particular place or role that an organism has in an ecosystem

Answer 26

Niche

Question 27

The interaction between plants, animals and their habitat in a particular location

Answer 27

Ecosystem

Question 28

The area in which an organism lives

Answer 28

Habitat

Question 29

The collection of different types of organisms present in an ecosystem

Answer 29

Community

Question 30

What are veins in a leaf needed for

Answer 30

Transport of water and sugar

Question 31

What is wax in a leaf

Answer 31

On top surface of leaf, reduces water loss

Question 32

What are chloroplasts

Answer 32

Contains the green pigment (colour) called chlorophyll

Question 33

What are stomata

Answer 33

Holes in lower surface of leaf

Question 34

What is photosynthesis

Answer 34

The process plants use to make their own food, glucose.
In photosynthesis, carbon dioxide and water react together to make glucose and oxygen.

Question 35

What is anaerobic respiration

Answer 35

Chemical reaction that takes place without oxygen.
Glucose is converted into lactic acid and energy is released.

Question 36

What is chemosynthesis

Answer 36

Reaction performed by bacteria, using energy transferred from chemical reactions to produce glucose.

Question 37

What is aerobic respiration

Answer 37

Chemical reaction where glucose reacts with oxygen to release energy, carbon dioxide, and water.

Question 38

What is chlorophyll

Answer 38

Chlorophyll is a pigment that gives plants their green color, and it helps plants create their own food through photosynthesis. It is a key component in the process of photosynthesis, which sustains plant life and produces oxygen for the entire planet.