classification

Question 1

define movement

Answer 1

an action by an organism (or part of an organism) resulting in a change of position

Question 2

define respiration

Answer 2

chemical reactions in cells that breakdown nutrient molecules and release energy

Question 3

define sensitivity

Answer 3

ability to detect and respond to stimuli in the internal or external environment

Question 4

define growth

Answer 4

a permanent increase in size

Question 5

define reproduction

Answer 5

process that makes more of the same kind of organism

Question 6

define excretion

Answer 6

removal of toxic material, metabolic waste and excess substances from an organism

Question 7

define nutrition

Answer 7

the taking in of materials for energy, growth, and development

Question 8

define species

Answer 8

a group of organisms that can reproduce and produce fertile offspring

Question 9

define binomial system

Answer 9

an internationally agreed system where the scientific name of an organism is made up of two parts consisting of the genus and species

Question 10

classification systems aim to

Answer 10

reflect evolutionary relationships

Question 11

similar base sequences mean

Answer 11

they are more closely related

Question 12

3 key features of animals

Answer 12

• take in and use organic materials from other organisms for energy
• able to move from one place to the other
• no cell wall surrounding cell membrane

Question 13

3 key features of plants

Answer 13

• make their own food by photosynthesis
• cells are surrounded by cellulose cell wall
• few identifiable organs (flowers, leaves, stem)

Question 14

4 key features of prokaryotes

Answer 14

• unicellular
• no membrane-bound organelles so no true nucleus (DNA is loose in cytoplasm)
• killed by antibiotics
• have cell wall

Question 15

2 key features of protoctists

Answer 15

• mostly unicellular some multicellular
• have membrane-bound organelles (have a true nucleus)!!

Question 16

4 key features of fungi

Answer 16

• chitin cell wall
• have no chlorophyll
• reproduce by producing spores
• made of large number of tubular threads (hyphae) intertwined to form mycelium

Question 17

2 features of virus

Answer 17

• protein coat
• contain genetic material

Question 18

3 key features of fish

Answer 18

• gills for breathing
• covered in scales + fins for movement
• lay jelly-covered eggs in water

Question 19

3 key features of amphibians

Answer 19

• webbed feet
• moist skin
• can live in land and water but always lay eggs in water

Question 20

2 key features of reptiles

Answer 20

• scaly skin
• leathery-shelled eggs on land

Question 21

4 key features of birds

Answer 21

• forelimbs are wings
• warm-blooded
• four-chambered heart
• beak for feeding

Question 22

4 key features of mammals

Answer 22

• produce live young (feed from mammary glands)
• hair on body
• internal fertilisation
• ears with external flaps

Question 23

define vertebrates

Answer 23

animals that have a vertebral column

Question 24

define invertebrates

Answer 24

animals that don’t have a vertebral column

Question 25

2 features of arthropods

Answer 25

- jointed legs - segmented body

Question 26

4 key features of insects

Answer 26

- three pairs of legs - head, thorax, abdomen - one pair of antennae - one or two pairs of wings

Question 27

4 key features of crustaceans

Answer 27

- four pairs of legs - cephalothorax, abdomen - two pairs of antennae - exoskeleton

Question 28

3 key features of arachnids

Answer 28

- four pairs of legs - cephalothorax, abdomen - no antennae

Question 29

2 key features of myriapods

Answer 29

- ten or more pairs of legs (one or two each segment) - one pair of antennae

Question 30

two major divisions of plant kingdom

Answer 30

ferns and flowering plants

Question 31

4 key features of ferns

Answer 31

- don't produce flowers - reproduce by producing spores - leaves are called fronds - green and photosynthesise

Question 32

5 key features of monocotyledons

Answer 32

- one cotyledon in each seed - narrow leaves - parallel veins - petals in threes - fibrous roots

Question 33

5 key features of dicotyledons

Answer 33

- two cotyledons in each seed - broad leaves - network-like branching veins - petals in fours/fives - taproot system