Science 7d: Variation and Classification

Vertebrates
1. have a spinal column
2. have an exoskeleton
3. do not have an endoskeleton
4. have segmented bodies
Amphibians
1. have moist skin, breed in water
2. have moist skin, breed on land
3. have dry, scaly skin
4. have gills
Reptiles
1. have dry, scaly skin, breed on land
2. have dry, scaly skin, breed in water
3. are always cold
4. are invertebrates
Vertebrates have
1. a spinal column
2. segmented bodies
3. 6 legs
4. a hard outer shell
Invertebrates include
1. molluscs, arthropods, crustaceans
2. molluscs, amphibians, arthropods
3. reptiles, amphibians, crustaceans
4. mammals, insects, jellyfish
Reptiles
1. have dry, scaly skin
2. need to breed in water
3. have smooth, moist skin
4. do not lay eggs
a person's inherited features include
1. eye colour, blood group, shape of nose
2. eye colour, blood group, hair length
3. eye colour, hair colour, hair length
4. blood group, hair length, shape of nose
a person's environmentally influenced features include
1. hair length, sun tan, scars
2. hair length, scars, blood group
3. hair colour, blood group, eye colour
4. eye colour, blood group, hair length
a person's "gradual" features include
1. height, body weight
2. height, eye colour
3. eye colour, hand span
4. hand span, hair colour
Carl Linnaeus
1. worked out a way of naming all living things
2. discovered penicillin
3. invented the light bulb
4. developed a system of classifying plants
the equation for respiration is
1. sugar + oxygen --> carbon dioxide + water + energy
2. water + oxygen --> carbon dioxide + sugar + energy
3. sugar + oxygen + energy --> carbon dioxide + water
4. sugar + oxygen + water --> carbon dioxide + energy
reptiles
1. breed on land
2. breed in water
3. give birth to live young
4. do not lay eggs
amphibians
1. breed in water
2. breed on land
3. give birth to live young
4. do not lay eggs
mammals
1. give birth to live young
2. lay eggs
3. breed in water
4. are invertebrates
fish are
1. vertebrates
2. invertebrates
3. amphibians
4. arthropods
arthropods have
1. 6 or more legs
2. 6 legs
3. 8 legs
4. no legs
spiders are
1. arthropods
2. insects
3. molluscs
4. vertebrates
molluscs
1. do not have segmented bodies
2. have 6 legs
3. have segmented bodies
4. all have shells
crustaceans
1. have a chalky outer skeleton
2. have 8 legs
3. are not arthropods
4. all live in water
birds
1. are vertebrates
2. are invertebrates
3. are cold-blooded
4. are all herbivores
fish
1. can only live if there is oxygen in the water
2. do not need oxygen in the water
3. give birth to live young
4. must come up to the surface to breathe
members of the same species
1. can breed together
2. cannot breed together
3. can breed but will produce infertile offspring
4. share few features in common
members of the same genus
1. may be able to breed together
2. cannot breed together
3. share all features in common
4. can breed but may produce infertile offspring
the scientific naming system for organisms is called the
1. binomial system
2. species system
3. genus system
4. classifying system
birds
1. lay eggs with hard shells
2. lay eggs with soft shells
3. lay eggs in water
4. lay eggs with no shells
most reptiles
1. lay eggs with soft shells
2. lay eggs with hard shells
3. lay eggs in water
4. lay eggs with no shells
mammals
1. feed young on milk
2. feed young on solid food
3. lay eggs with hard shells
4. do not feed young on milk
amphibians
1. lay eggs without shells
2. lay eggs with hard shells
3. lay eggs with soft shells
4. lay eggs on land
reptiles have
1. dry scaly skin
2. damp skin
3. smooth skin
4. slimy skin
amphibians have
1. smooth, moist skin
2. scaly, moist skin
3. dry, scaly skin
4. dry, smooth skin