Characteristics

Question 1

Sponges Characteristics

Answer 1

covered in pores
Invertebrates
Ectothermic
Heterotrophic
Mature sponges are sessile
Asymmetrical

Question 2

Animal characteristics

Answer 2

heterotrophic
Multicellular
No cell walls so they have a skeletal structure

Question 3

Characteristics of worms

Answer 3

invertebrates
Ectothermic
Bilateral symm.
Long narrow bodies with no legs
Distinct anterior and posterior
Simplest animal with central nervous system

Question 4

Nematoda (roundworms)

Answer 4

tube within a tube
Skin secretes a cuticle
Complete digestive system
Simple nervous system
Sexual reproduction

Question 5

Annelida (segmented worms)

Answer 5

Tube within a tube; rings
Skin secretes mucous
Complete digestive system
More complex nervous system
Sexual reproduction; hermaphroditic (both female and male in a single worm)

Question 6

Flukes

Answer 6

parasites
Digestion : one opening
Simple nervous system
Two hosts needed one for adult and one for larva

Question 7

Tape worms

Answer 7

parasites
Digestion: absorbs digested food of host
Simple nervous system
Two hosts needed one for larva and one for adult

Question 8

Planarians

Answer 8

free living
Digestion: one opening
Simple nervous system + eye spots

Question 9

Chilopada: centipedes

Answer 9

one pair of legs per segment
Flattened body
Predators with claws

Question 10

Diplopoda: Millipedes

Answer 10

Two pairs of legs per segment
Round body
Eats decaying plants

Question 11

Crustaceans

Answer 11

Respiratory system: via diffusion or through gills
Complete digestive system
Open circulatory system
Nervous system: 2 ganglia and a nerve chord
Reproductive system: external fertilization
Aquatic
2 body segments
2 compound eyes
3 pairs of mouthpiece parts
5 pairs of legs
Swimmerets
Telson

Question 12

Bivalvia

Answer 12

two shelled
Hinged teeth
Adductor muscles
Umbo small bulge on the two shells near the hinge
Nacre (creates pearl)
Mantle
Gills
Siphon

Question 13

Molluscs

Answer 13

marine animals
Bilateral symm.
Soft bodies
Muscular foot
Visceral mass containing vital organs
Mantle skin like organ covering visceral mass

Question 14

Echinoderms

Answer 14

marine
Pentaradial symm.
Water vascular system
Endoskeleton made of ossicles
Closed digestive system
Open circulatory system
Nerve net
Sexual reproduction
Regeneration

Question 15

Cnidarians

Answer 15

sac like soft bodies with radial symm.
2 germ layers
Nerve and contractile cells
Two forms polyp and medusa
Tentacles with stinging cells
Central digestive system with a mouth
No circulatory system or respiration system

Question 16

Aves: birds

Answer 16

vertebrates
Pneumatized bones (hollow and light)
Air sacs
4-chambered heart
Wings
Feathers of keratin
Beaks
Hallux ( backwards toe used for grasping)
Oviparous
Endothermic
High metabolism
Powerful eyesight
Migration

Question 17

Mammals

Answer 17

hair
* provides insulation, regulates body temperature, protects skin, can serve as camo, provides sensory feedback
Two pairs of limbs (exception, whale order)
Circulatory system
Lungs
Reproduce via internal fertilization

Question 18

Echinoderm

Answer 18

spiny skinned animals
Marine
Three germ layers
Water vascular system
Endoskeleton
Regeneration: ability to replace damaged areas

Question 19

Amphibians

Answer 19

vertebrates
Endoskeleton
Ectothermic
Cloacal opening
3-chambered heart
Central nervous system
Life cycle: egg, larva, adult
Herbivore them carnivore
Gills then lungs and skin

Question 20

Reptiles

Answer 20

scales
Ectothermic
Tetropods or no legs
Lungs
3 chambered heart except for crocodilia order

Question 21

Sphenodontia: tuatara

Answer 21

lives over 100 years
Nocturnal
No external ears