Animal Characteristics
What is an endotherm?
an animal that can regulate its inner body temperature (e.g. bird, mammal, etc.)
What are characteristics of all mammals?
they have hair, they have mammary glands, they produce milk
Do invertebrates have a skeleton? If so, what kind?
exoskeleton
the only invertebrates that can fly
insects
What do all vertebrates have?
a backbone, endoskeletons, and skulls
Most animals are ___
(invertebrates or vertebrates)
invertebrates
Why do snakes need sunlight to warm their bodies after a cold night?
because they are ectotherms
A lobster is an invertebrate. Why?
because it has no backbone
invertebrates without symmetry, cephalization, or guts
sponges
Why are lampreys and hagfish different from other fish?
they have no jaws
What is the difference between an incomplete gut and a complete gut?
Incomplete gut has only one opening, so food and waste pass through the same opening. A complete gut has two openings, so food and waste pass through different openings.
Identify each of the following mammals as marsupial, monotreme, or placental.
dog
echidna
kangaroo
opossum
platypus
whale
dog--placental
echidna--monotreme
kangaroo--marsupial
opossum--marsupial
platypus--monotreme
whale--placental
What animal is a "pore-bearer"?
sponge
long, soft-bodied animals with bilateral symmetry
worms
Sharks and rays are examples of what kind of fish?
cartilaginous
What type of symmetry do jellyfish have?
radial
Label the following animal reproduction types with some, none, or all.
sexually ___
asexually only ___
both ___
Sexually--all
Asexually only--none
Both--some
What are arthropods?
invertebrates with jointed appendages
spiders, scorpions, and other arthropods with two body segments and eight legs
chelicerates
What is amphibian skin characterized by?
the ability to exchange oxygen and carbon dioxide
What is a characteristic of all animals?
They are consumers.
Evolutionary taxonomists classify or reclassify animals on what basis?
their supposed evolutionary relationships or common ancestors
What are some examples of arthropods?
butterfly, crab, scorpion
invertebrates (except for cephalopods) that rely on hard shells for protection
mollusks
What characteristics do crocodiles share with other reptiles?
living near water, shedding outer layers, having teeth
What are chordates?
animals that a some point during their lives have a notochord
What are cnidocytes?
stinging cells that cnidarians use to capture food
jellyfish and coral
cnidarians
What structure attaches an embryo to a placenta?
umbilical cord
What is cephalization?
It means an animal has sensory organs and a brain concentrated at one end.
What is a chelicera?
a type of mouthpart
arthropods with either eight or ten legs
crustaceans
Why are squids not classified with the vertebrates?
Its endoskeleton does not include vertebrae, and it is not made up of living cells.
Baraminology comes from the Hebrew words meaning "___".
created kind
Leeches, a type of segmented worm have ___.
repeating body division that contain the same set of organs
sea urchins and other marine animals with radial symmetry and spiny skin
What are some differences between snakes and lizards?
1) Snakes have no legs, while lizards have four legs 2) Snakes do not have ear openings, while lizards do 3) Snakes have immoveable eyelids, while a lizards have moveable eyelids