Animals that must eat other organisms to gain the nutrients they need to survive are called
heterotrophs
animals that can reproduce are diploid, meaning that they have one set of
chromosomes from each parent
in what way can animals with bilateral symmetry be divided
in 2
in protostomes, first the mouth is formed and then the
anus
the sand dollar has what symmetry?
radial
Sponges' inability to move from where they are attached means that they are
sessile
Sponges are the only animals that have no
tissues
Sponges reproduce asexually by
budding
what is the main difference between the sponge and worm
the sponge does not have tissue
what does the gastrovascular cavity of a cnidarian do
digests
What is the mesoglea?
a non-cellular jellylike material in cnidarians
what are tapeworms
worms that can live in the digestive tract of an animal or person
how could you describe a planarian
flat wedge shape body
In mollusks, blood is pumped through the
radula
what is a radula
used for drilling holes and feeding
Roundworms that feed on their host's blood are
parasites
Guinea worm infections can occur when a person
drinks contaminated water
which arthropod went extinct
trilobites
the main disadvantage of an exoskeleton i that it
cant grow
which term describes the process that arthropods use to develop a new exoskeleton
molting
what are mandibles
appendages used to crush and bite food before ingestion
Sessile filter feeders wrapped in a heavily calcified shell are known as
barnacles
which body part covers a cristaceans cephalothorax
carapace
which mouth part do chelicerates lack
antennae and mandibles
when spiracles on an arachnids body open they let in
oxygen
which adaptation enables arachnids to remove wastes
malpighian tubules
scorpions and spiders share the ability to
inject venom
which chelicerate are parasites of other animals
ticks
Insects that look like miniature adults when they hatch have a pattern of development called
incomplete metamorphosis
which adaptation was most important when enabling insects to live on land
ability to control water + gas exchange
all insects have three
pairs of legs / body parts
what term describes an organism that carries a disease from one host to another
vector
insecticides are chemical compounds that
kill insects and other arthropods
what is an unintended consequence of insecticide
it increases the growth of harmful insect populations
The entire surface of an arthropod's body is covered by a protective
cuticle
Barnacles, isopods, and tongue worms are all examples of
crustaceans
Which of the four animals shown below is a chelicerate?
da spider
how many distinct body sections do crustaceans have
3
Insect wings are extensions of the
exoskeleton
an organism that carries a disease from one host to another is known as a
vector
what is the arrow on the lobster pointing to
chelliped
an animal that has eight legs fang like pincers, and the ability to produce silk is a(n)
arachnid
which of the following are the most commonly known myriapods
centipedes, millipedes
which echinoderms are the only member of the class Holothuroidea
sea cucumbers
what is the term for the plates that form an echinoderm's skeleton?
ossicles
what is the function of the water vascular system
store water for circulation and to fill tube feet
An echinoderm's radial canals that extend along each arm are part of its
water vascular system
sea stars feed by
predatation of small animals
a sea star uses its tube feet to
move around