Animals 2 Word Scramble

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Question	Answer
some chordates do not have	gills
an animal whose body temperature changes depending on the environment	ectotherm
the three major groups of fishes are distinguished from one another by the types of ______ they have	skeletons
gills and lungs enable ______ to get into an animal's blood	oxygen
amphibian means	double-life
most snakes have only one	lung
which of the following groups descended from reptiles	mammals and birds
unlike most fishes, sharks cannot	pump water over their gills
small bones called _______ line up in a row to form the backbone	vertebrae
the skeletons of lampreys and hagfishes are made of	cartilage
a _________ helps a bony fish stabilize its body at different depths in the water	swimbladder
___________ are reptiles whose bodies are covered by a protective shell	turtles
most fishes have _____ fertilization	external
a paleontologist is a scientist who studies ____	fossils
during metamorphosis, most salamander larvae lose their _____	gills
an animal in whose bodies are produce internal heat	endotherm
_______ and _____ lay their eggs externally in water	fish, amphibians
all kinds of birds and all kinds of mammals	are endotherms
the difference in _____ above and below a wing causes lift	air pressure
birds usually sit on their eggs to	keep the eggs warm
all kinds of birds	lay eggs
all mammals feed their young with	milk
both a mammal's fur and a bird's feathers function to help the animal	keep warm
_____ feathers trap air next to a bird's body	down
birds can store food in an organ called a _____ before the food goes to the stomach	crop
all mammals are	vertebrates
_____ feathers help a bird keep its balance during flight	contour
the angle and shape of a bird's _____ provide lift	wing
what are four characteristics that all birds share?	endothermic, vertebrate, feathers, lay eggs
what are three adaptations that enable birds to fly?	hollow bones, contour feathers, wing angle
vertebrates with soft, unsegmented bodies that are often protected by a hard outer shell	mollusks
an organ in a mollusk that can crawl, dig, or catch prey	foot
organs that remove oxygen from the water	gills
a system in which the blood is not always inside blood vessels and the heart pumps blood into a short vessel that opens into the body spaces containing the internal organs	open circulatory system
mollusks have _____ symmetry	bilateral
the three major groups of mollusks are ________, _____, and _____	gastropods, bivalves, cephalopods
the larger group of mollusks including snails and slugs and have a single shell or no shell at all	gastropods
animals that eat only plants	herbivores
animals that eat only other animals	carnivores
mollusks that have two shells held together by hinges and strong muscles that include oysters, clams, scallops, and mussels	bivalves
animals that eat both plants and animals	omnivores
an ocean-dwelling mollusk whose foot is adapted to form tentacles around its motuh	cephalopod
cephalopods are the only mollusks with a _____ circulatory system	closed
cephalopods swim by ____ _____	jet propulsion
a tissue that covers internal organs	mantle
the major groups of arthropods are _______, ________, _________ and ________, and _________.	crustaceans, arachnids, centipedes, millipedes, insects
invertebrates that have an external skeleton, a segmented bdoy, and jointed attachemnts called appendages	arthropods
arthros means	joint
pod means	leg
the process of shedding an outgrown exoskeleton	molting
an appendage attached to the head that contains sense organs	antenna
the bodies of arthropods are ______	segmented
an arthropod that has two or three body sections, five or more pairs of legs, and two pairs of antennae	crustacean
_____ includes crayfish and lobster	crustaceans
a process in which an animal's body undergoes dramatic changes in form during its life cycle	metamorphosis
_______ and _______ are arthropods with two body sections and many pairs of legs	centipedes, millipedes
millipede means	thousand feet
centipede means	hundred feet
arthropods with three body sections, six legs, one pair of antennae, and usually one or two pairs of wings	insects
the midsection to which wings and legs are attached	thorax
a process with four diferent stages: egg, larva, pupa, and adult	complete metamorphosis
wings, legs, and antennae form inside a protective covering	pupa
a system has no distinct larval stage	gradual metamorphosis
an egg hatches into a stage which usually looks like the adult insect without wings	nymph
at some point _______ will have a notochord	chordates
a nerve cord that runs down their back, and slits their throat area	notochord
a felxible rod that supports a chordate's back	notochord
a ______ has a backbone that is part of an internal skeleton	vertebrate
many similar bones that the backbone is formed by	vertebrae
the body temperature of most fishes, amphibians, and reptiles is ____ to the temperature of their environment. birds and mammals have a _____ body temperatue that is often warmer than their environment	close, stable
a vertebrate that lives in water and uses fins to move	fish
most fishes are _______, obtain oxygen through gills, and have scales	ectotherms
most fishes have _____ fertilization	external
three major groups of fishes are ____ fishes, _________ fishes, and ____ fishes	jawless, cartilaginous, bony
a vertebrate that is ectothermic and spends its early life in water	amphibian
amphibian means	double life
after beginning their lives in ____, most amphibians spend their adulthood on ____, returning to ____ to reproduce	water, land, water
the larva of a frog or a toad	tadpole
organs of air-breathing vertebrates in which oxygen gas and carbon dioxide gas are exchanged betwen the air and the blood	lungs
chambers of the heart	atria
the specific environment in which it lives	habitat
lay eggs on land	reptiles
an ectothermic vertebrate that has lungs and scaly skin	reptile
organs that filter wastes from the blood	kidneys
watery fluid in which waste is excreted	urine
an egg with a shell and internal membranes that keep the embryo moist	amniotic egg
reptiles have ____ fertilization	internal
both lizards and snakes are reptiles that have skin covered with ______ scales	overlapping
a reptile whose body is covered by a protective shell that includes the ribs and the backbone	turtle
unlike most other reptiles, crocodiles and alligators ____ for their eggs and newly hatched young	care
the hardened remians or other evidence of a living thing that exxisted a long time ago	fossil
the scientists who study extinct organisms, esamine fossil structure and make comparisons to present-day organisms	paleontologists
vertebrates are a subrgroup of	chordates
a fish	has fins
a tadpole is the larva of a	frog or toad
a reptile	lays eggs
layers of clay, sand mud, or silt harden and become	sedimentary rock
a bony fish uses its _____ to stsabilize its position in the water	swim bladder
_______ obtain oxygen through gills and have scales	fishes
an _______ is a characteristic of reptiles	amniotic egg
________ are scientists who study fossils	paleontologists
how do fishes reproduce	externally

Created by: stephaniedo