Quarterly Test 4 Flashcards
If a flatworm has complex nervous and digestive systems, is it mostly free-living or parasitic?
free-living
How is it possible for animals to communicate with each other without having language? For what reasons do animals communicate?
communication can occur whenever one individual passes information to another. This information can be a sound, odor, visual display, or touch. Animals use these signals to communicate such things as warnings, readiness to mate, and the boundaries of a territory.
State the five characteristics that set mammals apart from other vertebrates.
hair covering the skin; reproduce with internal fertilization and usually viviparous; nourish their young with milk secreted from specialized glands; four-chambered heart; endothermic
What does a fish use to feel vibrations in the water?
lateral line
Why do cnidarians not need respiratory or excretory systems?
their body walls are so thin that gases diffuse right through them
What are three functions of tube feet and the water vascular system in echinoderms?
locomotion, respiration, circulation, and feeding
State the five characteristics that set reptiles apart from other vertebrates
covered with tough, dry scales; ectothermic; breath with lungs throughout their lives; three-chambered heart with a ventricle that is partially divided; produce amniotic eggs covered with a leathery shell
State the six characteristics that set birds apart from other vertebrates.
endothermic; heart with four chambers; toothless bill; oviparous; laying an amniotic egg which is covered in a lime-containing shell, covered with feathers; and skeleton composed of porous, lightweight bones
What roles do amebocytes play in the life of a sponge?
help digest and transport nutrient, they help carry waste to be excreted, they bring necessary gases such as oxygen to the cells, and they form the spicules or spongin
What happens when a crayfish loses a limb?
the injury gets sealed off to prevent bleeding, and then a new limb regenerates
Why do arthropods molt?
their exoskeletons get too small for their growing bodies
Are the vast majority of animals vertebrates or invertebrates?
invertebrates
What are the four general characteristics of vertebrates?
endoskeleton, closed circulatory system, nervous system with a lobed brain, individual male and female sexes
A female mates with a male and then lays eggs that develop and hatch. What type of fertilization is this? What kind of development is this?
internal fertilization; oviparous
What are the types of learned behavior?
habitation, imprinting, and conditioning
