bio 2 exam q

Animals have a coelom. T/F

true

Animals share a common origin with choanoflagellates. T,f

true

Plankton consists mainly of microscopic organisms that float in the water. t/f

true

The cephalic end of an animal is toward its head. t/f

true

What is an ectotherm?

uses behavioral stratergies to adjust body temperatures

Radial Symmetry is characteristic of?

Cnidarians

Which was the primary challenge animals faced in adapting to life on land?

Desiccation

The state of torpor caused by lack of food or water during periods of high temperature is called

Estivation

What is the key characteristic that defines the Ecdysozoa clade?

animal molts

As bilateral symmetry evolved, natural selection led to which of the following?

cephalisation T

Give an example of a deuterostome?

chordate

What germ layer gives rise to the outer covering of the body and the nervous system?

ectoderm

The lining of the digestive tube is formed from:

endoderm

The vast majority of bilateral animals have a fluid-filled body cavity, or coelom. Which of the following is an exception?

flat worms

Which of the following explains why fewer animals live in freshwater than in the ocean?

freshwater is hypotonic to tissues

To include your eyes and ears in the same section, you would need to cut your body in which plane?

frontal plane

What is true about stress

it causes a body response in an attempt to remain homeostasis

Which of the following initiates a homeostatic response?

stressor

Which term best explains why collagen fibers are abundant in tendons?

strength

What do exocrine glands do

Release secretions into ducts which open onto an epithelial surface.

Epithelial tissues are attached to the underlying tissues by a basement membrane. True or False

True

Which example represents a structural adaptation that an endotherm might make to maintain body temperature?

feathers

A grasshopper belongs in the Ecdysozoa clade because of its ability to:

molt

Which organ system has the homeostatic function of helping regulate volume and composition of blood and bloody fluids?

urinary system

A bilaterally symmetrical animal has how many axes?

3

As a contemporary scientist, which of the following would you use as evidence to propose changing the traditional animal phylogenies?

Molecular data

Which animal phylum has an asymmetrical body plan?

Porifera (sponges)

Which of the following characteristics about animals is FALSE?

animals cant respond to stimili

The head end of an animal is known as its:

anterior end

The main structural protein in the extracellular matrix and an important shared derived characteristic of animals is:

collogen

Tissue that contains fibroblasts and a great deal of intercellular substance is?

connective tissue

ectothermic animals ____

depend on heat from an external environment to adjust their body temperature

Which tissue covers or lines a cavity?

epithelial

The four basic animal tissues are

epithelial, connective, muscle, nervous

Which of the following is NOT an adaptation needed for living on land?

external respiratory services

A serous membrane lines a body cavity that opens to the outside of the body.

false

Cuboidal epithelial cells are thin, flat cells. T/F

false

Is the ability to maintain location an adaptation to terrestrial living. T/F

false

When comparing the body's response to changes in temperature and a home HVAC system, which part of the body corresponds to the thermostat?

hypothylamus of the brain

A marine invertebrate placed into freshwater would have difficulty surviving because:

it would have difficulty with osmo regulation

Bilateral symmetry and cephalization are adaptations for which of the following?

locomotion

A coelom is a body cavity completely lined with?

mesoderm

What is torpor?

metabolic rate increases

Most homeostatic functions in the body are maintained by?

negative feedback systems

The type of tissue illustrated in the accompanying figure is

pseudostratified (page 825)

What is the Cambrian Radiation?

rapid evolution of new body plans

Which of the following protostomes has bristles, called setae, which provide traction during crawling?

sand worm

For gas exchange to occur quickly and efficiently, which type of epithelium must be present on all respiratory surfaces?

simple squamous

Protostomes are characterized by?

spiral cleavage

One true characteristic of all animals is that they:

they are all heterotrophs

A(n) _______ is a group of closely associated similar cells

tissue

The first land animals likely moved onto land how long ago?

450 million years ago

The ability of animals to adjust to seasonal changes in temperature is called.

acclimatization

The evolution of animals will be better understood as what?

as biologists collect more data

The epidermis of a nematode is derived from the:

ectoderm

Tissue that contracts and is striated and involuntary would most likely be found where?

in the heart

Thermoregulation in ectotherms can be accomplished by four of the following. Which action will not result in thermoregulation?

increasing internal metabolism

Which statement best supports why animals most likely evolved in the ocean?

internal fluid and salt was easy to maintain

Lungs absorb oxygen from inhaled air, and the small intestine moves ingested material through the digestive tract and absorbs nutrients from ingested food. Which statement describes the type of epithelium you would expect to line each of these surfaces?

lungs lined by simple squamous epithelium small intestine lined by simple columnar

A group of associated tissues is known as a(n)

organ