Elephantiasis is caused by a blockage of the flow of
Exoskeletons are most characteristic of which of the following?
Molting in arthropods involves primarily a change in
Arthropods usually detect odors with their
All of the following adaptations have contributed to the success of the insects EXCEPT
low reproductive capacity
Which of the following is the main organ for waste removal in the insects?
Which of the following spiders has enough venom to kill a person?
both black widow and brown recluse
Which arthropod is responsible for the most human deaths?
Which are deuterostomes?
Which group is strictly marine, with no freshwater or terrestrial forms?
Four of the five answers listed below are members of a common group. Select the exception. A. Jellyfish B. Hydra C. sea squirts D. Corals E. sea anemones
C. sea squirts
Four of the five answers listed below are parasites. Select the exception. A. planaria B. fluke C. nematodes D. leech E. tapeworm
Four of the five answers listed below are descriptive of annelids. Select the exception. A. first segmented form B. possess nephridia C. have jointed appendages D. have setae E. have a complete gut with a closed circulatory system and coelom
C. have jointed appendages
Four of the five answers listed below are arthropods. Select the exception. A. Barnacles B. Crabs C. Insects D. Octopus E. Ticks
Four of the five answers listed below are crustaceans. Select the exception. A. crabs B.shrimps C. lobsters D. centipedes E. barnacles
The notochord is most closely associated with the
The most primitive vertebrates are members of the group of
In fishes ancestral to land vertebrates, pouches in the gut wall developed into
The feeding habits of lampreys are best described as
Sharks, rays, and skates belong to what group?
In true fishes, the gills primarily serve which function?
Amphibians are most dependent on an aquatic environment for
The mass extinction at the end of the Cretaceous was probably caused by a(an)
The only reptiles with four-chambered hearts are the
Adaptations for flight in birds include all but which of the following?
Which feature do mammals share in common with all vertebrates?
a column of individual backbones
Mammals are the only vertebrates that possess
Live birth is characteristic of
Humans are least closely related to the
Which of the following can be included in the group called "hominids"?
Bipedalism is most highly developed in
The evolutionary trend of bipedalism refers to the
human ability to habitually walk on two feet
The most recent level of evolution in primates is considered to be in
behavior and culture
The earliest primitive primates resembled the modern
The early hominid fossils are found in
The primate fossil named Lucy was a(n)
It is thought that the earliest tools were employed by hominids to
facilitate the processing of food
The first to make use of controlled fires were
Fossil evidence suggests the earliest members of the genus Homo were
social, omnivorous, and tool makers
The species Homo sapiens is thought to be how many years old?
About 40,000 years ago, what kind of evolution replaced biological evolution in the shaping of modern humans?
A hominid of Europe and Asia that became extinct about 35,000 years ago was
Four of the five answers listed below are members of a common group. Select the exception. A. Lancelet B. jawed fish C. jawless fish D. sea squirt E.Squid
Four of the five answers below are members of the same group. Select the exception. A. angel fish B. Catfish C. Hagfish D. Salmon E.Tuna
Four of the five answers below are principal characteristics of all chordates. Select the exception. A. post-anal tail B. bony vertebra C. notochord D. dorsal nerve cord E. pharyngeal gill slits
B. bony vertebra
A community of cells and intercellular substances that interacts in one or more tasks is
Extracellular fluid would NOT include
Which of the following tissues is(are) the main transport tissues in plants?
phloem and xylem
amount of sunlight temperature variations water availability
Which are examples of integrators?
brain, spinal cord
Which are examples of effectors?
The control of the temperature of the body is an example of which of the following?
both a homeostatic mechanism and a negative feedback system
Which involves a positive feedback stimulation?
Circadian rhythms are cycles that occur approximately
once a day
What term is used for programmed cell death?
Four of the five answers listed below are related to ground tissue. Select the exception. A. Pith B. Xylem C. Sclerenchyma D. Parenchyma E. Collenchymas
Four of the five answers listed below are functions of roots. Select the exception. A. Support B. synthesis of food C. absorption of water and minerals D. conduction of water and solutes E. Anchorage
Four of the five answers listed below are related to roots. Select the exception. A. Adventitious B. Tap C. fibrous D. lateral E. insectivorous
Four of the five answers listed below are parts of a leaf. Select the exception. A. stoma B. cuticle C. mesophyll D. node E. petiole
Which of the following is not part of a shoot system?
The most common tissue in plants is ____ tissue.
Perpetually young tissues where cells retain the ability to divide are
Which of the following is most involved in food storage?
Increases in stem length occur at the
Cells that are the main water-conducting cells of a plant are
tracheids and vessel members
Gaseous exchange occurs in plants through these structures in the epidermis.
Vascular bundles contain
xylem and phloem
The stalk that supports the individual dicot leaf is the
shed their leaves once a year
The main photosynthetic area of a leaf is composed of
Leaf veins are primarily what kind of tissue?
Most monocots have numerous ____ roots arising from the stem.
Extensions of root epidermis used to increase absorption are called
Which gives rise to lateral roots?
Annual growth rings are formed in woody stems principally through the activities of the
Plants in general require a total of how many essential elements for their growth and survival?
The inorganic soil constituent with the finest particles is
____ 3. What is the organic constituent of soil called?
Topsoil is found in
The most productive soil is
Nodules found on the roots of leguminous plants are involved in supplying which element for the plant?
increase plant growth are symbionts allow a plant to absorb more water increase the surface area for absorption of water and minerals
The relationships of organisms in root nodules and mycorrhizae can be described as
The Casparian strip is associated with the
The water and minerals absorbed by the roots usually first enter the
Mineral uptake in plants occurs by way of
Most of the water that enters the plant
is lost through transpiration
Which part of the theory of water transport states that hydrogen bonding allows water molecules to maintain a continuous fluid column as water is pulled from roots to leaves?
Which of the following causes transpiration?
the drying power of air
Most of the water moving into a leaf is lost through
Of all the water moving into a leaf, about what percent is used in photosynthesis, membrane functions, and other activities?
The waxy covering of the leaf is the
If the cuticle is removed from a leaf, it will
lose water and wilt
The openings in leaves that function to exchange gases are called
The cells that surround stomata are
The hormone that causes water-stressed plants to close their stomata is
ABA (abscisic acid)
In CAM plants,
stomata open at night
Ozone damage is lower in plants with high levels of vitamin
Carbohydrates are stored in plants in the form of
Movement of soluble organic material through plants is known as
Sugars are usually carried throughout the plant in which tissue?
Insects used to study the process of translocation in plants are the
The source region in the pressure flow explanation of phloem transport is most often the
Large pressure gradients arise in sieve tube systems by means of
The male part of a flower is the
The various flower parts are attached to the
Which forms the outermost whorl of flower parts?
The evolution of flowers and their insect pollinators is an example of
Insects are attracted to flowers by
nectars specific colors specific color patterns floral odors
Bees see flower patterns in what wavelength that humans cannot see?
Foul-smelling flowers may be pollinated by
beetles and flies
The process during which the diploid set of chromosomes becomes haploid is
are haploid give rise to the embryo sac will develop into the gametophyte are female rather than male
The female gametophyte is the
The primary function of the endosperm is
Pollination occurs when pollen contacts the
The endosperm is usually
The zygote is
What kind of fruit is formed from carpels of several associated flowers?
Fruit is produced from the development of the
Each of the following is a simple fruit EXCEPT
Which of the following fruits is not classified as a berry?
The primary purpose of fruits is
dispersing the seeds
Strawberries reproduce by
The most critical factor affecting the initiation of seed germination is A. increasing day length B. oxygen availability C. water absorption D. Warmth E. none of these is most critical; all are equal
E. none of these
The resumption of growth after a period of arrested embryonic development is
The plant hormone that promotes cell division is
The plant hormone that promotes fruit ripening is
The plant hormone that promotes dormancy in plants and seeds is
The plant hormone thought to be involved with tropism is
Synthetic auxins are used as
The biological clock of plants is set when ____ absorbs light
Day-neutral plants are
able to bloom when they are old enough
All the processes that lead to the death of a plant or any of its organs are called
Embryonic cells that have the potential to become any cell type are called
The tissue that lines internal surfaces of the body is
Epithelial cells are specialized for all the following functions EXCEPT
Human skin is primarily what type of epithelium?
Adhering and gap junctions are found at the
The secretion of tears, milk, sweat, and oil are functions of what tissue?
Which epithelial cell is best suited for diffusion?
Which of the following is not included in connective tissues?
What type of tissue is blood?
An extracellular ground substance is characteristic of
Fibroblasts are characteristic of what tissue type?
Dense fibrous tissues that connect muscle to bone are called
Collagen fibers are characteristic of which tissue?
Bones are linked together at skeletal joints by
Cartilage is found
in the nose at the ends of bones in the external ear between vertebrae
If its cells are striated and fused at the ends so that the cells contract as a unit, the tissue is
Muscle that is not striated and is involuntary is
Which muscle type is considered voluntary?
Rapid communication throughout the body is accomplished through
What neurons in the CNS integrate information?
Which of the following represents the correct hierarchy of organization in the human body?
cells tissues organs organ systems
Of the following organs, which is NOT in the abdominal cavity?
Muscle cells are produced by
The lining of the intestinal tract is produced by
The endocrine system functions in
hormonal control of body functioning
Maintaining the volume and composition of body fluids is the direct responsibility of which system?
Which system is involved with body movement?
Integration of body functions is controlled by the
both nervous and endocrine systems
Which system produces blood cells?
The protein that helps make vertebrate skin tougher and more waterproof is
The two major divisions of the vertebral nervous system are the
central and perphial nervous systems
The peripheral nervous system is further divided into the ____ and ____ nervous systems.
Interneurons are mostly found in the ____ nervous system.
The single long process that extends from a typical motor nerve cell is the
Within a single neuron, the direction an impulse follows is
dendrite cell body axon
At rest, a nerve cell has a high concentration of ____ inside and a high concentration of ____ outside.
The resting potential of a neuron is approximately
The membrane-bound enzyme system that restores and maintains the resting membrane potential is which of the following pumps?
Which is a junction between two neurons?
Which bridges the gap between a neuron sending a message and the neuron receiving it?
Active chemicals found in cigarettes, tea, coffee, and soft drinks are examples of which of the following?
Pain relievers that mimic endorphins and enkephalins are
Substances that alter sensory perception, cause disorientation, and inhibit the ability to perform complex tasks are
Alcohol acts as a
By definition, a "nerve" is
What is the name of the condition in which there is a deterioration of the myelin sheaths of the neurons in the spinal cord?
In the knee-jerk reflex arc, the synapse between a sensory neuron and a motor neuron occurs where?
within the spinal cord
The autonomic subdivision consists specifically of
parasympathetic and sympathetic nerves
Signals from the parasympathetic nervous system cause which of the following?
increase in digestive system movements
During the "fight-flight" response, which of the following would be in use?
sympathetic nervous system and epinephrine
The brain and spinal cord are covered by the protective
The part of the brain that deals with the basic drives such as hunger, sex, and thirst is the
The center for balance and posture is the
The part of the brain that controls the basic responses necessary to maintain life processes (breathing, heartbeat) is the
The center of consciousness and intelligence is the
The left hemisphere of the brain is responsible for
The right hemisphere of the cerebrum is specialized for
Which area of the brain helps to translate thoughts into speech by controlling tongue, throat, and lip muscles?
The occipital lobe of the brain is responsible for