What characteristic gives organisms in the phylum Porifera their name?

The pores that cover the outside of their bodies.

Which of the following would inhibit the growth of most non-photosynthetic bacteria?

Exposure to light and UV radiation

Autotrophic bacteria:

Produce their own food using solar or chemical energy.

Molting is the process by which arthropods:

shed their old exoskeleton for a new one.

What characteristic distinguishes many corals from other members of the phylum Cnidaria?

The ability to make an exoskeleton of calcium carbonate.

Which of the following statements about the bird skeleton is untrue?

The skeleton is flexible because none of the bones are fused.

Which of the following statements is true regarding sea star symmetry?

Adults have radial symmetry, larvae have bilateral.

As a group, bacteria are:

Among the oldest groups of organisms on the planet.

What is the main purpose of mycorrhizal fungi?

They grow with plant roots, helping the plant absorb water and nutrients.

Which of the following is NOT one of the adaptations that allowed the reptiles to live successfully on land?

opposable thumb for manipulating tools

Crayfish are typically found in what type of habitat?

Freshwater – lakes and streams.

How do insects obtain oxygen and get rid of carbon dioxide?

Through a system of tubes called tracheae.

Squid and octopus can move rapidly by:

jet propulsion of water through their siphons.

Why must arthropods molt?

It allows the organism to grow larger.

Why do lizards, turtles, and other reptiles spend a lot of time basking in the sun?

They are raising their body temperature to allow more activity.

Which of the following correctly describes sea star reproduction?

Separate sexes, external fertilization.

How does a hydra move to a new location?

It does both A and B. (red and blue)

Which of the following statements about Kingdom Protista is true?

Protists are classified according to how they obtain food.

The crayfish swims by:

rapidly contracting abdominal muscles to propel the crayfish backward.

The crayfish uses its large pinchers or “chelipeds” to:

capture food and fight other crayfish.

Which of the following statements about animals is true?

Animals ingest food molecules made by other organisms.

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Bio II Final MCQ's

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Answers

1
What characteristic gives organisms in the phylum Porifera their name?
The large digestive cavity in the middle of their bodies.
The porous bones that form their skeletons.
Special stinging cells they use to subdue their prey.
The pores that cover the outside of their bodies.
2
Which term describes a process in which 2 bacteria hook together & transfer a copied plasmid from 1 bacterium to another
Transformation
Translation
Conjugation
Transduction
3
Clam shells are formed by the
Intestine.
Heart.
Mantle.
Foot.
4
Feathers are composed mainly of
albumen
keratin
chitin
cellulose
5
What types of protists are considered “fungus-like”?
Algae
Protozoa
Mushrooms
Slime-Molds
6
Which of the following would inhibit the growth of most non-photosynthetic bacteria?
A plentiful supply of food
Temperatures around 90 ºF
Exposure to light and UV radiation
Moisture
7
Autotrophic bacteria:
Produce their own food using solar or chemical energy.
Feed from dead organisms.
Cause diseases.
Feed on living organisms.
8
Which is not a form of fungi reproduction?
Spore formation
Self-pollination
Budding
Conjugation
9
In squid and octopus, the foot is modified to form:
gills
an endoskeleton
a ring of tentacles
legs
10
Molting is the process by which arthropods:
shed their old exoskeleton for a new one.
excrete wastes.
mate and lay eggs.
obtain and digest food.
11
What characteristic distinguishes many corals from other members of the phylum Cnidaria?
Stinging cells called cnidocytes.
A gastrovascular cavity for digesting food.
Tentacles are arranged radially around a central mouth.
The ability to make an exoskeleton of calcium carbonate.
12
The class Chondrichthyes includes
skates, sharks, and rays
jawless fish like lampreys and hagfish.
frogs, toads, and salamanders
bony fish, like goldfish and perch.
13
Which organism is not an echinoderm?
Marine Coral
Sand Dollar
Feather Star
Sea Cucumber
14
Which of the following statements about the bird skeleton is untrue?
The skeleton is flexible because none of the bones are fused.
The bones are lighter than those of non-flying animals.
Air sacs from the respiratory system penetrate some of the bones.
Many of the bones are thin-walled and hollow.
15
What system did Linnaeus use, which uses genus and species classification to create a unique name for every species?
Binomial Nomenclature
Polynomial Nomenclature
Trinomial Nomenclature
Monomial Nomenclature
16
Which of the following statements is true regarding sea star symmetry?
Adults have radial symmetry, larvae have bilateral.
Adult and larvae have radial symmetry.
Adults have bilateral symmetry, larvae have radial.
Adult and larvae have bilateral symmetry.
17
What characteristic of yeast cells distinguishes them from other fungi?
They perform photosynthesis.
They are eukaryotic.
They are heterotrophic.
They are unicellular.
18
Hydras reproduce
Mother hydras give birth to live young.
Sexually, adult hydras produce sperm and eggs.
Both A and B. (red and blue)
Asexually, by budding
19
When comparing the energy consumption of a reptile and a mammal of similar size, which will need more energy to survive?
Whichever organism is the oldest.
The reptile
If they are the same size, they both need the same amount of energy.
The mammal
20
Which of the following is an invertebrate chordate?
lamprey
sea star
lancelet
mollusk
21
How many stomachs do starfish possess?
Three
Two
One
Zero
22
As a group, bacteria are:
Not very common or successful.
Among the youngest groups of organisms on the planet.
Large, complex organisms.
Among the oldest groups of organisms on the planet.
23
What is the main purpose of mycorrhizal fungi?
They can infect humans/animals and cause uncomfortable skin rashes.
They are used to make cheese.
The form lichens.
They grow with plant roots, helping the plant absorb water and nutrients.
24
Which of the following is NOT one of the adaptations that allowed the reptiles to live successfully on land?
opposable thumb for manipulating tools
A three-chambered heart
Dry, watertight skin
Shelled eggs that carried their own supply of food and water.
25
Crayfish are typically found in what type of habitat?
Freshwater – lakes and streams.
Parasites in large marine mammals.
Marine – ocean and sea.
Terrestrial – land.
26
Grasshoppers show incomplete metamorphosis. Eggs hatch into:
A worm-like caterpillar.
An adult grasshopper.
A pupa
A nymph.
27
In most adult amphibians, gas exchange occurs through the
gills
B and C . (blue and yellow)
lungs
skin
28
The group of animals containing the most species is the
sponges
insects
primates
mammals
29
The most immediate ancestors of animals were probably
Green plants
Bacteria
Blue-green algae
Colonial protozoans
30
Which order contains insects that possess only one pair of wings?
Hymenoptera
Monoptera
Lepidoptera
Diptera
31
How do insects obtain oxygen and get rid of carbon dioxide?
By diffusion through the body wall.
Through a system of tubes called tracheae.
Book Lungs
Gills
32
Squid and octopus can move rapidly by:
holding on to a rapidly swimming fish.
jet propulsion of water through their siphons.
crawling across the sea floor.
walking on their tentacles.
33
Bacteria that use dead organisms as sources of food are called:
Predators
Autotrophs
Parasites
Saprophytes
34
Why must arthropods molt?
It allows the organism to grow larger.
It makes it easier to get food.
A new exoskeleton is more attractive to females.
It allows them to replace worn-out and broken appendages.
35
Why do lizards, turtles, and other reptiles spend a lot of time basking in the sun?
They're afraid of the dark.
They have green skin with chlorophyll to do photosynthesis.
They are raising their body temperature to allow more activity.
They tan their skin to make it harder for predators to see them.
36
The word protozoan means:
First animal
Primary cell
Last cell
First organism
37
Which of the following correctly describes sea star reproduction?
Hermaphroditic, external fertilization.
Separate sexes, external fertilization.
Hermaphroditic, internal fertilization.
Separate sexes, internal fertilization.
38
How does a hydra move to a new location?
It does both A and B. (red and blue)
It does somersaults.
It uses its tentacles to swim.
It excretes a bubble of air and floats away.
39
Which of the following statements about Kingdom Protista is true?
All protists are prokaryotic.
All protists are unicellular.
Protists are classified according to how they obtain food.
All protists are heterotrophic.
40
The crayfish swims by:
moving its walking legs in a rowing motion, like oars on a boat.
rapidly contracting abdominal muscles to propel the crayfish backward.
waving its claws in a back-and-forth motion.
using modified wings as propellers to push it through the water.
41
Which group of mammals reproduces by laying eggs like birds or reptiles?
Placental Mammals
Marsupials
Chordates
Monotremes
42
Which term best describes the feeding habits of snails?
Predators on other animals
Parasites
Filter Feeders
Grazers on plants and algae
43
Which of the following is not a characteristic of a typical mammal?
skin covered with hair
three-chambered heart
give birth to live young.
glands to produce milk for young
44
Snails scrape algae from hard surfaces using a toothed tongue-like structure called a:
Foot
Beak
Radula
Tongue
45
What language is used to name organisms in most modern classification systems?
Latin
German
Italian
English
46
Which of the following groups of animals are endothermic?
Birds & Mammals
Sharks
Amphibians & Reptiles
Bony Fish
47
A bracket fungus growing from the side of a living tree would be classified as a:
Predator
Photosynthetic Fungus
Saprophyte
Parasite
48
Which of the following terms correctly describes the symmetry of mollusks?
Radial
Asymmetrical
Quadrilateral
Bilateral
49
The crayfish uses its large pinchers or “chelipeds” to:
capture food and fight other crayfish.
walk along the ground.
swim in the water.
aid in mating.
50
Which of the following is not a characteristic of all organisms in the phylum Chordata (at some point in their develo.)?
postanal tail
stiff dorsal notochord
exoskeleton
dorsal nerve cord
51
Which of the following statements about animals is true?
Animals are unicellular.
Animals ingest food molecules made by other organisms.
Animal cells lack nuclei.
They make food molecules from carbon dioxide, water, and solar energy.
52
The tangled mass of tube-like cells that forms the body of the fungus is called:
Ascocarp
Mycelium
Hyphae
Mushroom
53
Ectothermic organisms
regulate their temperature by moving to warmer or cooler surroundings.
are always cooler than their environment
are always warmer than their environment.
burn food to maintain a constant body temperature.
54
What kind of organisms are found around deep-sea hydrothermal vents?
Chemosynthetic Archaebacteria
Saprophytic Eubacteria
E. coli and other gastrointestinal
Cyanobacteria
55
What term would best describe the relationship between termites and the protozoans that live in their gut?
The protozoans are parasites that make the termite sick.
The termites prey on protozoans, using them for food.
The two organisms have no effect on each other.
Symbiotic relationship, where each organism is beneficial to the other.
56
Clams and snails have an open circulatory system, which means that:
the blood bathes the internal organs, unconfined by vessels.
oxygenated and unoxygenated blood are kept separate.
blood is always confined to a system of vessels.
they can support a highly active, high-energy lifestyle.
57
What characteristics are shared by both Kingdom Archaebacteria and Kingdom Eubacteria?
Includes only eukaryotic cells
Includes prokaryotic cells
Includes all heterotrophic organisms
Maintain multicellular organization
58
The tissue layer that forms an animal’s outer skin is the:
mesoglea
ectoderm
mesoderm
endoderm
59
In Linnaeus’ classification system, which group would contain the largest number of species?
Genus
Phylum
Species
Kingdom
60
How does a hydra coordinate the activities of its tentacles?
Its cells communicate with chemical signals.
It learns how to use its tentacles from its parents.
It has a well-developed brain to process sensory information.
It has a nerve net - touch on one tentacle causes all of them to contract.
61
Which of the following characteristics does NOT apply to most animals?
multicellular
photosynthetic
heterotrophic
motile in some phase of their life cycle
62
Beetles show complete metamorphosis. Eggs hatch into a(n):
Grub-like larva
Adult Beetle.
Pupa
Nymph
63
The genetic code of a bacterium is carried in:
The nucleus.
A double helix of DNA.
A molecule of RNA.
One large loop of DNA.
64
Characteristics of the Chondrichthyes include all of the following except
skeleton of cartilages
skin with placoid scales
highly efficient 4-chambered heart.
movable jaws
65
Sea stars move by:
expelling jets of water from their madreporite.
changing the pressure of water to extend of retract tube feet.
using muscles, tendons, and jointed limbs to move their feet.
none of the above – they are sessile and do not move.
66
Which term describes:
Phylum
Kingdom
Class
Species
67
The amoeba feeds and moves by using it’s:
Nucleus
Flagella
Cilia
Pseudopodia
68
According to the Endosymbiotic Hypothesis, eukaryotic cells evolved:
Before prokaryotic cells.
Separately from prokaryotic cells.
On another planet.
When small prokaryotic cells began living inside other cells.
69
Sea stars are:
predators that capture and digest mollusks
photosynthetic
sessile filter feeders
parasites that attach themselves to large fish
70
What is the function of the Malpighian Tubules in insects?
It filters waste from the blood.
It is a reproductive structure.
It digests food.
It acts as a sensory organ.
71
Compared to protozoans, animal cells show specialization, meaning:
Animals only eat one kind of food, while protozoans eat anything.
Animals have cells adapted for carrying out very specific functions.
Animals will only live in certain habitats, while protozoans live anywhere.
Animals have cells with cell walls.
72
Compared to other mollusks, squid and octopus have:
highly developed nervous and sensory systems.
a less active lifestyle.
poorly developed nervous and sensory systems.
no natural predators.
73
The function of the nematocysts on a hydra's tentacles is to
carry out photosynthesis.
attract hydras of the opposite sex.
sense temperature changes.
sting prey to make it easier to capture and eat.
74
The animal kingdom is made up only of:
Families
Unicellular Organisms
Multicellular Organisms
Autotrophs
75
Individual, tube-like fungal cells are called:
Rhizomes
Hyphae
Protoplasts
Mycelium
76
What conditions do halophiles like?
Very Hot
Acidic
Very Cold
Saline
77
The class Agnatha includes
jawless fish like lampreys and hagfish.
bony fish, like goldfish and perch.
skates, sharks, and rays
frogs, toads, and salamanders
78
Fungal cells:
have no cell walls.
have cell walls made from DNA.
have cell walls made from cellulose.
have cell walls made from chitin.
79
Which group of bacteria was the first to add oxygen to the Earth’s atmosphere?
Archaebacteria
Saprophytes
Cyanobacteria
Methanogens
80
How would you describe the level of organization in this organism?
Colonial
Single Celled
Unicellular
Multicellular

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