SC160 Lesson 7 Exam SCORE 95 PERCENT
Exam 7 SC160
Question 1 (5 points)
What characteristic is unique to echinoderms?
Question 1 options:
A lack of segmentation
A water vascular system
Suction-cup-like feet
Larvae with bilateral symmetry
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Question 2 (5 points)
Rays are a type of:
Question 2 options:
tunicate.
cartilaginous fish.
jawless fish.
bony fish.
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Question 3 (5 points)
Nearly all __________ are aquatic.
Question 3 options:
crustaceans
arachnids
flatworms
roundworms
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Question 4 (5 points)
Unique features of vertebrates include the presence of a(n):
Question 4 options:
endoskeleton.
notochord.
skull and backbone.
pharyngeal slit.
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Question 5 (5 points)
Why are bryophytes considered incompletely liberated from their ancestral aquatic habitat?
Question 5 options:
Their embryos do not develop within gametangia.
Their sperm are flagellated.
The gametophyte generation is dominant.
They lack a cuticle.
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Question 6 (5 points)
The first hominid to spread beyond
Africa
was:
Question 6 options:
"Lucy".
Australopithecus afarensis.
Homo erectus.
Homo neanderthalensis.
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Question 7 (5 points)
How do New World monkeys differ from Old World monkeys?
Question 7 options:
New World monkeys have a prehensile tail.
New World monkeys have enhanced depth perception.
Old World monkeys are arboreal.
New World monkeys have nails; Old World monkeys have claws.
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Question 8 (5 points)
What important role do fungi play in many ecosystems?
Question 8 options:
They decompose organic material.
They pollinate plants.
They disperse the fruits of angiosperms.
They perform photosynthesis
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Question 9 (5 points)
The function of a mushroom is to:
Question 9 options:
produce seeds.
store nutrients.
absorb food.
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Question 10 (5 points)
The mobile stage of the cnidarian life cycle is the __________ stage.
Question 10 options:
instar
polyp
tadpole
medusa
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Question 11 (5 points)
__________, a chemical that hardens cell walls and supports terrestrial plants, is found in all plants EXCEPT __________.
Question 11 options:
Lignin; bryophytes
Cellulose; bryophytes
Calcium carbonate; ferns
Lignin; ferns and bryophytes
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Question 12 (5 points)
Like plants, fungi have __________; however, in plants they are composed of __________, whereas in fungi they are composed of __________.
Question 12 options:
cell walls; cellulose; chitin
cell walls; cellulose; peptidoglycan
cell membranes; phospholipids; peptidoglycan
cell walls; phospholipids; cellulose
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Question 13 (5 points)
Which of these human characteristics evolved first?
Question 13 options:
Enlarged brain
Erect posture
Language
Loss of body hair
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Question 14 (5 points)
What is this organism?
Question 14 options:
Fern
Fungus
Bryophyte
Gymnosperm
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Question 15 (5 points)
Which of these adaptations to a terrestrial existence evolved most recently?
Question 15 options:
Vascular tissue
Seeds
Gametangia
Cuticle
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Question 16 (5 points)
Why are ferns considered incompletely adapted to the terrestrial environment, when compared with other plants?
Question 16 options:
They lack vascular tissue.
Their sperm are flagellated.
The gametophyte generation is dominant.
They lack gametangia.
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Question 17 (5 points)
A true coelom is:
Question 17 options:
completely lined with tissue derived from endoderm.
completely lined with tissue derived from mesoderm.
formed when a zygote develops into a blastula.
completely lined with tissue derived from ectoderm.
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Question 18 (5 points)
What are hyphae?
Question 18 options:
Symbiotic associations between plant roots and fungi
Threadlike filaments that make up fungal bodies
Fungal reproductive structures
Fungal spores
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Question 19 (5 points)
Where did humans first appear?
Question 19 options:
South America
Africa
Asia
Europe
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Question 20 (5 points)
Annelids are most closely related to:
Question 20 options:
chordates.
arthropods. (Incorrect)
molluscs.
echinoderms.