WorksheetsFinal review 20-21pt. 1
Total questions: 25
Worksheet time: 13mins
Primary producers are
the organisms that create energy-rich compounds.
the organisms that must get all their energy from other organisms.
none of the above
Biomass means _____ . Standing crop is the _____ in an ecosystem.
mass of living tissue, mass of primary consumers at a given time
mass of primary consumers, mass of living tissue
mass of living tissue at a given time, mass of living tissue
mass of living tissue, mass of living tissue at a given time
“Plankton” describes
a particular species of organisms.
a wide variety of organisms that share a habitat and lifestyle.
all the small organisms in the ocean
Most primary production in the sea is from
algae
phytoplankton
zooplankton
Limiting factors are
physiological or biological necessities that affect survival.
the genetics that restrict an organism’s maximum size.
none of the above
For the most part, the less light, the _____ primary productivity.
more
less
the same
A trophic pyramid is
a representation of how energy transfers from one level of organisms to another.
a physical structure that directs food energy for cellular respiration.
a physical structure in Egypt
A primary consumer is
an organism that photosynthesizes.
an organism that consumes secondary consumers.
an organism that consumes primary producers.
A secondary consumer is
an organism that consumes secondary producers
an organism that photosynthesizes.
an organism that consumes primary consumers.
About _____ of available energy transfers from each level of the trophic pyramid to the next.
50%
30%
10%
5%
A food web better represents the flow of energy in nature than a trophic pyramid because
scientists don’t really know what organisms consume.
organisms often eat across the theoretical levels of the trophic pyramid.
food gets caught in the web and is consumed
An organism’s scientific name represents
kingdom and order.
genus and species.
genus and class.
family and genus.
Some bacteria can _____, which no other organisms can do.
photosynthesize
fix inorganic nitrogen into organic nitrogen compounds
fix inorganic carbon into organic carbon compounds
live near the edge of volcanoes
The largest of the brown algae is _____. It is important because _____.
Irish moss, it is eaten in Japan
Sargassum, it is the foundation of tropical ecosystems
the pneumatocyst, it grows 30 meters (98 feet) per day
kelp, it is the foundation of temperate coastal ecosystems
Red algae are important to coral reefs because
they help to cement the reef together.
they are the coral polyp’s primary food.
they prevent sharks from feeding on coral.
they add desirable colors to underwater photographs.
A(n) _____ plant lives partially in and out of the water. A(n) _____ plant lives entirely underwater.
submergent, mangrove
mangrove, emergent
submergent, emergent
emergent, submergent
The two major cell types in a sponge’s tissues are
collar cells and epithelium.
collar cells and amoebocytes.
amoebocytes and oscula.
epithelium and oscula.
The largest class in phylum Cnidaria is class _____, which includes _____.
Anthozoa, jellyfish
Hydrozoa, siphonophores
Anthozoa, corals and anemones
Scyphozoa, jellyfish
_____ may possibly be the longest animal in the world.
the blue whale.
a siphonophore.
Lineus longissimus.
none of the above
The greatest challenge for a plant to adapt to living in the sea is
water motion.
predators.
water salinity.
nutrients.
Members of phylum Mollusca generally share _____, _____, and _____.
mantle, jet propulsion, tentacles
mantle, foot, radula
foot, tentacles, radula
shells, radula, mantle
Mollusks in class Bivalvia
have two shells.
lack a “head.”
do not have a radula.
all of the above
Mollusks in class Cephalopoda include
slugs and snails.
oysters and scallops.
nudibranchs.
none of the above
The _____ is thought to be the most intelligent invertebrate.
cuttlefish
squid
octopus
whelk
Organisms classified as members of phylum Chordata are characterized by having a _____ and a _____ at some point in their life cycle.
notochord, vertebra
dorsal nerve cord, vertebra
notochord, dorsal nerve cord
dorsal nerve cord, sinuses
