Name: _____________________________________ Number: __________________
GPB Video: The World of Protozoa; 30:40; 6-8
Part 1:
Modified True and False.
1. ____________________ Invertebrate means “without backbones”.
2. ____________________ The immature stage of an organism’s life is called the larval
stage.
3. ____________________ The most numerous and common creatures in a drop of
pond water are bacteria.
4. ____________________ Bacteria decompose dead material and are a food source for
protozoa.
5. ____________________ The two groups of protists are animal-like “-zoa; as in
zoo!”, and plant-like algae (-phyte).
6. ____________________ Algae are producers; and the energy they capture from the
sun is passed on to consumers.
7. ____________________ Photosynthesis produces food (sugar; glucose) and carbon
dioxide.
8. ____________________ Mitochondria are organelles where photosynthesis occurs.
9. ____________________ Euglena is both plant-like and animal-like.
10. ___________________ Predation means “two types of organisms living together”.
11. ___________________ Ribosomes can only tell light form dark.
12. ___________________ Flagella are hair-like structures.
13. ___________________ Contractile vacuoles control water content in paramecium,
as do ovaries in humans.
14. ___________________ Pseudopods are “false feet”. Amoebas and human white
cells use these to move and feed.
15. ___________________ Flagella are used by protozoa and human sperm cells for
locomotion (movement).
16. ___________________ The two types of reproduction are asexual and sexual.
Part II:
1. (Use your textbook); List the three types of symbiosis; describe each; and give an
example of each!
2. Using the following terms, construct a simple food chain: sun, simple
invertebrates, algae, tadpoles, heron, protozoa, fish.
3. For the food chain you constructed in #2, answer the following questions.
a. What is the ultimate energy source for your food chain? __________________
b. What process do alga use to make this energy useful for it and other organisms?
_____________________________
c. List the producer(s) in your food chain. _________________________________
d. List the consumers in your food chain. _________________________________
e. If I added bacteria to your food chain, in which two places could they be placed,
and what would be their role?
_____________________________________________________________
f. In which kingdom are simple invertebrates, tadpoles, fish, and heron placed? Give
the characteristics of this kingdom.
g. What process do tadpoles undergo as they become frogs? P.835
h. Turn to p, 778; give the names of two other organisms that undergo this process.
i. Turn to p. 881; Define Endothermy.
Organisms that are of this type are also called warm-blooded. Look at your food
chain, which type of organism or organisms are warm-blooded. What do they use
to hold the heat they generate in? ____________________________. We are
warm-blooded. How do we hold our heat in (no, clothes is not the answer; they
are used for cultural reasons, modesty reasons, and as assistance in temperature
regulation)?
j. List the cold-blooded creatures in your food chain.
__________________________________________________________________
k. List the prokaryotes in your food chain.
l. List the eukaryotes in your food chain.
m. List the autotrophs in your food chain.
n. List the heterotrophs in your food chain.
o. List the decomposers in your food chain.
p. List the two eukaryotic kingdoms not given in your food chain.
q. Define the following:
habitat:
niche:
r. Use your glossary found at the back of your textbook. Look up the words
population and community. Does your food chain of pond life constitute a
community or a population? Why?
s. An ecosystem consists of a community and all the physical aspects (soil, water,
temperature, precipitation-snow, rain, pH, light, etc.) of the communities home. What two
factors constitute an ecosystem.
t. What are the two most important elements of climate?
u. What is a biome? List the eleven major biomes found on earth.