Scientific Method
What is the name of the variable we change in an experiment?
Name one threat that animals in the UPPER intertidal zone face.
Predation, desiccation
True or false: Algae are a type of angiosperm
False!
Which of these animals is NOT a mollusc?
a. Mussel
b. Horseshoe Crab
c. Squid
d. Sea Slug
b. Horseshoe Crabs are Arthropods!
Lobsters are most closely related to:
a. insects
b. clams
c. fish
d. whales
a. insects!
True or false: science is best performed alone
False! (peer review, most papers have more than one author, repeatability)
How do molluscs resist being swept away by the waves?
Holdfasts
Primary producer- it does photosynthesis and makes its own food.
What is a mollusc's siphon used for?
filter feeding
Name the three basic body parts of an arthropod
Head, thorax, abdomen
What is the difference between a control and a constant in an experiment?
True or False (and correct it if it's false): The lack of sunlight is the primary threat to animals living in the intertidal zone.
False! (answers will vary on threats)
Name a pigment present in algae and its function.
Chlorophyll, for photosynthesis
Carotenoids, for sun protection
Rhodophyll, makes red algae red
Squid
True or False: Echinoderms have radial symmetry
True!
What sorts of questions can the scientific method not answer?
Non-testable questions (philosophical ones)
Why is there more biodiversity in a rocky beach versus a sandy beach?
There are more hiding spots, less threat of predation, less risk of dessication
A mangrove tree is placed in the lower intertidal zone. Will it survive? Why/why not?
No, because mangrove trees can tolerate partial, but not full salinity.
Name a characteristic common to all molluscs.
mantle with a soft body
Compare and contrast suspension-feeding and deposit-feeding.
Suspension feeders capture and ingest organic matter suspended in water. They are mostly filter feeders. In contrast, deposit feeders ingest sediments and digest particles
You design a study to test whether changes in room temperature have an effect on math test scores. What is the independent and the dependent variable?
Your independent variable is the temperature of the room. You vary the room temperature by making it cooler for half the participants, and warmer for the other half.
Your dependent variable is math test scores. You measure the math skills of all participants using a standardized test and check whether they differ based on room temperature.
Please give the full taxonomy (kingdom, phylum and class) for NUDIBRANCHS.
Animalia, mollusca, gastropoda
Where do we get agar from?
Red algae
Where is the oldest part of a clam located?
The umbo
Which of the following animals has an exoskeleton?
Crab; Mussel; Clam; Sea Star
Crab