Moodle - BIO 106 Lab- Week 11

Cephalopoda, Bivalvia

Identify these two classes

a soft body with four distinctive regions: head, foot, visceral mass, and mantle.

The phylum characteristics of this organism are...

may inject ink when injected, has a cuttlebone

What are characteristics of this organism's class?

trochophore larvae

What is a presumed homology that connects the mollusks to the annelids?

not found in bivalves, a raspy tongue

What is a rudula?

the oldest, raised part of a bivalve shell

What is an umbo?

Stomach, foot

What is the Greek/Latin derivation of the name gastropod?

Mean

an average calculated by summing all the values and dividing by the sample size

head, foot

Squid and octopuses are in the Cephalopoda. What is the derivation of the name "Cephalopoda"?

Confidence Interval

approximately the mean ± 2*standard error

Sample Size

the number of variates for a variable within a group

Standard Error

the standard deviation of items divided by the square root of the sample size