Week 7 Lab Worksheet: Biological Processes,
Classification of Invertebrates and Bottom
Communities
Part 1 of 1 -
99.90001 Points
Question 1 of 15
6.66 Points
The three families of algaes are:.
A.Green, Red, Grey
B.Green, yellow, brown
C.Green, red, brown
D.Mangroves, red, brown
Answer Key: C
Feedback: Green algaes are both microscopic (phytoplankton) and macroscopic like sea lettuce.
Red algaes are mostly macroscopic but there are a few species of red phytoplankton.
Brown algaes are all macroscopic and are the largest and grow in deeper water like the giant kelps which are the largest plants on Earth. Some kelps can be up to a mile long!.
Question 2 of 15
6.66 Points
Consider the arrows shown on the food web (Figs 10-13 & 10-16 in textbook, and/or pgs LM 61 & 62, pgs
158-159/Chap#42 :Food Webs in the Lab Manual). What does the number of arrows leading FROM one species to another suggest about that species' importance in the food web?
A.This species is an important food source for many other species.
B.That species preys on many other species.
C.That species has a limited role in the food web.
D.That species is endangered.
Answer Key: A
Feedback: The more connections an organism has the more important it is in the Food Web. Sort of like
Facebook.
Question 3 of 15
6.66 Points
In the food web, what may indicate that a species is vulnerable to becoming endangered or extinct?
Think about top-level consumers.
Refer to pgs LM 61 & 62, pgs 158-159/Chap#42 :Food Webs in the Lab Manual.
A.Many arrows pointing to it.
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Week 7 Lab Worksheet: Biological Processes, Classification of Invertebrates and Bottom ... Page 2 of 6
B.Many arrows pointing away from it.
C.Only one arrow pointing to it.
D.There is no relationship.
Answer Key: C
Feedback: Remember top-level