Here is alot of questions, I'm not lazy I'm just really tired I will be doing these tomorrow, but any help would be appreciated!

Question 3 (1 point)
The structure in the cephalopods that is highly specialized and resembles that of the vertebrates is
a)the mouth
b)the eye
c)the ear
d)the body covering

Question 7 (1 point)

The most highly developed mollusks are

a)snails and slugs
b)chitons
c)squids and octopuses
d)clams and scallops

Question 8 (1 point)

In the razor clam, which is buried by 10 cm of sand, the protuding portion that can be seen from the sand surface is called the
a)mantle
b)funnel
c)radula
d)siphon

In mollusks, the coelom is reduced and limited to a region around the

a)foot
b)heart
c)gills
d)stomach

Question 13 (1 point)

Which of the following do not have tube feet?

a)sea urchin
b)sea cucumber
c)sea star
d)sea slug


Question 25 (1 point)
Which of the following is not a characteristic of an echinoderm?
a)calcareous exoskelton
b)radial symmetry
c)regeneration
d) Water-Vascular System
water-vascular system

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Go to "Raising Clams" on page 707 in your textbook and use the graph to answer the next 5 questions.
Question 26 (1 point)
Approximately how many years does it take clams to reach a size at which they can be removed from hatcheries and put in creeks?

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Question 27 (2 points)
How does climate affect the growth of most clams?

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Question 28 (2 points)
How much did the clams grow during the first 5 years? The next 5?

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Question 29 (2 points)
Formulate a hypothesis to explain the slower growth rate from years 5 to 10.


If you can't answer the ones asking about the Diagram It'll be easier tomorrow when I'm awake, but if you help out in any way thanks!