The coelem is ________   Question 2 options:   a)  an internal body cavity that every type of animals has.   b)  a fluid filled internal body cavity that provides support and cushioning to many type of organs.   c)  a fluid filled internal body cavity that contains the spinal cord.   d)  one of the 5 characteristics that are only found in chordates.  Its not found in other animals.

Please answer 3 and 4 for "Pacific Cownose Ray".

Give only typing answer with explanation and conclusion

Which statements are false? Select all that apply?   Question 55 options:   Most chordates are vertebrates   The first vertebrates were jawless   The notochord and the vertebral column are the same things   Some chordates lack vertebrae   All living vertebrates have jaws

Are humans classified into this group, too? ______

choose 2 fron the choices

For phylum Mollusca, Class Cephalopod  1. Characteristics. List whether the organism is:a. Diploblastic or triploblastic (if applicable) b. Deuterostome or protostome (if applicable) c. Coelomate, pseudocoelomate or eucoelomate (if applicable)    2. Organ/system characteristics. Answer the following for each organism:a. How is their circulatory system? b. Excretory/osmoregulation: How does the organism eliminate waste? What organs do they use?   3. Ecology. Describe/answer the following for each organism:a. Does it have a complete or incomplete digestive system? How does this animal feed?b. Identify any unique feeding structure• Be sure to use the correct terms to identify any unique feeding structure(s) used by the animal.

Examine the skulls at this station.a. Did this skull belong to a platyrrhine or to a catarrhine? What information did you use to arrive at the answer? b. Did this skull belong to a prosimian or to an anthropoid? What information did you use to arrive at the answer?

What is the answer of the question number 1 and number 2? Show your work for each one of the questions

QUESTION 5: What are the general characteristics of amphibians?