× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
s
5
g
5
K
5
o
5
g
5
o
4
k
4
s
4
I
4
k
4
j
4
o
4
Home Q & A Board Biology-Related Homework Help General Biology
New Topic  
vr vr
wrote...
Go to Answer
Posts: 510
Rep: 0 0
6 years ago
Four of the five answers listed below are components of the human respiratory system. Select the exception.
 
  a. thoracic cavity
  b. trachea
  c. diaphragm
  d. spiracle
  e. larynx

Question 2

Which have a collagen cuticle, a pseudocoelom, a tubular digestive system and no respiratory or circulatory organs?
 
  a. roundworms
  b. cnidarians
  c. flatworms
  d. annelids
  e. porifera
Read 33 times
2 Replies
Replies
Answer verified by a subject expert
katkatkatkatkatkat
wrote...
#1
Posts: 366
Rep: 0 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

vr Author
wrote...
#2
6 years ago
Thank you for helping me throughout this difficult semester
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  988 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 345
  
 879
  
 310
Your Opinion
How often do you eat-out per week?
Votes: 80
Previous poll results: What's your favorite funny biology word?