Top Posters
Since Sunday
A
6
j
6
c
5
m
5
C
5
d
5
s
5
n
4
i
4
d
4
d
4
J
4
Home Q & A Board Biology-Related Homework Help Zoology and Botany (Moderator: ehd123)
New Topic  
Dugg Dugg
wrote...
Go to Answer
Posts: 559
Rep: 4 0
6 years ago
Why do adult urochordates (tunicates) lack notochords, even though larval urochordates have them?
A) Larvae use notochords to aid in swimming; adults are sessile and, thus, no longer need notochords.
B) Larvae use notochords to stiffen their bodies; in adults, the notochord is replaced by a column of bone.
C) Larvae use notochords to induce tissue differentiation; in adults, tissue is already differentiated.
D) Larvae use notochords to organize their nervous systems; adults' nervous systems are fully developed and do not change.
Textbook 
Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
Authors:
Read 63 times
1 Reply
Replies
Answer verified by a subject expert
mastemamastema
wrote...
#1
Top Poster
Posts: 705
Rep: 22 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

Dugg Author
wrote...

6 years ago
This helped my grade so much Perfect
big_larry_samp
wrote...

Yesterday
Thanks
rudy.zondo
wrote...

2 hours ago
Thank you, thank you, thank you!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  747 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 18362
  
 632
  
 1109
Your Opinion
Which is the best fuel for late night cramming?
Votes: 146
Previous poll results: Do you trust social media networks with protecting your privacy?