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cicatrix46 cicatrix46
wrote...
Posts: 8
9 years ago
Putting this here because I couldn't find the answer on here anywhere! (along with paying for one lol) Good luck!


Part A - Derived characters of chordates
All chordates share a set of derived characters during at least some part of their life.

Drag the labels to their correct locations on the diagram of chordate characters below. Use blue labels for blue targets and pink labels for pink targets.

A. Notochord
B. Paryngeal Clefts
C. Pharyngeal slits
D. Dorsal, hollow nerve cord
E. muscular, post-anal tail
F. may be associated with a jointed skeleton
G. may develop into parts of the ear
H. may develop into gill slits
I. may develop into the brain and spinal chord
J. may be used to propel some species in water

Part B - Phylogeny of chordates
The phylogenetic tree shown here displays the major clades of chordates.

Which statements about the phylogenetic tree are true?
Select all that apply.

- Birds and ray-finned fishes have a notochord and jaws.
- Organism (a) is a common ancestor of all chordates
- Rays and frogs have a vertebral column
- Descendants of organism (d) have legs
- Mammals and turtles are more closely related than are lungfishes and sharks

Part C - Lancelets and tunicates
Lancelets and tunicates are two groups of chordates. Classify each statement as applying to lancelets, tunicates, both lancelets and tunicates, or neither.

Drag each item to the appropriate bin.

Lancelets:
All chordate characters present in adults
Adults bury themselves into the sediment of the seafloor
Adults swim by the contraction of a series of muscles along the notochord

Tunicates
Most chordate characters not present in adults
Larvae swim using the notochord, but adults may be sessile
In adults, water enters through one siphon and leaves through another

Both
Adults feed with the aid of pharyngeal slits

Neither
Adults swim using the vertebral column

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8 Replies
Replies
wrote...
9 years ago
Thank you!!
cicatrix46 Author
wrote...
9 years ago
Thank you!!

No prob, bob Wink Face
tunguyet,  Ccadet12,  daltonpils,  jajaja123
Answer accepted by topic starter
ruwang1996ruwang1996
wrote...
Posts: 1
Rep: 3 0
9 years ago
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benlin,  anikaz,  ABC_1998

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wrote...
9 years ago
thanks! appreciate it. Slight Smile
wrote...
9 years ago
thanks
wrote...
9 years ago
You are awesome. Thank you so much!
wrote...
9 years ago
you are truly awesome!!! thank you so much!!!

sincerely, everyone who has to do mastering chem!!
wrote...
9 years ago
wow perfect answer
mpgamberoni,  mwl2255,  jajaja123
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