Hemichordates & Invertebrate Chordates

Like tunicates, lancelets feed in which way?  

• Herbivory
• Deposit feeding
• Filter feeding
• Hunting

What is the organism shown?

• Light Bulb Tunicates

• Lancelet

• Acorn Worm

• Anemone

Which of the following is not a defining trait of chordates?

• a notochord
• gill slits open across the wall of the pharynx
• muscular tail that extends beyond the anus
• a closed circulatory system

All chordates are vertebrates.

• True
• False

Fish-like marine animals usually found half buried in sand

• Respiration
• Lancelets
• Excretion
• Tunicates

Tags

NGSS.MS-LS2-3

Members of this phylum includes acorn worms and pterobranchs.      

• Hemichordata
• Echinodermata
• Urochordata
• Cephlachordata

Which support structure shared by both invertebrate and vertebrate chordates is depicted by “B” in this image of lancelet anatomy shown in figure 1 ?  

• Gonad
• Nerve cord
• Notochord
• Vertebrate

The cavity surrounding the pharynx of a tunicate is called the   

• nephrocoel.
• coelom.
• atrium.
• hemocoel. 

Members of the subphylum Cephalochordata are called 

• lancelets
• tunicates
• salps
• acorn worms

Which of the following is NOT a characteristic of all members of Phylum Chordata?

• dorsal hollow nerve cord
• vertebrae made of cartilage or bone
• pharyngeal pouches/slits
• post-anal tail