QUESTION 1 Chordates are responsible for 98% of the animal diversity on the plan

ID: 53013 • Letter: Q

Question

QUESTION 1

Chordates are responsible for 98% of the animal diversity on the planet

True

False

10 points

QUESTION 2

Members of the phylum chordata have all of the following characteristics except

notochord

nerve cord

vertebral column

pharyngeal slits

10 points

QUESTION 3

Marsupial mammals differ from placental mammals because

the young in the pouch do not drink their mother's milk

they lack fur

the young are altricial

they are only found on island continents such as Australia

10 points

QUESTION 4

You are looking at a tunicate, subphylum urochordata. It lacks a notochord and a nerve cord. Why is it classified with the rest of the chordates?

a notochord and nerve cord are not necessary requirements to be in the phylum chordata

The notochord and nerve cord are present in the larval form

urochordates are actually not in the phylum chordata

tunicates were categorized here historically and have never been removed

notochord

nerve cord

vertebral column

pharyngeal slits

1. False. The most diverse of all animals are arthropods and not chordates.

2. Vertebral column

3. The young are altricial. They cannot move.

4. The notochord and nerve cord are present in the larval form

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