Question

Which of the following are characteristics of vertebrates?
Question 8 options:


blood that circulates through vessels


a nervous system connected to a brain


muscles that allow the organism to move


all of the above
Question 9 (1 point)


Sea urchins are spiny, globular animals that live on the ocean floor. How are sea urchins classified?
Question 9 options:


vertebrates


invertebrates


mammals


arthropods

Answer 1

${\huge {\mathfrak {Answer :-}}}$

✨8

➡️ All of the above.

✨9

➡️ Invertebrates.

Actually, the Sea Urchins belong to the Phylum Echinodermata.

That's it..

Answer 2

1) All the given options are characteristics of vertebrates.

The following are considered as characteristics features of the vertebrates,

• They have circulatory system in which blood is circulated through vessels.
• They have a nervous system connected to a brain to elucidate responses to the stimulus.
• They have muscles that allow the organism to move .

The answer is ALL OF THE ABOVE

2) Sea urchins are spiny, globular animals that live on the ocean floor. They are classified as invertebrates.

• It is because invertebrates lack the backbone, which is present in the vertebrates.