1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marusya05 [52]
2 years ago
13

What is an echinoderm with long spines?

Biology
1 answer:
alukav5142 [94]2 years ago
7 0

The echinoderm with long spines belongs to the class Echinoidea which includes sea urchins, heart urchins, cake urchins and sand dollars. This spine serves as their protective mechanism from predators. The spines are joined to the skeleton and muscles surround it. The muscles enable them to swivel its spines from predators.

You might be interested in
In the carbon cycle, carbon is taken in by plants A) as ammonia in the process of assimilation B) as carbon dioxide in the proce
lora16 [44]
<h2>As carbon dioxide in the process of photosynthesis</h2>
5 0
2 years ago
Which organism has a nerve net that allows it to respond to a stimulus in a coordinated way​
posledela

Answer:

HYDRA

Explanation:

The nerve cells are scattered in each layer of the body wall and these neurons send information from sensory organs. Based on the given choices above, the organism that has a nerve net that allows it to respond to a stimulus in a coordinated way is the HYDRA.

8 0
3 years ago
Read 2 more answers
How are amino acids held together?
Thepotemich [5.8K]

the answer is

C) peptide bonds

4 0
3 years ago
Read 2 more answers
Question One
Digiron [165]

Answer:

what I don't understand what your questoin

7 0
3 years ago
Read 2 more answers
Help help help help please
inessss [21]

Answer:

its day 14 and 15 . relative formation concernatural c

Explanation:

how do I know?

I just know

u know !!

8 0
3 years ago
Other questions:
  • Why are saprotrophs so important to a marine food web?
    9·2 answers
  • Write some similarities and differences between the inner planets and the outer planets
    6·2 answers
  • Which of the following amino acids cannot be directly converted to pyruvate?
    7·1 answer
  • Some cyanobacteria are capable of nitrogen fixation, a process that
    13·1 answer
  • Which class of organic compounds do cells use to store information? nucleic acids proteins lipids carbohydrates
    10·2 answers
  • After buying a new house by the lake, the Harrison's decided to cut down the trees and bushes that were blocking
    13·1 answer
  • What is the source of the pressure that has caused coyotes to adjust to a more nocturnal behavior
    13·1 answer
  • How to minimize flood​
    11·2 answers
  • The algae at the beginning of the food chain is a_______.
    6·2 answers
  • URGENT!! list 16 things in your house or yard that contain oxygen
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!