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
storchak [24]
3 years ago
10

Some of the first animals to develop an endoskeleton were _____. mollusks arthropods annelids echinoderms

Biology
2 answers:
Andrews [41]3 years ago
5 0

Answer:

The correct answer would be echinoderms.

Endoskeleton refers to the skeletal system found inside the body of an organism.  

It is mainly found in organisms belonging to Chordata, Echinodermata, Coleoidea, and Porifera.

Echinoderms were among the first animals to develop endoskeleton.

They have a mesodermal skeleton which is primarily composed of calcareous ossicles or plates  

Both of the structures are composed of crystals of calcite which form a porous structure termed as stereom.

Lubov Fominskaja [6]3 years ago
4 0
<span>Some of the first animals to develop an endoskeleton were: echinoderms.</span>
You might be interested in
Difference between pleomorphic and dedifferentiated
emmainna [20.7K]
Pleomorphism (microbiology): the ability of some bacteria to alter their shape or size in response to environmental conditions. Dedifferentiated liposarcoma is the least common subtype of liposarcoma and usually arises from a well-differentiated liposarcoma (WDLPS). Progression occurs. in 17 % of patients when WDLPS is located in the retroperitoneum and 6% of cases when WDLPS is located in the extremities.
5 0
3 years ago
Why is myxoma no longer effective in controlling rabbit population?
Margaret [11]

The development of resistance to the disease has taken different courses. In Australia, the virus initially killed rabbits very quickly – about 4 days after infection. This gave little time for the infection to spread. However, a less virulent form of the virus then became prevalent there, which spread more effectively by being less lethal. In Europe, many rabbits are genetically resistant to the original virus that was spread. The survival rate of diseased rabbits has now increased to 35%, while in the 1950s it was near zero.[15]

Hares are not affected by Myxomatosis, but can act as vectors.<span>[16</span>

<span>please mark as brainliest</span>

6 0
4 years ago
How are muscle cells in bone cells similar
arlik [135]

Explanation:

Bones shape our body and help is to stand up straight. Muscles are attached to bones, they help us walk and run and smile. All the bones in our body make up our skeleton - from the top of our skill to the tips of our phalanges at the end of our toes. Muscles stretch across our bones and are attached with tendons.

7 0
3 years ago
What are some examples of a fruit and a seed getting confused ?
Luba_88 [7]

Answer:

a seed is small an still like a baby so when it grows up it produces

6 0
3 years ago
Why are there so many changes to the bay's plant and animal population
lawyer [7]
There are so many changes due to adaptation and climate change
5 0
4 years ago
Read 2 more answers
Other questions:
  • ______________ theories suggest that certain biological or psychological factors in individuals could incline them toward crimin
    8·2 answers
  • Can someone please help me
    11·1 answer
  • A scientist is designing an investigation to study the impact of UV radiation present in high-altitude habitats on the populatio
    13·2 answers
  • What is one of the contributions made to the development of the microscope by Galileo?
    11·2 answers
  • Why dose a necturus look the way it dose​
    14·1 answer
  • What is the meaning of biosphere​
    13·2 answers
  • Which of the following is not a primary concern when dealing with ethical issues related to modern day biotechnology? Group of a
    11·1 answer
  • Choose True or False.
    14·1 answer
  • What physical quantity does symbol I stand for?
    11·1 answer
  • what is the name of the process in bacteria that involves dna transfer through a cytoplasmic connection known as a pilus?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!