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
Mrrafil [7]
3 years ago
8

The anterior portion of the body of most annelids, such as the earthworm, is adapted for sensing the environment.

Biology
1 answer:
Diano4ka-milaya [45]3 years ago
6 0

Answer:

The answer is False. Although sensitive cells are <u>more abundant</u> in the <u>anterior portion</u> of the annelid´s body, in general, they are arranged in all the segments.

Explanation:

Annelids, such as the earthworm, have a variety of sensory cells:    

  • <u>Mechanoreceptors</u>, disposed of in groups in <em><u>each segment</u></em> of their body.  
  • <u>Photoreceptors</u>: Light-sensitive cells. Although they are <em><u>located in the whole </u></em>body, they are <em><u>abundant in anterior and posterior segments</u></em>, concentrated in the intern and dorsal part of the epidermis.
  • <u>Humidity receptors</u> are the most sensitive cells and are <u>located in the first segments</u> of the earthworm body
  • <u>Chemoreceptors</u>: sensorial cells cumulus forming a prominent tubercle with prolongations that extends through the cuticle. These tubercles form three rings <em><u>in each segment</u></em> but are especially <em><u>abundant in the anterior part</u></em> of the body.

The tegument is very rich in free nervous terminations, which functions might be tactile.

You might be interested in
"46. The largest number of neurons within the brain and spinal cord are _____; they are responsible for the central nervous syst
Whitepunk [10]

Answer:

INTERNEUTRONS

Explanation:

INTERNEUTRONS

Interneutrons are really the highest number of neurons and spinal cord. They are accountable for the diverse communication system of the nervous system and try and resolve between inputs and outputs.

Interneurons are groups of nerve cells commonly found in nervous system integrative areas where axons & dendrites are restricted to a specific area of  brain.

3 0
3 years ago
The most primitive true animal belongs to the phylum ____.
VMariaS [17]

Answer:

Porifera or Sponges

Explanation:

Porifera is the phylum of the simplest multicellular marine animals. Their body is composed of  two cell layers (something like tissues) and mesophyl between them. The body is in direct contact with surrounding water through the large number of pores and channels. What makes Sponges so simple is that their cells are unspecialized and that they  don't have nervous, digestive or circulatory systems.

6 0
3 years ago
(fill in the blank) prairies and savanna's are two type of ____ ​
uranmaximum [27]

they are both two types of grasslands

7 0
3 years ago
The cells that make up muscle are specialized to do their job by having many ?
Len [333]
<span>it is Cardiac muscle tissue. Cardiac muscle tissue is an extremely specialized form of muscle tissue that has evolved to pump blood throughout the body. In fact, cardiac muscle is only found in the heart and makes up the bulk of the heart’s mass. The heart beats powerfully and continuously throughout an entire lifetime without any rest, so cardiac muscle has evolved to have incredibly high contractile strength and endurance. And because the heart maintains its own rhythm, cardiac muscle has developed the ability to quickly spread electrochemical signals so that all of the cells in the heart can contract together as a team....</span>
7 0
3 years ago
discuss the indications for the placement of provisional coverage for a crown or a fixed bridge preparation?
Savatey [412]

Answer:

Explanation:

Based on the information provided within the question it can be said that there are various reasons for the placement of this, most of the reasons include,

  • To prevent or reduce sensitivity and discomfort of the prepared tooth & surrounding structures  
  • To protect the margins of the preparation
  • To maintain the function & esthetics of the tooth
  • To prevent shifting of adjacent or opposing teeth
6 0
3 years ago
Other questions:
  • A purebred chicken with white feathers is crossed with a purebred chicken that has black feathers. each of their offspring has b
    14·1 answer
  • Beth learned in her science class that white blood cells in the human body capture harmful material by engulfing them. Then they
    5·2 answers
  • Producers make up more biomass than primary consumers because _____.
    6·1 answer
  • How do electrons gain energy in photosystem 1?
    6·2 answers
  • The first line drug choice for a previously health adult patient diagnosed with community acquired pneumonia would be
    6·1 answer
  • Some people consider Staphylococcus aureus to be a primary pathogen, while others classify it as an opportunist. Which of the fo
    11·1 answer
  • Adaptations in a population may lead to the evolution of new species. Which word is associated with the process of evolution?
    13·1 answer
  • La célula una de sus características es alimentarse para obtener la energía necesaria para realizar las diferentes funciones en
    8·1 answer
  • Regarding the planes of axes, a joint that is capable of moving through all three anatomical planes is called
    11·1 answer
  • Aldosterone stimulates the protein synthesis of ______ and ______. multiple choice question.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!