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
Alinara [238K]
3 years ago
15

You learned that members of this class were formerly divided into two groups: Errantia and Sedentaria.

Biology
1 answer:
Nataly [62]3 years ago
5 0
<h2>Polychaetes </h2>

Explanation:

  • Polychaetes is any of the diverse, mostly marine segmented worms of the annelid class Polychaeta, characterized by having most segments with one pair of lateral, fleshy, lobe like appendages called parapodia, with numerous bristles projecting from them
  • Polychaetes have true segments and anterior to the true segments lie the prostomium and peristomium
  • This head region of two segments typically contains two pairs of eyes, three antennae, several tentacles, a pair of palps, and the mouth
  • Polychaeta is divided into Errantia and Sedentaria for convenience
  • Errantia (scaleworms, sea mice):A subclass of polychaete worms which have a large number of body segments, those of the head and posterior differing from the rest,the mouth often has several paired jaws
  • Most are vagile predators, others adopt a burrowing mode of life and are first recorded from the Cambrian
  • Sedentaria (bamboo worms, coneworms):A subclass of entirely marine worms in which the body segments and parapodia differ along the length of an individual,all Sedentaria are burrowers or tube-dwellers and are first recorded from the Ordovician

You might be interested in
What practice should an obese individual on a diet carry out
erastova [34]

Some foods and eating patterns may make it easier to keep obesity in check.  Healthy food choices and diet patterns that help prevent heart disease, diabetes, and other chronic conditions may also help to prevent weight gain.  

Eat whole foods-whole grains, vegetables, fruits, nuts, healthful sources of protein (fish, poultry, beans), and plant oils. Processed food should be minimal. Limit sugared beverages, refined grains, potatoes, red and processed meats, and other highly processed foods, such as fast food.


6 0
3 years ago
Read 2 more answers
Options: smaller, rises, ocean, low, high, sun, larger, sinks.
Sladkaya [172]

Answer:

answers;

sinks

high

larger

sun

6 0
3 years ago
Which is a fixed cost? A. rent B. labor C. raw materials D. heating fuel
arlik [135]
The answer is A. rent . Also some other fixed cost is buildings and machinery. Hope this helps
5 0
3 years ago
Read 2 more answers
HELPPP PLEASEEEE
OLga [1]

D. Adaptations that improve the chances an individual will have a

long life but that may not affect reproduction become more

common within a population over time

6 0
3 years ago
A student has to perform an experiment on the effect of heat on a particular chemical which can be seen in the form of a color c
Mrrafil [7]
It would be in conclusions.
5 0
3 years ago
Other questions:
  • If an enzyme has a single optimal temperature, then an organism might have difficulty dealing with an environment with wide temp
    12·1 answer
  • Acid rain is formed when certain molecules, such as sulfur dioxide (SO2), react in the atmosphere to form acids. How does most S
    13·1 answer
  • _2. Second stage of the cell cycle when DNA is copied
    13·2 answers
  • How do prokaryote, eukaryote and viruses differ?
    7·1 answer
  • In a classic experiment using pea shape, Mendel conducted two separate genetic crosses. In the first cross the parent plants wer
    8·2 answers
  • As blood enters the ____________ , the walls of these vessels expand and contract, which can be felt as the pulse where the ____
    13·1 answer
  • The bacterial flagellum moves _______. Multiple Choice by rotation that is powered by ATP by rotation that is powered by the pro
    9·1 answer
  • Check your understanding. Which items did you
    10·1 answer
  • The frequency of a certain trait in a population will increase over many generations if which of the following is
    6·1 answer
  • What is photosynyhesis and cellular respiration?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!