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
olganol [36]
3 years ago
13

What fossil evidence helped taxonomists separate all "fish" into these two branches for classification?

Biology
2 answers:
wariber [46]3 years ago
4 0

The correct answer is option A, that is, jaw or jawless fishes.

Agnatha refers to the superclass of jawless fish in the phylum Chordata, subphylum Vertebrata, comprising of both the extinct (conodonts and ostracoderms) and present (cyclostomes) species. It comprises the group of all vertebrates with jaws, that is, gnathostomes.

On the other hand, there are two categories of living fish with jaws. The Osteichthyes (the bony fish) and the Chondrichthyes (the cartilaginous fish). Both the categories of fish comprises of two pairs of lateral fins and a finned tail for impulsion in water.


Snezhnost [94]3 years ago
4 0
Invertebrates and vertebrates
You might be interested in
What is the job of the protons (H+) in the ETC?
JulsSmile [24]

Answer:

The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP. Hope this helps!

Explanation:

Possible brainliest?

3 0
2 years ago
Nutrients enter a cell ______ the concentration gradient by the process of _______.
ziro4ka [17]
Nutrients enter a cell up the concentration gradient by the process of active transport.
5 0
3 years ago
Read 2 more answers
Where does the first stage of cellular respiration occur?
Anestetic [448]

The first stage of cellular respiration is glycolysis. It takes place in the cytosol of the cytoplasm. <span>The word</span><span> </span><span>glycolysis</span><span> </span><span>means “glucose splitting,” which is exactly what happens in this stage. Enzymes split a molecule of glucose into two molecules of pyruvate (also known as pyruvic acid). This occurs in several steps, as shown in</span><span> </span><span>Figure</span><span> </span><span>below</span><span>.</span><span> </span>

8 0
3 years ago
During periods of high solar activity, huge cloudlike structures that appear as great arches extending from the sun are often pr
aleksandr82 [10.1K]
Solar features are called prominences 
6 0
2 years ago
The carrying capacity for a species in an ecosystem is primarily determined by _____.
aivan3 [116]
The food sources available for a particular species in an ecosystem. Also space where they can live and reproduce, but food is the main factor.
8 0
3 years ago
Other questions:
  • Which of the listed relationships between groups is correct?
    12·1 answer
  • What are dolphins made/ what support structures do they have?
    14·1 answer
  • A waxy secretion produced by glands in the ear canal is:
    15·1 answer
  • Thuy wants to advocate for clean air laws. Which field of study would be most useful to her?
    5·1 answer
  • Question 1 of 10
    6·1 answer
  • What kind of energy does matter have when it is in motion?
    11·2 answers
  • What carries messages away from the cell body
    5·1 answer
  • Which of the following is NOT a mechanism used to temporally regulate the activity of maturation-promoting factor (MPF)?
    7·1 answer
  • Fossils provide evidence for all of the following EXCEPT for
    13·2 answers
  • 1d) Another student carries out an investigation to estimate the total
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!