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
svetlana [45]
3 years ago
9

Based on figure 21-1 ,animals are most closely related to

Biology
2 answers:
Vikki [24]3 years ago
8 0
Choanozoa—It's the branch that animals are most directly connected to.
Luden [163]3 years ago
8 0

Answer: The correct answer is-

Choanozoa.

A phylogenetic tree is a representation of evolutionary relationship between different species. It is constructed on the basis of their similarities and differences in their morphological ( physical traits) as well as genetic characteristics.

Two species are said to be most closely related if they share most recent common ancestor. In other words, when two species are descended from a most recent common ancestor, they are said to be most closely related with each other.

In this question, Animals and Choanozoa share most recent common ancestor.

Thus, animals are most closely related to Choanozoa.

You might be interested in
Hunt and her team designed an experiment to test her hypothesis about the effect of BPA on mice. They administered daily doses o
katovenus [111]

Answer and Explanation: The figure below shows the doses of BPA administered to the female mice over time.

An experiment is used to determine cause and effect among variables. When the research is for the impact of a treatment, researchers randomly separate individuals in two groups:

  • <em><u>Control</u></em> <em><u>Group</u></em> doesn't receive any treament or a placebo or a treatment whose outcome is already known;
  • <em><u>Treatment</u></em> <em><u>Group</u></em> receives the treatment;

For the female mice on the image below, in the First Group is not injected any dosage of BPA, so they are the control group, while the <u>others</u> are <u>treatment group</u>.

The variables in a experiment are classified as independents or dependents:

  • <em><u>Independent</u></em> <em><u>Variable</u></em> is the cause;
  • <em><u>Dependent</u></em> <em><u>Variable</u></em> is the effect;

For the BPA research, since it is the effect of BPA over time on the mice's cells it is being investigated, <u>dosage</u> of BPA is the <u>independent</u> variable and <em>time</em> is the <em>dependent</em> variable.

6 0
2 years ago
Atomic mass is determined by the number of protons plus the number of
Luda [366]
Atomic mass is determined by the number of protons plus the number of neutrons 
7 0
3 years ago
R-organisms reproduce at a very high rate. Knowing this, why don’t they usually reach their carrying capacity? a. They live in e
Tamiku [17]

Answer:

D: a and b only

Explanation:

8 0
2 years ago
State the plant phylum which is characterised by the absence of vascular tissue​
Alexxx [7]

Answer:

Bryophytes is the answer.

4 0
2 years ago
Read 2 more answers
Adaptations often give organisms a competetive edge. true or false
valkas [14]
Adaptations can give an organism a competitive edge but adaptations are not always used for completion against other species
4 0
3 years ago
Other questions:
  • Food molecules are broken down to release energy in the?
    10·1 answer
  • A stable pond ecosystem would not contain
    13·1 answer
  • What part of a cell prevents water from entering the cell?
    10·2 answers
  • How do plants on earth affect the amount of carbon in earths atmosphere
    15·1 answer
  • Under which of these conditions would scientists use the polymerase chain reaction (PCR) before they analyze a DNA sample?
    9·1 answer
  • How does nuclear power compare to coal, oil, and natural gas?
    10·1 answer
  • Which of these does the sun provide in large amounts?
    5·2 answers
  • Which characteristics do all bony and jawless fish have in common? Check all that apply.
    12·2 answers
  • All viruses rely on<br> friends<br><br> themselves<br><br> a host<br><br> the weather
    9·1 answer
  • Part B
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!