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
viva [34]
3 years ago
10

Two students are planning an experiment that will test how planaria (aquatic flatworms) respond to different environments. They

will conduct two investigations—one that tests the worms’ responses to different water temperatures and one that tests the worms’ responses to different levels of acidity. Student 1 wants to buy two groups of flatworms and use a different group for each investigation. Student 2 thinks the same group of worms should be used for both investigations. Do you think either student’s method would give more accurate results? Why or why not? Explain your response.
Biology
2 answers:
svp [43]3 years ago
5 0

Answer:

The Student 1's method would bring more accurate results.

Explanation:

Student 1 wishes to use 3 healthy worm groups. The first group goes to environments with different water temperatures and the second group goes to an environment with different levels of acidity. As both groups had the same level of health it is possible to compare well the difference of influence of each environment on these worms. In addition, the third group was not placed in any different environment, so it remains healthy, so when compared to groups 1 and 2, it will be possible to know the different influences that the environment provided to healthy worms.

On the other hand, Student 2's method would use a single group for all environments and this would not show reliable results because the worm would accumulate effects from all the environments in which it entered.

Delicious77 [7]3 years ago
4 0

Student 1’s methods would be more accurate, because the student would control more factors. Only one variable at a time (either temperature or acidity) would be tested on each group of worms. On the other hand, Student 2 is testing both factors on all the worms, which could make the results unclear.


You might be interested in
You are with a person who is responsive and showing signs and symptoms of a life threatening condition
Ede4ka [16]
Is this a question or a moment of someone needing advice?
4 0
3 years ago
The graphs above show a change in distribution of beak phenotyzes x, y, and z over 10 generations. notice that beak x completely
Burka [1]
<span>The right answer is A. yes,  the alleles for Beak X could remain in the population as a recessive gene.</span>
5 0
2 years ago
Read 2 more answers
What are sponges? <br> but I need help.
posledela

Answer:

Explanation: Sponges are animals with dense skeletons that are highly adapted to their environments.

3 0
2 years ago
A persons skin and heart cells both have a complete copy of all of the persons chromosomes. Each cell however makes different ty
skad [1K]
Ribosomes.................
6 0
3 years ago
When you hear the term mutation, you usually think of change. But how do mutations influence traits that may be inherited?
lana [24]

Hereditary mutation - may be passed to another generation, occurs in gametes, variation that may enhance survival.

Somatic mutation - not passed from generation to generations, occurs in body cells.

Both- changes in DNA.

<h3><u>Explanation:</u></h3>

Mutations are defined as sudden changes in DNA that takes place by changing a particular nucleotide or a portion of DNA, or even a whole chromosome which has potential to change characters of an organism. Mutation was first proposed by Hugo de Vries who is also known as the Father of Mutation Theory.

Mutations can occur in any cell of body. It may occur in somatic cells, or in germ mother cells. But the mutations that occur in germ mother cells are actually the mutations that are carried forward by the gametes into next generations. Mutation in somatic cells get obliterated as the organism dies. And the Mutation in gamete cells are those mutations which are capable to cause variations in progenies which can led to better survival of the progenies.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following statements is not true? A. Sympathetic has extensive branching of preganglionic fibers; parasympathetic h
    8·2 answers
  • Requirements for ______ increase by 50% during pregnancy. rev: 03_07_2017_qc_cs-81797
    11·1 answer
  • What is a measurement of the earths history divided into time periods
    8·2 answers
  • In a study, researchers put human participants on a treadmill for 10 minutes and then drew blood samples. They found that blood
    7·1 answer
  • Black-bellied seedcrackers have either small beaks (better for eating soft seeds) or large beaks (better for hard seeds). There
    9·2 answers
  • Which scientists played a role in developing the cell theory?
    14·2 answers
  • What is Holmes reaction to Dr.Roylott?
    14·1 answer
  • Jackson lives near the equator. Nighttime for Jackson is _
    12·1 answer
  • What is another type of clean energy?
    9·1 answer
  • Help please asap help me
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!