Explain why an earthworm will die if it dries out based on the type of skeleton annelids have and the absence of a respiratory organ or system in the earthworm.

Answers

Answer 1

We can confirm, based on the type of skeleton and lack of a respiratory organ, that a worm will die if it dries out due to the fact that the exchange of gases happens through the mucus on its skin.

As stated in the question, Earthworms do not possess any form of respiratory organs. To account for this, they have evolved the ability to breathe through their skin. This ability is due to what is known as a hydrostatic skeleton, possessed by most annelids.

This skeleton is covered in mucus and allows the exchange of gases with its surroundings, therefore, if the worm were to dry up, the mucus that encases the skeleton would harden and thus prevent the interchanging of oxygen and carbon dioxide. Effectively, the worm would not be able to breathe and would die.

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Related Questions

In wolves, gray coat color (G) is dominant to black (g) and brown eyes (B) are dominant to blue (b). The genes that control these traits are located on different chromosomes. The alpha male of the pack has the dominant phenotype for both traits and is heterozygous for both traits. The alpha female has brown eyes and a black coat; she is heterozygous for eye color. Which option represents gametes that would be made by the alpha female

Answers

The combination of gametes that will be produced by the Alpha female is Bg, Bg, bg and bg.

According to this question, two genes coding for eye color and coat color in wolves are involved. Gray coat color (G) is dominant to black coat color (g) while brown eyes (B) are dominant to blue eyes (b).

The alpha female of the pack is said to have a brown eyes and a black coat (gg) but she is heterozygous for eye color (Bb). This means that she posseses the following genotype: Bbgg.

According to Mendel in his law of independent assortment, alleles of a gene will segregate into gametes independently of one another.

This means that the alpha female with genotype (Bbgg) will segregate into the following combinations of gametes: Bg, Bg, bg and bg.

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True or False: A positive ion and a negative ion will repel each other.

Answers

Answer:

FALSE     is correct

Explanation: Questions protected!

Does sugar free red bull have energy for cellular respiration and if so what kind?

Answers

Answer:  yes my man

Explanation:

Answer:

Red Bull Zero and Red Bull Sugarfree contain the same main ingredients – caffeine, taurine and some B-group vitamins. Both are made without sugar, instead using different low calorie sweeteners.

Explanation:

Articulations are classified by their function or structure. Which of the following is an example of functional classification?

Answers

Answer:

d. Synarthrotic joints  

Explanation:  is correct for the choices offered.

PLS HELPPPPP


How can using a dam as a source of freshwater also harm wildlife?
A. Dams help control floodwaters.
B. Dams provide drinking water.
C. Dams displace existing habitats.
Ο Ο
D. Dams provide water recreation.

Answers

Answer:

c

Explanation:

because its the only one that would be hurting wild life.

Using a dam as a source of freshwater can harm wildlife by displacing existing habitats. Therefore, option (C) is correct.

What are the negative impacts of dams?

Dams often require the creation of reservoirs, which can submerge large areas of land and alter the natural flow of rivers and streams. This can lead to the loss of important habitats for fish, mammals, and other wildlife that rely on rivers and streams for food, shelter, and reproduction.

In addition, changes in water temperature, dissolved oxygen levels, and water flow can negatively impact aquatic ecosystems downstream from the dam.

These impacts can be mitigated through careful planning and management, such as the creation of fish ladders and other structures to help fish navigate past the dam, and the release of water at appropriate times to mimic natural flow patterns.

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Describe the two types of speciation (in your own way) pleaseee thank you

Answers

Dk guy ggghgygyggggfgygggfggy

could someone help pls (pic with question attached)

Answers

my reasoning for this is coo and i

Which of the following is true about cells?

A. A cell’s components are all identical and perform the same function.

B. Cells have specialized components that all perform the same functions.

C. A cell has a single component that performs all of the cell’s different, specific functions.

D. Cells have specialized components that perform different, specific functions.

Answers

Answer:

D

Explanation:

Hope this helps

What is the role of knowing the Earth's history to mankind?​

Answers

Answer:

Earth history enables us to understand those changes which no human being has ever seen (or if they have, they didn't record it) and to relate them to modern changes. Such events include: The rise and extinction of the dinosaurs. The formation of the Grand Canyon.

Explanation:

Answer:

Earth history enables us to understand those changes which no human being has ever seen (or if they have, they didn't record it) and to relate them to modern changes. Such events include: The rise and extinction of the dinosaurs. The formation of the Grand Canyon.

hope it's helpful

thank you

Share three ways you would take to reduce water pollution.

Answers

1. Pick up trash
2. Don’t use fertilizer
3. Save water by using less showering, not letting water run while brushing teeth

Individual A, who is suffering from cardiovascular disease consume a set of briyani rice
daily for a long period of time.
Discuss the effects of the diet to his health.
[10 markah/ marks]

Answers

Answer:

Eating whole grains like brown basmati rice is linked to a lower risk of heart disease. Whole grains help to reduce blood cholesterol levels.

https://www.webmd.com/diet/health-benefits-basmati-rice#1

Which of the following is not a characteristic of lakes? A) deeper than ponds B) lack of waves C) found in mountainous regions D) larger than ponds E) fed by rivers

Answers

Answer: E - Fed by rivers

How is Wallace's view scientific

Answers

Wallace argues that changes in species are not a result of specific individual needs of organisms to adapt to their environment. Rather, "he states that some qualities of an individual may allow it to outlive another individual without those qualities."

Look at the diagram. Name organ 4.

Answers

that’s the liver, The liver is an organ about the size of a football. It sits just under your rib cage on the right side of your abdomen. The liver is essential for digesting food and ridding your body of toxic substances

Answer:

That's the liver

Explanation:

Just look up "Liver Diagram"

answe rir plssssessSSSSSS​

Answers

Answer: Salva is the nursery for the monsoon paddy crop. ... Dalva : They sow a winter crop referred to as dalva from the month of the Gregorian calendar month.

Environment: Polluted Forest Moths Released G1 G2 G3 G4 G5 Typica 125 88 83 76 29 Carbonaria 510 735 885 1042 1406 Total 635 823 968 1118 1435 Phenotype Frequency Color Initial Frequency Frequency G5 Typica Light 9 Carbonaria Dark Allele Frequency Allele Initial Allele Frequency G5 Allele Frequency q d p D Genotype Frequency Moths Genotype Color Moths Released Initial Frequency Frequency G5 Number of Moths G5 q2 Typica dd Light 2pq Carbonaria Dd Dark p2 Carbonaria DD Dark

Answers

The recessive allele frequency decreased (q = 0.14) and the dominant one increased (p = 0.86). Genotypic frequencies followed this tendency too (q² =0.02, 2pq = 0.24 and p² = 0.74). The Carbonaria phenotype increased to 0.98, while Typica showed a frequency of 0.02.  

------------------------------------------

Available data:

Some moths were released in the forest (N=1000). 250 were white, and 750 were black.

The color is defined by a single diallelic gene. The dominant allele -D- codes for black color (carbonaria), while the recessive allele -d- codes for white (Typica).

These individuals produced five new generations since they were released, G1, G2, G3, G4, G5.

                     

                     Moths realesed         G1          G2         G3         G4         G5        

Typica                     250                  125         88          83          76          29

Carbonaria             750                   510         735       885      1042      1406

Total                       1000                  635        823        968      1118       1435

Phenotype frequencies

                       Color             Initial Frequency               G5 Frequency                      

 

Typica             white                       0.25                                                

Carbonaria      Black                       0.75                                                

Allele Frequencies

                         Allele        Initial Allele Frequency     G5 Allele Frequency        

q                           d                            0.5                                                      

p                          D                            0.5                                                        

Genotype Frequency

        Moths   Genotype Color  Released  Initi.Freq.   G5 Freq.   Nº F5 moths

q²      Typica        dd       White      250           0.25                                        

2pq  Carbon.      Dd       Black       500           0.50                                        

p²     Carbon.      DD       Black       250           0.25                                        

This information is guiding you to know how to calculate frequencies and total numbers. Information about released individuals is an example of how you need to proceed.

Firts, we will assume that this population is under Hardy-Weinberg equilibrium. So let us review some theoretical framework.

The allelic frequencies in a locus ⇒ p and q dominant and  

                                                                               recessive alleles.

The genotypic frequencies after one generation are (H0m0zyg0us dominant), 2pq (Heterozyg0us), (H0m0zyg0us recessive).

If a populations is in H-W equilibrium, it will get the same allelic frequencies generation after generation.  

The sum of allelic frequencies equals 1 ⇒ p + q = 1.

The sum of genotypic frequencies equals 1 ⇒ p² + 2pq + q² = 1

Now let us analyze the problem.

We need to get information on G5 generation. We will do it step by step.

1) Phenotype frequencies

To get the Phenotype frequencies, we just need to divide the number of individuals with each phenotype by the total number of individuals in this generation. So,

Total number of individuals in G5  →  1435 White = Typica = 29 individuals Black = Carbonaria = 1406 individuals

F(Typica) = 29 / 1435 = 0.02  

F(Carbonaria) = 1406 / 1435 = 0.979 ≅ 0.98    

2) Allelic Frequencies

We can use the phenotypic frequencies to get the allelic frequencies.

Remember that carbonaria (black) moths include h0m0zyg0us dominant (DD) and heter0zyg0us (Dd) individuals. So we can not get the allelic frequencies from this data.

We can only use the allelic frequency of Typica (White) individuals. Typica phenotypic frequency only includes h0m0zyg0us recessive individuals, dd.

We know that,

H0m0zyg0us recessive genotype  →  dd

Genotypic frequency →  F(dd) → Represented as q²            

F(Typica) = F(dd) = = 0.02

Recessive allele → d

Recessive allelic frequency →  f(d) → Represented as q

f(d) = q = ??

q² = 0.02

q = √ 0.02

q = 0.1414 ≅ 0.14

0.14 is the recessive allelic frequency. Now we should calculate the dominant allelic frequency. To do this, we will clear the following formula,

p + q = 1

p + 0.14 = 1

p = 1 - 0.14

p = 0.86

So, now we also know that

f(D) = p = 0.86

f(d) = q = 0.14

3) Genotypic Frequencies

Now, we need to get the genotypic frequencies, F(xx)

⇒ F(DD) = p² = 0.86² = 0.7396 ≅ 0.74

F(Dd) = 2pq = 2 x 0.86 x 0.14 = 0.24

F(dd) = q² = 0.14² = 0.0196 ≅ 0.02    

4) Number of individuals

Finally, we need to tell the number of individuals with each genotype. We just need to multiply each frequency by the total number of individuals in G5.

F(DD) = p² = 0.74

F(Dd) = 2pq = 0.24

F(dd) = q² = 0.02    

Total number of individuals = 1435

⇒ DD Black -Carbonaria- individuals → 0.74 x 1435 = 1,061.9 ≅ 1062

⇒ Dd Black -Carbonaria- individuals → 0.24 x 1435 = 344.4 ≅ 344

⇒ dd White -Typica- individuals → 0.02 x 1435 = 28.7 ≅ 29

From this results, we can conclude that the moths population is not in H-W equilibrium, because their allelic and genotypic frequencies changed through generations.

It seems that Natural selection is favoring the dominant phenotype by increasing the frequency of the dominant allele over the recessive one. Probably directional selection is acting on this population.

----------------------------------

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What is the phase shown below?

Prophase
Metaphase
Telophase
Anaphase

Answers

Answer:

Telophase

Explanation:

Telophase is the answerrr

What of the following best explains the pace and timing of evolutionary change?

A: Evolutionary change quickly and constantly occurs throughout time.

B: The pace of evolutionary change has slowed down over time, and it only rarely occurs now.

C: Periods during which evolution occurred were always preceded by a catastrophe.

D: Long periods of stability were punctuated with periods of evolutionary change.

Answers

Answer:

B: The pace of evolutionary change has slowed down over time, and it only rarely occurs now.

Explanation:

What of the following best explains the pace and timing of evolutionary change The pace of evolutionary change has slowed down over time, and it only rarely occurs now.

Answer:

D: Long periods of stability were punctuated with periods of evolutionary change.

Explanation:

Fungi have chlorophyll.

True
False

Answers

False- unlike plants fungi to not have chlorophyl.

Why- Fungi do not need the sun to make food instead they break down their own food.

Hope this helped

if you can may I have brainlist

PLSSS HELP! IF CORRECT, WILL MARK BRAINLIEST


Following the fusion of an egg cell and sperm cell, the resulting diploid cell divides by mitosis to create two new daughter cells. Each daughter cell contains pairs of chromosomes, with one set inherited from each parent.


Which of the following best describes the pairs of chromosomes that are present in each newly formed daughter cell?


Choose 1 answer:


A) The pairs are homologous chromosomes that have the same set of genes, but likely different variations of those genes.


B) The pairs are non-homologous chromosomes that contain different sets of genes.


C) The pairs are homologous chromosomes that have identical copies of every gene.

Answers

Answer: A

i have no idea why

The pairs are homologous chromosomes that have the same set of genes, but likely different variations of those genes. The correct option is A.

What are homologous chromosomes?

Among a pair of chromosomes with the very same gene sequence, loci, chromosomal size, and centromere location is referred to as a homologous chromosome.

One paternal and one maternal chromosome make up a homologous pair. In humans, the nucleus of a somatic cell contains 46 chromosomes.

Homologous chromosomes differ from sister chromatids because they are not identical and do not emanates from the same organism.

Sister chromatids are identical, side-by-side duplicates of each other that form as a result of DNA replication.

Homologous chromosomes do not pair together during mitosis. Homologous chromosomes line up end-to-end in mitosis so that when the cells divide, each daughter cell receives a sister chromatid from both members of the homologous pair.

Thus, the correct option is A.

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What is conditioning?

Answers

Answer:

conditioning, in physiology, a behavioral process whereby a response becomes more frequent or more predictable in a given environment as a result of reinforcement, with reinforcement typically being a stimulus or reward for a desired response.

Explanation:

Human cells have _____ sets of DNA in each cell.


A) 2

B) 4

C) 1

D) 8

Answers

Answer:

See answer below.

Answer is verified.

Explanation:

Human cells have two sets of DNA in each cell.

And a total of 46 chromosomes in each cell.

Please mark Brainliest.

Thanks!

Human cells have two sets of DNA in each cell. Thus, the correct option is A.

What is DNA?

DNA stands for Deoxyribonucleic acid. It is considered the genetic material of most organisms. It consists of base pairs like adenine, thymine, guanine, and cytosine.

Human cells have two sets of DNA in each cell, one came from the paternal side while the other came from the maternal side.

Therefore, it is well described above.

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Many scientists consider genetic engineering to be simply an efficient method of selective breeding. Is it?

Answers

Yes…yes it is in fact

The movement of tectonic plates in two locations is described below:

Location A: Tectonic plates collide and one plate moves over the other while the other plate is pushed deep into the mantle
Location B: Tectonic plates slide past each other
PLS HELP I WILL GIVE BRAIBLIEST AND 100 POINTS
Which statement is most likely correct?

Volcanic eruptions may occur in both locations.
There is no chance of earthquakes in the two locations.
Mountains may form in Location B but not in Location A.
Subduction happens in Location A but not in Location B.

Answers

Explanation:

volcanic eruption may occur in both location

Answer: D

Explanation subduction happens when one plate is ontop of another and pushes it into the matel

hope this helps :)

One of the following statements is correct about glycolysis:

A.Net gain of only 2 ATP.
B.Glycolysis in fermentation reaction requires more oxygen than glycolysis in aerobic respiration
C.Carbon dioxide is used during glycolysis to form ATP.
D.Only animals can carry on glycolysis.

Answers

Answer:

A.

Explanation:

Glycolysis produces 4 ATP molecules in total, however 2 ATP molecules are used to convert a glucose molecule into a new 6 carbon compound with 2 phosphates attached to it. So, the net yield of ATP is 2 molecules.

Answer:

A net gain of only 2 ATP

Explanation:

Which weather conditions will most likely cause heavy rain and cooler temperatures? (A. Cold front) (B. Seabreeze) (c. warm front) (D. Land breeze)

Answers

Answer:

a. cold front

Explanation:

Many fronts cause weather events such as rain, thunderstorms, gusty winds, and tornadoes. At a cold front, there may be dramatic thunderstorms.

hope this helps

Answer is a that’s what it usually is

The concept of race is socially constructed,meaning that it is something defined by our society

1.True
2.False

Answers

False.

Races are a well-known diversity.

Question 3
2 pts
The genetic code found on
gives cells instructions for building specific
which are machine-like molecules that can carry out specific functions in a cell..
O DNA, proteins
O cells, mitochondria
O chromosomes, genes
O genes, liposomes

Answers

Answer:

im pretty sure it is DNA,proteins

Explanation:

write on the mechanism of hearing and balancing of the ear​

Answers

Answer:

what?

Explanation:

Which of the following statements is TRUE during depolarization?

Answers

Answer:

a is correct

Explanation:

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