Which phylum to not have an internal or external skeleton or shell?

Answers

Answer 1

Answer:

exoskeleton (from Greek έξω, éxō "outer" and σκελετός, skeletós "skeleton"[1]) is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton (endoskeleton) of, for example, a human. In usage, some of the larger kinds of exoskeletons are known as "shells". Examples of animals with exoskeletons include insects such as grasshoppers and cockroaches, and crustaceans such as crabs and lobsters, as well as the shells of certain sponges and the various groups of shelled molluscs, including those of snails, clams, tusk shells, chitons and nautilus. Some animals, such as the tortoise and turtle (shell page), have both an endoskeleton and an exoskeleton.

Answer 2

Answer:

Phylum Cnidaria

Explanation:

They do not have internal or external skeleton.


Related Questions

A good conclusion restates the hypothesis so that the reader

Answers

Answer:

its b.

Explanation:

Answer:

The one you selected is correct

[Choice B] [Second Choice]

__________________________

A good conclusion restates the hypothesis so that the reader sees how the scientist applied the results to the hypothesis.

The part of the muscular system responsible for movement is
a. cardiac
b. smooth.
c. skeletal.

Answers

C.

the skeletal muscles are attached to the bones which are partly controlled by the central nervous system.

Chapter 26 Microbial Diseases of the Urinary and Reproductive Systems 104) Normal microbiota of the adult vagina consist primarily of A) Lactobacillus. B) Streptococcus. C) Mycobacterium. D) Neisseria. E) Candida. 105) Cystitis is most often caused by A) Escherichia coli. B) Leptospira interrogans. C) Candida albicans. D) Neisseria gonorrhoeae. E) Pseudomonas aeruginosa. 106) Pyelonephritis may result from A) urethritis. B) cystitis. C) ureteritis. D) systemic infections. E) All of the answers are correct. 107) Which of the following is NOT primarily a sexually transmitted infection (STI)

Answers

Answer:

1. A) Lactobacillus

2. A) Escherichia coli. 3.

3. You did not present the answer options, which prevent this question from being answered. However, I will try to help you with the explanation below.

Explanation:

1. An adult vagina has a microbiota, that is, a group of microorganisms. This microbiota is beneficial and exists to promote protection and vaginal balance. Among the microorganisms present in the microbiota, we can mention Lactobacillus, which are responsible for preventing infections and controlling vaginal pH.

2. Cystitis is a urinary infection caused by the bacteria Escherichia coli, which resides in the human body and is important for digestion, but can cause inflammation of the bladder, as well as other stomach bacteria. Cystitis is not a contagious disease and has symptoms such as fever and difficulty urinating.

3. Sexually transmitted diseases are contagious diseases, caused by microorganisms that are transmitted from one person to another during an unprotected sexual act. Therefore, to answer the third question you should look for the answer option that presents a disease that is not transmitted by unprotected sexual contact.

104. Lactobacillus, 105. Escherichia coli, 106. Pyelonephritis, 107. Neisseria gonorrhoeae.

26. The normal microbiota of the adult vagina primarily consists of Lactobacillus. Therefore option A is correct.

Lactobacillus species are the predominant bacteria in the healthy adult vagina. They play a crucial role in maintaining a slightly acidic pH, which helps prevent the overgrowth of harmful microbes.

Lactobacillus produces lactic acid, creating an inhospitable environment for many potential pathogens. This microbial balance is essential for vaginal health and helps protect against infections.

2. Cystitis, which is inflammation of the bladder, is most often caused by Escherichia coli. Therefore option A is correct.

Escherichia coli (E. coli) is the most common causative agent of cystitis. It is a bacterium that normally resides in the intestines.

However, when E. coli enters the urethra and travels up to the bladder, it can cause an infection. Cystitis is more prevalent in females due to their shorter urethra, which provides easier access for bacteria to reach the bladder.

3. Pyelonephritis, a more severe infection involving the kidneys, may result from: All of the answers are correct. Therefore option E is correct.

Pyelonephritis can result from various routes of infection, including urethritis (inflammation of the urethra), cystitis (inflammation of the bladder), and ureteritis (inflammation of the ureters).

Additionally, it may also occur as a complication of systemic infections, where bacteria from other parts of the body spread to the kidneys via the bloodstream.

4. The following is NOT primarily a sexually transmitted infection (STI): Neisseria gonorrhoeae. Therefore option D is correct.

Neisseria gonorrhoeae is a bacterium responsible for the sexually transmitted infection known as gonorrhea. Therefore, it is indeed primarily a sexually transmitted infection (STI).

In summary, the normal vaginal microbiota is mainly composed of Lactobacillus species. Cystitis is most often caused by Escherichia coli, and pyelonephritis can result from various routes of infection.

Neisseria gonorrhoeae is a sexually transmitted infection, making it different from the other listed pathogens.

Know more about Lactobacillus:

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Meiosis and Mutations are both sources of/for:
O Genetic Drift
O Polyploidy
O Mutations
Genetic Diversity

Answers

Answer:

genetic drift

please mark as brainlest

If can do all if not thats fine.

Answers

1: proteins
2: Nucleus
3: Ribosomes
4: Golgi Apparatus
5: Vesicle

Describe how Mendel performed his pea plant experiments.

Answers

Answer:

Every offspring does not look alike they change with the generations

Explanation:

PLEASE HELP ME I WILL GIVE BRIANEST

Into which of the six kingdoms should the organism be placed? Construct a response to state your claim, use evidence, and support with reasoning. Include the list of common characteristics of the kingdom and why it does not belong in the other kingdoms in your justification.

Answers

Answer:

Protist kingdom

Explanation:

The organism in the picture is an amoeba nd it belongs to the protist kingdom.

Amoeba does not have cell wall or a chloroplast and so it cannot be named under the plantae kingdom. It cannot be placed under Archaebacteria or bacteria as the organism has a nucleus. It also contain a psedupodium, so it can be placed under fungi or the animalia kingdom.  

What part of the brain controls the following activity: you breathe faster when you run.
a]cerebrum
b]cerebellum
c]pons
d]medulla oblongata

Answers

Answer:

The answer is D because it is medulla

Explanation:

Hope u like it

Answer:

c:ponds

Explanation:

The pons, while involved in the regulation of functions carried out by the cranial nerves it houses, works together with the medulla oblongata to serve an especially critical role in generating the respiratory rhythm of breathing. Active functioning of the pons may also be fundamental to rapid eye movement .

I need helppp!!!!!!!!

Answers

Answer:

B - 6 picograms

Explanation:

When a cell divides mitotically, the end result is 2 identical daughter cells. With that being said, the cell that is produced will also have the same amount of DNA and, therefore, the same DNA mass of 6 picograms.

Hope this helps you! Have an awesome day!

Do the benefits seem to outweigh the risks of genetically modifying about the glittering gold seahorse Explain your rationale.

plz help ​

Answers

Answer:

yes it does

Explanation:

blood that is short of oxygen is often coloured blue on diagrams. Which blood vessels should be coloured blue, those that carry blood to the lungs or those that carry it back to the heart?

Answers

Answer:

to the lungs

Explanation:

it needs to be reoxygenated so it goes back into the lungs

please help quickly i will give a thanks you will get all the points and brainliest with 5 stars​

Answers

Might be c. Parasitism!

Which components make up the cardiovascular system?
lungs, heart, and blood vessels
heart, blood vessers, and blood
heart, blood, and lungs
lungs, heart, and skin

Answers

Answer:

heart blood vessels and blood

Answer:

Heart, blood vessels, and blood

Explanation:

The heart pumps blood around the body, the blood vessels transport the blood, and the blood is the blood itself

In treisman's theory, a stimulus is broken down into separate feature maps after it is initially registered in area:

Answers

Explanation:

In Treisman's theory, a stimulus is broken down into separate feature maps after it is initially registered in area: A) V1. B) V3. C) V4. D) V5.follow me

click on the graphic below until the correct answer appears.
which applies to a real machine?
work output/work input < 1
work output/work input = 1
work input/work output = 1
work input/work output < 1​

Answers

Answer:

work output/work input < 1

Explanation:

I found it on Quizlet and when I completed the assignment, it showed I got it right. Have a good day!

Roots do all of the following, except ______.
A. absorb water

B. anchor plants in the ground

C. photosynthesis

Answers

Answer:

C. photosynthesis

Explanation:

The main function of roots is to transport water and nutrients to the plant, photosynthesis happens in the chloroplast.

A male peacock's tail is an adaptation to increase his chances of

A)survival

B)finding food

C)getting a mate

D)standing out in a crowd

Answers

Answer:

D

Explanation:

That is a form of copulatory behaviour in peacocks

Answer:

C) getting a mate

Explanation:

A male peacock's tail is a adaptation to attract other peacocks

Even more Explanation:

I took the USA TEST PREP assignment and got it correct. the answer below or above me is wrong. trust me

How does erosion and deposition shape the landscape?

Answers

Answer:

The material moved by erosion is sediment. Deposition occurs when the agents (wind or water) of erosion lay down sediment. Deposition changes the shape of the land. Water's movements (both on land and underground) cause weathering and erosion, which change the land's surface features and create underground formations.

Explanation:

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pacyber.Ims.linc
Population after
natural selection
Original
population
21.
The transition of light colored moths in an original population into dark colored moths after
natural selection occurs is a classic example of
A.Normal selection.
B.Directional selection.
C.Sexual selection.
D.Disruptive selection.

Answers

I think is D,,,,,,,,,,,,,,,,,

what structure controls the secretions of the pituitary gland?

Answers

Answer:

The pituitary gland has two main parts, the anterior pituitary gland and the posterior pituitary gland. The gland is attached to a part of the brain (the hypothalamus) that controls its activity.

Explanation:

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ANSWER ASAP TIMED 25 POINTS
Vocabulary: Define the following vocabulary terms in your own words.
1. Ancestor
2. Trait
3. Population
4. Natural Selection
5. Artificial Selection
6. Variation
7. Environmental Pressure
8. Heredity

Answers

Answer:

Ancestor- Someone that you have descended from. Typically someone you are distantly related to.

Trait- A quality or characteristic specific to a person.

Population- The number of people in an area.

Natural selection- The process where organisms adapt to their environment (this theory was first studied by Charles Darwin).

Artificial Selection- a process used in breeding animals or cultivating plants.

Variation- A change or difference in something.

Environmental pressure- Things that cause the environment to change.

Heredity- Physical or mental characteristics passed on to offspring.

The level of carbon dioxide in the blood is monitored by nerve tissue. If you exercise strenuously, the increase in cellular respiration consumes oxygen from the blood and produces surplus carbon dioxide removed in the blood. Since this physical exertion requires faster breathing to replenish oxygen supplies and carry away carbon dioxide, the carbon dioxide sensors result in signals from the brain to increase breathing rate. After you have rested, and carbon dioxide levels are back to normal, your breathing rate decreases too. This is an example of

Answers

Answer:

Negative feedback.

Explanation:

The normal carbon dioxide levels after resting, the breathing rate also decreases which is an example of negative feedback because the body moves towards stability or equilibrium conditions. There is a direct relationship between breathing rate and carbondioxide levels means if one is increases the other automatically increases in order to maintain homeostasis in the body so we can say that this relationship is very important to maintain .stability in the body

Bluebells in Different Locations
Plants known as bluebells exist in England,
Scotland, and the United States. In each of
these locations, however, the plant known as
a bluebell is very different from the plants
called bluebells in the other two locations.
Which of these is demonstrated by the information above?
O a
b
The need for controlling variables in experiments
The need for classifying and naming organisms scientifically
The importance of predicting trends from scientific data
The importance of questioning experimental evidence
c
Od

Answers

Answer: The need for classifying and naming organisms scientifically

Explanation:

Maintaining homeostasis keeps the internal environment in the body functioning properly. Many organ systems work together and
maintain energy homeostasis. The digestive system is concerned with processing the food that we take in to provide essential
nutrients to the rest of the body. Which of these body systems works most directly with the digestive system in the absorption of
nutrients?

Answers

Answer:

it should be the Small Intestine

Do you think new helpful species of bacteria will evolve with different functions? What would they do? What traits could they have to help them do these things?
please help

i will give brainliest and 5 * and 10 points for the best answer

i don't want to see any link as an answer

if i do you will be reported

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Answer:brainly The French Revolution began less than two decades after the American Revolution. In many ways, the American experience was an inspiration for the citizens of France. But the people of the two countries had different situations and had different concerns, which influenced the way each revolution began, progressed, and ended. In this assignment you will write an essay that compares and contrasts the two revolutions.

Explanation:

Which is the closest synonym for the word harbinger?
A
Satisfaction
B
Selection
C
Illustrator
D
Indicator

Answers

Answer:

i am pretty sure its indicator

Answer:

Indicator:))

Explanation:

hope this helps:)))))

Is it possible for directional selection to create a new species? How?

Answers

Answer:

Directional selection occurs when individuals with traits on one side of the mean in their population survive better or reproduce more than those on the other. ... However, directional selection does not always result in evolution, because it can be constrained in many ways.

Explanation:

The question is in the picture

Answers

Answer:

Nitrogen base

Nitrogen base    I think

Explanation:

HELP WILL GIVE BRAINLIEST IF CORRECT: What effect do plants' roots
have on rock?
a. They hold it together
b. They weather it
c. They cause it to undergo chemical changes
d. They break it apart

Answers

Answer: C

Explanation: Reason why is because whenever the roots put pressure on the rock it cracks open and all the minerals release so it has to be going thru a chemical change because the roots receive the minerals from the rock or stone ...

Answer:

im guessing d but im not sure..,

Explanation:

When these roots grow, they exert pressure on the rock around them, causing the gaps to widen or even crack. Plant roots can also weather rock through chemical processes. When dead roots decompose, they release carbon dioxide; this is sometimes converted into carbonic acid, which chemically breaks down rock into soil.

Compare the concentration of connective tissue cells found in bone with the concentration of those found in blood.

Answers

Answer: CONNECTIVE TISSUE is the most abundant tissue in the body which are widely separated from each other and intercellular substance (matrix) is present in considerably larger amounts. The principal cell of connective tissue are fibroblasts which makes fibres found in almost all connectiv tissues. Some are solid and strong (bone), while others are fluid and flexible( blood).

Explanation:

Connective tissues usually contain fibres present in the matrix which may be of semisolid jelly-like consistency or dense and rigid, depending upon the position and function of the tissue. There are three main types of connective tissue which include:

--> Loose connective tissue

--> Dense connective tissue and

--> specialised connective tissue.

The bone and the blood are considered to be an example of specialised connective tissue. This is so because they both contain a number of different tissues with specialized cells and unique ground substances.

The BONE consists of osteoblasts, osteocytes, and osteoclasts. It is considered to be a specialised connective tissue because the bone cells are surrounded by a matrix of collagen fibres strengthened by inorganic salts, especially calcium and phosphate.

The BLOOD consists of red blood cells, white blood cells, platelets. It is considered to be a specialised connective tissue because the blood cells are surrounded by fluid matrix known as plasma and connecta with other cells through its transport functions.

In COMPARING the concentration of connective tissue cells or bone and blood, the connective tissue cells of bone comsist of fibre and collagen which makes it dense and rigid while the connective tissue cells of blood does not contain any fibre, therefore it's flexible.

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