The cells of organisms found in the phylum Porifera (sponges) are not organized into tissues. What structures are absent in organisms belonging to the phylum Porifera?

A. organelles

B. genes

C. organs

D. cells

Answers

Answer 1
While sponges don’t have tissues they do lack organs.
Answer 2

Tissues are not present in the Phylum Porifera, then there is are no organs. So, the correct option is C.

What is Phylum Porifera?

The members of the phylum Porifera are called sponges which are generally marine and mostly asymmetric animals. These are primitive multicellular animals and have a cellular level organization that lacks tissues.

These organisms belong to the phylum Porifera, which lack most of the structures present in multicellular organisms such as the digestive system, respiratory system, brain, etc.

The body of sponges which is made up of spicules or spongin fibers and these organisms have a water canal system which helps them in digestion, reproduction and capture of their food in marine habitat.

Thus, tissues are not present in the Phylum Porifera, then there is are no organs. So, the correct option is C.

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Related Questions

How does heat transfer between the atmosphere and the ocean affect regional climate?

Answers

Explanation:

Both the ocean and the atmosphere transport roughly equal amounts of heat from Earth's equatorial regions - which are intensely heated by the Sun - toward the icy poles, which receive relatively little solar radiation.

The ocean and atmosphere are constantly in a process of energy exchange (heat transfer) as the ocean bodies serves as heat trap which absorbs the larger portion of the Sun's radiation, which is distributed to surrounding areas as sunlight subsides, with the ocean water also losing moisture due to evaporation.

Areas very close to the ocean, topical regions experience the highest level of evaporation and they inturn experience the highest amount of Rainfall. Hence, dictating the regional climate of the tropics.

Ocean currents also play a major role in ensuring distribution of heat, precipitation and warmth between the equatorial and tropical regions, Hence, patching a sort of balance in regional distribution of heat and Rainfall.

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FASTER RIGHT ANSWER GETS BRIANLY
6. Compare covalent and ionic compounds

Answers

Answer:

In covalent bonds, atoms share electrons, whereas in ionic bonds atoms transfer electrons. The reaction components of covalent bonds are electrically neutral, whereas for ionic bonds they are both charged.

Explanation:

What are the two types of respiration?​

Answers

Answer:

cellular respiration and aerobic respiration

Explanation:

I really need the answer to both of these. If you answer first I’ll give Brainliest

Answers

Answer:

1) carbohydrates

2)protein or nucleic acid

Explanation:

1)carbohydrates(CHO)are made of carbon, hydrogen, and oxygen

2)it's either protein or nucleic acid I'm not sure which one though sorry. Protein contains all 4 of those elements but contains sulphur, and nucleic acid also contains those elements with phosphorus.

Answer:

1). Carbohydrates

2). Protein

I hope this helped ;)

Which of these biomes tends to have the coldest temperatures

Answers

Answer:

tundra

The tundra is the coldest of the biomes. It also receives low amounts of precipitation, making the tundra similar to a desert. Tundra is found in the regions just below the ice caps of the Arctic, extending across North America, to Europe, and Siberia in Asia.

Explanation:

i searched this in google for you :D can i have brainliest :) and have a great day!

What is the function of the valves within the heart and veins? to ensure the production of blood within the body to ensure coordination of the heart cells for pumping blood to ensure that foreign materials do not enter the heart to ensure that blood flows in one direction only

Answers

Answer:

to ensure that blood flows in one direction only

Explanation:

Here, we want to select which of the options is the function of valves within hearts and veins.

Basically, valves serve as control mechanisms in the circulatory system.

By control, it means that they actually dictate the direction in which the blood will flow.

Hence, valves ensures that blood types which is supposed to flow from the heart does not flow towards it and blood types that are meant to flow towards it does not flow away from it

An example of this can be seen in the case of oxygenated and deoxygenated blood.

Both have different flow mechanisms which are controlled by the actions of the valves

Answer:

D. To ensure that blood flows in only one direction

Explanation:

Sir Isaac Newton explained.. Group of answer choices That planets move in ellipses. Why the gravitational force continuously pulls each planet towards the Sun The theory of theories. Planets orbit faster the closer they are to the Sun.

Answers

Answer:

Why the gravitational force continuously pulls each planet towards the Sun

Explanation:

According to Sir Isaac Newton's first law of motion, there is a gravitational force that acts on two objects or planets which always pull it towards the center of the orbit or sun . For example if there is a force that pull the Earth toward the sun, there must be equal and opposite force that also pull the sun towards the Earth.

It is represented by a formular.

F= GMm/r^2

What should you avold while cooking vegetables?
You should avoid (_______) vegetables because their color and flavor can change due to prolonged exposure to heat. ​

Answers

You should not fry vegetables because they will change color an flavor

Answer:

Overcooking

Explanation:

I got it right on my test

#PlatoLivesMatter

which characteristics is unique to animals?

heterotroph

photosynthesis

autotroph

multicellular eukaryote

Answers

multicellular is your answer

In what organelle do molecules move from the ER to the Golgi bodies ?

Answers

It works closely with the thought ER. when a protein is made in the ER something called a transition vesicles is made. the vesicle or sac floats throught the cytoplasm to the golgi apparatus and is absorbed.

The cell organelle through which molecules move from the endoplasmic reticulum (ER) to the Golgi bodies is: Vesicles.

A cell refers to the fundamental (basic) functional and smallest unit of life found in every living organisms.

Cell organelles can be defined as the organs (workers) that are responsible for the performance of various tasks or functions in the body of a living organism such as an animal, plant, and humans, especially for the survival of the organism.

Some examples of cell organelles found in the body of living organisms include the following:

Mitochondria.Nucleus. Cytoplasm.Cell membrane.Chromosome.Golgi apparatus (bodies).Endoplasmic reticulum (ER).Vesicles.

A vesicle is a cell organelle that is saddled with the responsibility of creating a pathway or serving as a medium for molecules (proteins) to be transported from the endoplasmic reticulum (ER) to the Golgi bodies.

In conclusion, a vesicle is considered to be a storage organelle.

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what is a person that studies earth called?

Answers

Answer:

A Geologist cuz geo meanse earth and logist is someone who studies

Explanation:

The Phoenix area of the Southwestern desert typically receives 8 inches of precipitation yearly, in two seasonal patterns. Even though it is an arid region, it has high biological diversity. Thin-leaf trees abound, such as palo verde and desert ironwoods wildlife includes insects, reptiles, many bird species, small rodents, and other mammals. Which factor in the Southwestern desert ecosystem is abiotic?

Answers

A rainstorm can be considered an element in the Southwestern desert ecosystem that is abiotic.

What is an abiotic factor?

An abiotic factor is any type of non-living condition that interacts with organisms (biotic factors) in an ecosystem.

Some examples of abiotic factors may include rainstorms (precipitations), temperature, light conditions, etc.

The range of abiotic factors is a fundamental issue for the survival of organisms that live in an ecosystem.

In conclusion, a rainstorm can be considered an element in the Southwestern desert ecosystem that is abiotic.

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The factor in the Southwestern desert ecosystem that is abiotic is precipitation.

What are abiotic factors?

Abiotic factors are the non-living components of an ecosystem influencing the living organisms' distribution in an area. Precipitation is an abiotic factor that provides water for plants and animals to survive and is a very important part of the ecosystem.

In the Southwestern desert ecosystem, the low precipitation levels resulted in an arid environment which results in the presence of a unique array of plant and animal species that have adapted to survive in these conditions.

Temperature is also another important abiotic factor in the Southwestern desert ecosystem. The high temperatures during the day and low temperature at night influence the behavior and survival of the animals and plants that live in this environment. Wind patterns, soil type, sunlight, etc. are other abiotic factors.

Therefore, the factor in the Southwestern desert ecosystem that is abiotic is precipitation.

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Do homologous structures have the same function in different organisms?

Answers

Answer:

The term “homologous structures” refers specifically to similar structures found in different species that have a common ancestry or developmental origin. Note that homologous structures don’t have to perform the same function in a species, the only requirement is that they are similar in form and exist in species with common ancestry.

Explanation:

jellyfish mushrooms oak trees and bacteria contain cells which component of cell theory does this best illustates

Answers

I saw someone else ask the same question hope this helps!!

Answer:

A. All living things are made of cells

Explanation:

Both plants and animals contain cells, so that's why it is A.

(I also took the quiz and got it right.)

Hope this Helps!

A dehydrated person enters the hospital. The traditional procedure to treat a dehydrated patient is to add saline (salt) solution to their blood. Saline solution is a mixture of salt (solute) and water. However, the nurse accidentally gives the patient distilled (pure) water. What will happen to the person's cells?

Answers

Answer:

The cells will taking-in water and hemolyse

Explanation:

If water is given to dehydrated patients instead of a saline solution, the cells of the patients will take-in water from the surrounding solution by osmosis because distilled water is hypotonic to the red blood cells.  The cytosol has a higher concentration of solutes than distilled water. When this happens, the cells become turgid and burst out its contents, a condition known as hemolysis.

HELP ASAP noww thanks

Answers

Answer:

Large molecules like proteins

Explanation:

They are too big

Answer:

The 2nd one.

Many large molecules (such as glucose and other sugars) can't cross the cell membrane.


5. A region, known as the Ring of Fire, follows the border of the Pacific Ocean basin. Why do so
many earthquakes and volcanoes occur in this region?

A. Numerous tectonic plate boundaries are located along the edges of this region.
B. Transform boundaries completely surround this region of the Pacific Ocean.
C. Only powerful convergent plates are located along the Ring of Fire,
D. Two plates are diverging in the center of the Pacific Ocean

Answers

Answer:

C

Explanation:

i took that test a long time ago

How are the Sun, Moon and Earth aligned during a
full moon?

Answers

Answer:

i do not now

Explanation:

On Earth, water can exist as a solid, a liquid, or a gas. Why?
Α.
Earth is at an ideal temperature due to its distance from the Sun.
B.
Earth rotates counterclockwise as viewed from above the North Pole.
C.
Earth is shaped like a sphere and revolves around the Sun.
O
D.
The Moon takes about 27 days to revolve around Earth.

Answers

Water can exist as a solid,a liquid, or a gas due to A.

Where does the energy come from for many ecosystems

Answers

The energy of many ecosystems comes from the sun ☀️

What does having two layers allow the cell membrane to do?



A. make lipids and phospholipids


B . support the cell wall

C. pass nutrients and wastes through
D. Make Proteins

Answers

Answer:

i think it's B.

Explanation:

good luck :)

Vern and his sister Ella were given permission to use one area of their backyard garden to plant a few plants of their own. They want to plant angiosperms that will grow back next year. Which key words should they look for on the seed packets?

Answers

Answer:

The key term Vern and his sister Ella should look for on the seed packets are either "Sowing Indoors"; "Start Indoors"; "Direct Sow"; or "Sowing Outdoors".

These terms help to understand the best time to begin growing the seeds and whether they are outdoor or indoor plants.

If a seed packet has the term "direct sow after danger of frost" it means the seed should be planted outside only (if there is no starting date given).

1. Scientists use this to estimate the age of the universe.

Answers

Answer:

The best estimate for Earth's age is based on radiometric dating of fragments from the Canyon Diablo iron meteorite.

Explanation:

I'm new to brainly but I hope this helped!

Which word describes this 250 m measurement

Answers

Answer: if you answer mine ill answer yours

Explanation:

BIOLOGY, i need help please

Answers

Answer:

true

Explanation:

Answer:

i'm not 100% sure but i thnk is true

Explanation:

Which are results of poor soil management?


nutrient depletion, desertification, and drought

erosion, nutrient depletion, and desertification

drought, land reclamation, and erosion

desertification, drought, and land reclamation

Answers

erosion, nutrient depletion, and desertification

Answer:

eroison, nutrient depletion, and desertification

Enzymes are protein molecules with a very specific shape that help them carry out chemical reactions. What name is given to the specifically shaped region of the enzyme onto which it attaches to a substrate?


- Substrate

- Active Site

- Allosteric

- Cofactors

Answers

Answer:

active site

Explanation:

Describe organisms that are able to produce enough energy for life processes with no oxygen available.

Answers

Answer:

Plants

Explanation:

Plants turn carbon into oxygen....

Organisms that are able to produce enough energy for life processes with no oxygen available are - prokaryotic organisms such as some bacteria and archaea and eukaryotic organisms such as yeast and lactic acid formation in mammals.

Oxygen is essential for most of the time in the production of energy However, many organisms carry out metabolism without oxygen, or can switch from aerobic to anaerobic cell respiration when oxygen is absent.  

Fermentation is a process that uses an organic molecule to regenerate NAD+ from NADHAnaerobic cellular respiration is a process that uses either inorganic molecules or organic molecules to accept electrons.prokaryotes use anaerobic respiration. For example, the group of archaea called methanogens reduces carbon dioxide to methane to oxidize NADH.

Thus, the correct answer is - prokaryotic organisms and some eukaryotic organisms.

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Everything on earth depends on soil. O True © False​

Answers

Answer:

True

Explanation:

A certain type of bacteriophage replicated by incorporating its own genetic material into the host genome where it passed on to future generation over time. This type of viral reproduction is known as he

Answers

Answer:

photosynthesis maybe?

Explanation:

I believe it is photosynthesis
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