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Jellyfish

Found in every ocean, jellyfish are not technically "fish." Jellies have an umbrella like structure that allows them to float beautifully in the water. Watch out though, some of them sting!

1,930 Questions

What does the Portuguese Man'O'War eat?

any small fish or animal that they can capture with there tenticals

What is the phylum class order family genus species of cnidaria?

In the Phylum Cnidaria there are quite a few classes; Anthozoa, corals Cubozoa, box jellies Scyphozoa, jellyfish Hydrozoa, hydras Each of these classes have numerous orders, families and genera and species of their own. There are 215 scyphozoans, for example and thousands of anthozoans...

Are jellyfish real?

There possed to be a cryptid that fly in the air they could exist I think they do

Actually they are a recently discovered electrical phenomena known as red sprites.

Is a comb jellies a consumer?

It depends on what the jellyfish eat if the jellyfish does not make its own food it is a consumer

Do jellyfish use mitosis or meiosis?

Jellyfish primarily use meiosis for reproduction. During meiosis, the jellyfish's cells divide to create sex cells that have half the number of chromosomes, allowing for genetic diversity in offspring. Mitosis, on the other hand, is the process of cell division for growth and repair.

What is the anatomy of a jellyfish?

Most jellyfish do not have specialized digestive, osmoregulatory, central nervous, respiratory, or circulatory systems. The manubrium is a stalk-like structure hanging down from the center of the underside, with the mouth at its tip. This opens into the gastrovascular cavity, where digestion takes place and nutrients are absorbed. It is joined to the radial canals which extend to the margin of the bell. Jellyfish do not need a respiratory system since their skin is thin enough that the body is oxygenated by diffusion. They have limited control over movement, but can use their hydrostatic skeleton to navigate through contraction-pulsations of the bell-like body; some species actively swim most of the time, while others are mostly passive. Depending on the species, the body contains between 95 and 98% water. Most of the umbrella mass is a gelatinous material - the jelly - called mesoglea which is surrounded by two layers of protective skin. The top layer is called the epidermis, and the inner layer is referred to as gastrodermis, which lines the gut.

Do jellyfish glow at night?

Yes, some jellyfish are bioluminescent, meaning they can produce light themselves. This bioluminescence often makes them glow in the dark, creating a beautiful display underwater.

What causes Wallenberg syndrome?

Wallenberg syndrome, also known as lateral medullary syndrome, is caused by a blockage of the blood supply to the lateral part of the medulla in the brainstem. This blockage typically occurs from a blood clot or other vascular issue, leading to symptoms such as difficulty swallowing, hoarseness, vertigo, and facial numbness or weakness on one side of the face.

What causes Gerstmann syndrome?

In adults, Gerstmann syndrome may be acquired when bleeding into the brain during a stroke or after a traumatic head injury occurs in an area of the left parietal lobe called the angular gyrus.

What causes Raynaud's syndrome?

Raynaud's syndrome is caused by a narrowing of blood vessels in response to cold temperatures or stress, leading to reduced blood flow to certain body parts, usually fingers and toes. This can result in color changes in the skin and sensation changes in affected areas. The exact cause of Raynaud's syndrome is not fully understood, but it is believed to involve a combination of genetic and environmental factors.

What is different about the jellyfish in Jellyfish Lake?

thousands of years ago, millions of jellyfish were trapped in the lake, when a submerged reef rose from the sea. the jellyfish adapted to their surroundings by losing their sting completely. you can now swim safely with sixteen million jellyfish in jellyfish lake.

Why are most victims unaware of the presence of jellyfish?

Jellyfish can be transparent and difficult to see in the water, making them hard to detect. They also move silently and may not cause immediate pain upon contact, leading to victims being unaware of their presence until they are stung. Additionally, some jellyfish species have a mild sting that may go unnoticed at first.

Is it possible to put jellyfish DNA in a human and have the human glow?

No, it is not possible to put jellyfish DNA into a human and have the human glow. The glowing property in jellyfish comes from a protein called green fluorescent protein (GFP), which would not work the same way in a human body due to differences in biology and genetic makeup.

Are blue bottles jellyfish?

Yes, blue bottles are a type of jellyfish. They are also known as Portuguese man o' war and have long tentacles that can deliver a painful sting.

What is the function of a cnidocyte cell?

Cnidocytes are specialized cells found in cnidarians (such as jellyfish and sea anemones) that contain stinging organelles called nematocysts. The function of a cnidocyte cell is to capture prey or defend against predators by discharging venom-filled nematocysts in response to touch or chemical stimuli.

What is the advantage of the medusa over the attached polyp in the Cnidarian?

The advantage of a medusa body form over the attached polyp form in Cnidarians is increased mobility. Medusas are free-swimming and can move through the water, allowing them to spread and find food more easily. This mobility also facilitates reproduction as medusas can disperse gametes over a wider area.

Identify the organisms that exist as either medusa or polyp form?

Jellyfish exist as either a medusa (adult free-floating) or polyp (immature attached) form during their life cycle. Another example is the Portuguese Man o' War, which also has a medusa (floating) and polyp (attached) stage.

How much are jellyfish worth?

The value of jellyfish can vary depending on the species, size, and demand. Some jellyfish are considered a delicacy in certain cuisines and can be sold for high prices in seafood markets. Others, like moon jellyfish, are often used as aquarium pets and can range in price from $10 to $100.

Is a free swimming form of a cnidarian called a polyp?

No, a free swimming form of a cnidarian is called a medusa. Polyps are typically attached to a substrate and have a cylindrical body with a mouth surrounded by tentacles at one end. Medusae have a bell-shaped body with tentacles hanging down.

What are special traits stinging cells?

Stinging cells, also known as cnidocytes, are unique to cnidarians. They contain a specialized structure called a nematocyst that can inject toxins into prey or predators. This enables cnidarians to defend themselves, capture prey, and deter predators.

What are some special traits of stinging cells?

Stinging cells contain a specialized organelle called a cnidocyte that releases toxins when triggered. These toxins can immobilize or kill prey, and in some cases, deter predators. The cells are found in organisms like jellyfish and hydra, and are important for defense and capturing food.

What causes the itchy feeling when one swims in waters infested with jellyfish?

Jellyfish release venom through their tentacles when they sting, which triggers an immune response in our skin. This immune response causes the surrounding area to become inflamed, leading to itching and skin irritation. Additionally, some jellyfish venom contains histamine, which can further exacerbate itching.