Sponges are obviously animals, why do so many people treat them as plants?

Because the sponge can't walk, it can only stay on the rocks on its own, and it looks like a stationary plant.

Because this animal has no backbone, and then the body is softer to the touch, and at the same time very sponge-like, and people are relatively unaware of this.

Because the living area is not near the sea, many of them are inland. Then everyone who sees the sponge must not think that it is an animal. Because the sponge itself is relatively soft, like a plant. That's why sponges are treated as plants.

Because the sponge looks like it looks like it belongs to plants. And it has a certain viewability. As a result, some people have misclassified sponges.

Because many people think that a sponge can't move, they think it's a plant.

Sponges are animals.

The sponge has neither a head, nor a tail, nor a trunk, nor limbs, nor nerves nor organs. The main components of sponge cells are calcium carbonate or silicon carbonate and a large amount of collagen.

In waters with strong currents, the height of the sponge is generally less than a centimeter, and the surface of the sponge forms many streamlined lines, which can avoid being broken by waves and currents. Some sponges like to burrow, burrowing holes in the shells of abalone and oysters, and then settling on their shells. Sponges come in a variety of sizes, from small ones of just a few grams to large ones of up to 45 kilograms, and the largest sponges span meters long.

The colors of the sponge are equally colorful.

The shape of the sponge group varies greatly, and the monomer is generally cone-shaped, disc-shaped, goblet-shaped, spherical, etc. The size varies from a few millimeters to 2 meters. The shapes of sponges are varied, including flakes, blocks, sphericals, fans, tubes, bottles, pots, and branches.

Morphological characteristics of sponges

Although sponges are animals, they cannot walk on their own, but can only attach themselves to the reefs on the bottom of the sea and obtain food from the seawater that flows around them. Most sponges live on the substrate of hard rock.

The predation method of sponges is a filter feeding method, and each small hole in the wall of the monomeric sponge body is a "mouth". Sponges vibrate the flagella of the body wall so that seawater containing bait continuously penetrates into the cavity through these small pores.

There are numerous collar flagellation cells in the inner wall, which fluctuate rapidly from the base to the apical end, creating a gravitational pull in the same direction. When seawater seeps through the body wall, nutrients in the water are captured and swallowed by the flagellated cells. After digestion and absorption, the indigestible substances are discharged from the water outlet.

Hello dear<>

Here's a look at whether a sponge is an animal or a plant based on the question you provided: Sponges (scientific name: porifera) are a class of multicellular organisms that belong to the kingdom Animalia, not plants.

Unlike other animals, sponges have no real tissues and organs, and their bodies are simple in structure, consisting of many channels and chambers, and are filled with dust and water, through which water can be used for breathing and nutrient intake. The body surface of the sponge has many small and large pores that are used for the entry and exit of water flow and filtration. Sponges are widely distributed in the ocean and are important members of the marine ecosystem, and also have certain economic value.

Summary. Sponges belong to animals and are multicellular invertebrates. They do not have a clear differentiation of organs and tissues, and the structure of the body is relatively simple, consisting of a few cells and bone needles scattered within the cavernous body.

They suck in water through tiny pores (called protopores) and filter out nutrients from the water, and are a benthic organism that grows in the ocean, freshwater, and the area where the ocean meets freshwater.

Sponges belong to animals and are multicellular invertebrates. They do not have obvious differentiation of organs and tissues, and the conjunctival fluid of the body is relatively simple, consisting of a few cells and bone needles scattered throughout the cavernous body. They suck in water through tiny pores (called protopores) and filter out nutrients from the water, and are a benthic organism that grows in oceans, freshwaters, and areas where oceans and freshwater meet.

When people think of sponges, many people may mistake them for plants or other creatures that resemble sunflowers. But in fact, sponges are a unique class of animals that are classified as multicellular invertebrates. Here are some of the characteristics and biological characteristics of sponges:

1.Sponges do not have obvious differentiation of organs and tissues, and their body structure is relatively simple. They are made up of many cells and bone needles that are linked together by secreted collagen to form a porous structure.

2.The sponge has many small holes inside its body called protopores. These protopores allow water to flow freely into the cavernous body.

Some tiny cells, called flagellar cells, can create a stream of water inside the sponge so that nutrients can be filtered out of the water. 3.The sponge does not actively move and is usually fixed in one position.

They grow in oceans, freshwater, and areas where oceans and freshwater meet, and are usually a class of benthic organisms. 4.The way sponges reproduce is also relatively unique.

They can be used to reproduce offspring through sexual and asexual reproduction. In asexual reproduction, some cells within the cavernous body can differentiate to form a new cavernous body. Overall, sponges are a very special creature.

Their bodies are structurally simple, with no significant organ and tissue differentiation, but they are able to obtain nutrients from water through their own filtration system. These characteristics give sponges a unique place in the biological world and are an important part of our understanding of biodiversity.