0
Sponges (poriferans) are very simple animals that live permanently attached to a location in the water - they are sessile as adults. There are from 5,000 to 10,000 known species of sponges. Most sponges live in salt water - only about 150 species live in fresh water. Sponges evolved over 500 million years ago.
The body of this primitive animal has thousands of pores which let water flow through it continually. Sponges obtain nourishment and oxygen from this flowing water. The flowing water also carries out waste products.
What else can I help you with?
Why were sponges first classified as pants?
no they are animals
What do Early scientists classified sponges as?
Rfjdbd dn
Why are sponges classified as animals than plants?
due to their internal and external structures
Why do you think a sponged is classified as n animal?
Because there are living cells in it(Ocean Sponges)
Fishes amphibians repitiles birds and mammals are classified in the phylum porifera?
The phylum Porifera is sponges.
Why are sponges classified as an animal?
Sponges are classified as animals because they are multicellular, heterotrophic organisms that lack cell walls. They also have specialized cells and tissues, even though they lack complex organ systems.
How many types of sponges are there?
There are four classes of sponges classified so far. The classification is based on the difference in basic cell structure and type. They are,Calcarea - has single nuclues and single external membrane.Glass Sponges - has multinucleated cell.Demosponges - same as calcerea but their spicules are made of silica whereas for Calcarea it is made of calcite.Homoscleromorpha - same as Demosponges except for the different body structure it has. It is the most recently classified class.
Sponges are classified as animals because they cannot?
because they cannot produce there own food like other plants!
What did early scientists classify sponges as?
Early scientists classified sponges as plants because of their stationary nature and lack of obvious sensory organs. It was not until the 18th century that sponges were recognized as animals due to their ability to move, feed, and reproduce like other animals.
Why did early naturalists mistake sponges for plants instead of animals?
Early naturalists mistakenly classified sponges as plants instead of animals because sponges lack typical animal characteristics such as organs, tissues, and mobility. Additionally, sponges were often found attached to rocks or other surfaces, resembling plants rooted in the ground. This led to the initial confusion in classification.
Why are sponges considered animals?
Sponges are considered animals because they are multicellular organisms that lack cell walls, have specialized cells, and are capable of consuming food to obtain energy. They also have a simple body structure and are classified as part of the animal kingdom.
Do sponges have tissues?
No, sponges do not have true tissues like other animals. They are classified as Porifera and are considered the simplest animals, lacking specialized tissues and organs. Sponges have a porous body structure with specialized cells but no distinct tissue layers.
