Write a small note on smallest phylum.
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Porifera is actually the scientific name given to the group of organisms known commonly as sponges. But, unlike SpongeBob, living sponges are neither square in shape nor in interest- they are actually a really important and diverse phylum within the animal kingdom. That's right, sponges are actually living animals and we are going to learn a bit about them here.
Porifera are exclusively aquatic animals. They are found in both fresh and salt water, and in shallow or deep water. Sponges come in all shapes, sizes, and colors. They can be cylindrical in shape, like the yellow tube sponge Aplysina fistularis, wide-mouthed and triangular, like the purple vase sponge Niphates digitalis, sheet-like and encrusting, like the red Spiratrella coccinea, or long and rope-like, like the grey species of Callyspongia.
So, with all this diversity, what makes a sponge a sponge? Well, Porifera of all species have a skeleton composed of fine mesh of little needle-like structures, called spicules, that support the cells of the organism, as well as specialized filtering cells, called choanocytes. But, before we jump into these key features, lets take a moment to understand the body plan of Porifera.
hope it's help you.
Porifera are exclusively aquatic animals. They are found in both fresh and salt water, and in shallow or deep water. Sponges come in all shapes, sizes, and colors. They can be cylindrical in shape, like the yellow tube sponge Aplysina fistularis, wide-mouthed and triangular, like the purple vase sponge Niphates digitalis, sheet-like and encrusting, like the red Spiratrella coccinea, or long and rope-like, like the grey species of Callyspongia.
So, with all this diversity, what makes a sponge a sponge? Well, Porifera of all species have a skeleton composed of fine mesh of little needle-like structures, called spicules, that support the cells of the organism, as well as specialized filtering cells, called choanocytes. But, before we jump into these key features, lets take a moment to understand the body plan of Porifera.
hope it's help you.
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