Answer
Verified
423.9k+ views
Hint: Sponges belong to phylum Porifera. These are marine sponges present in the family spongiidae which was formerly depicted by Carl Linnaeus in 1759. This family consists of more than 60 species. These sponges are often utilized as a cleaning tool and also as an absorbent substance in surgeries.
Complete answer:
Sponges belonging to phylum Porifera are included in the class Demospongiae. These are diploblastic animals without true body cavity. They are also known as bath sponge and moreover, this sea sponge is used for commercial purposes. It can be found all through the Mediterranean Sea. These sponges can reproduce both sexually and asexually. They carry out asexual reproduction through fragmentation or budding. Moreover, these are hermaphrodites and can reproduce sexually via production of sperms and oocytes. Their body skeleton chiefly comprises spongin fibers.
On the other hand, sponges belonging to class Calcarea have calcareous spicules while the sponges belonging to class Hexactinellida consists of siliceous spicules.
However, mesoglea which is also known as mesenchyme, is a matrix formed of protein and gelatin. It serves as an interconnection between the inner and outer layer of the body wall of sponges.
So the correct answer is option “B” that is the body of Euspongia is mainly composed of spongin fibres.
Note: Sponges are generally globular in shape. It is mainly found attached to the substratum in shallow waters. The dried skeleton of these sponges is often used as bath sponge therefore they are also known as bath sponges.
Complete answer:
Sponges belonging to phylum Porifera are included in the class Demospongiae. These are diploblastic animals without true body cavity. They are also known as bath sponge and moreover, this sea sponge is used for commercial purposes. It can be found all through the Mediterranean Sea. These sponges can reproduce both sexually and asexually. They carry out asexual reproduction through fragmentation or budding. Moreover, these are hermaphrodites and can reproduce sexually via production of sperms and oocytes. Their body skeleton chiefly comprises spongin fibers.
On the other hand, sponges belonging to class Calcarea have calcareous spicules while the sponges belonging to class Hexactinellida consists of siliceous spicules.
However, mesoglea which is also known as mesenchyme, is a matrix formed of protein and gelatin. It serves as an interconnection between the inner and outer layer of the body wall of sponges.
So the correct answer is option “B” that is the body of Euspongia is mainly composed of spongin fibres.
Note: Sponges are generally globular in shape. It is mainly found attached to the substratum in shallow waters. The dried skeleton of these sponges is often used as bath sponge therefore they are also known as bath sponges.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
A group of fish is known as class 7 english CBSE
The highest dam in India is A Bhakra dam B Tehri dam class 10 social science CBSE
Write all prime numbers between 80 and 100 class 8 maths CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Onam is the main festival of which state A Karnataka class 7 social science CBSE
Who administers the oath of office to the President class 10 social science CBSE
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE
Kolkata port is situated on the banks of river A Ganga class 9 social science CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE