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Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.
Q. The skeleton of sponges are composed of _______ .
  • a)
    spicules
  • b)
    silica
  • c)
    calcium
  • d)
    chitin
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Members of this phylum porifera are commonly known as sponges. They a...
The spicules are made up of calcium carbonate, silica and spongin fibres which together form the endoskeleton of sponges.
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Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer?
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Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Members of this phylum porifera are commonly known as sponges. They are asymmetrical animals. They are primitive multicellular animals with cellular level of organisation. Body wall is two layered -outer dermal layer called pinacoderm and inner gastral layer called choanoderm. Pinacocytes cells are present in the pinacoderm and collar cells or choanocytes are present in the choanoderm. The body possess minute pores called ostia, a large cavity called spongocoel and a pore called osculum. They have a water canal system. Water enters through minute pores called ostia in the spongocoel and from the spongocoel goes out through the osculum. The body is supported by a skeleton. They are hermaphrodite and reproduce by asexual and sexual reproduction.Q. The skeleton of sponges are composed of _______ .a)spiculesb)silicac)calciumd)chitinCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.
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