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Which of the following sets of animals are triploblastic, bilaterally symmetrical and hermaphrodite
- a)Pinctada, Pleurobrachia, Ophiura
- b)Pennatula, Doliolium, Chaetopleura
- c)Nereis, Hirudinaria, Pheretima
- d)Pheretima, Planaria, Taenia
Correct answer is option 'D'. Can you explain this answer?
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Which of the following sets of animals are triploblastic, bilaterally ...
Triploblastic means the organism has three germ layers at the time of embryonic development, bilaterally symmetrical means the body can be divided into two similar parts and hermaphrodite means bisexual and the organism in option d have these characteristics.
The common Indian earthworm is Pheretima posthuma. It is triploblastic in nature and they are coelomate. They have external segmentation and they are hermaphrodite.
Planaria (Platyhelminthes) are free-living flatworms that live in freshwater. Planarians have bilateral symmetry with two nerves extending the length of the body, an enlarged "brain" (ganglion cell), and two eye spots.
The main body of Taenia, the strobila, consists of a chain of segments known as proglottids. Each proglottid is a little more than a self-sustainable, very lightly ingestive, reproductive unit; hence, the tapeworm is a hermaphrodite.
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Which of the following sets of animals are triploblastic, bilaterally ...
The correct answer is option 'D' - Pheretima, Planaria, Taenia. Let's break down each criterion to understand why this set of animals fits the description.
1. Triploblastic: Triploblastic animals have three germ layers - ectoderm, mesoderm, and endoderm. These germ layers give rise to different tissues and organs in the body. Pheretima (earthworm), Planaria (flatworm), and Taenia (tapeworm) are all triploblastic animals.
2. Bilaterally symmetrical: Bilateral symmetry means that an animal can be divided into two equal halves along a sagittal plane. The three animals in option 'D' - Pheretima, Planaria, and Taenia - all exhibit bilateral symmetry.
3. Hermaphroditic: Hermaphroditism refers to the condition where an individual organism has both male and female reproductive organs. Pheretima (earthworm) is a hermaphroditic animal, possessing both male and female reproductive systems. Planaria (flatworm) are also hermaphroditic, with each individual possessing both male and female reproductive organs. Taenia (tapeworm) is also hermaphroditic, having both male and female reproductive structures.
To summarize:
- Pheretima (earthworm), Planaria (flatworm), and Taenia (tapeworm) are all triploblastic, bilaterally symmetrical, and hermaphroditic animals.
- Pinctada, Pleurobrachia, and Ophiura (options 'A') are not hermaphroditic.
- Pennatula, Doliolium, and Chaetopleura (options 'B') are not triploblastic.
- Nereis, Hirudinaria, and Pheretima (options 'C') are not hermaphroditic.
In conclusion, option 'D' is the correct answer because Pheretima, Planaria, and Taenia fulfill all the given criteria of being triploblastic, bilaterally symmetrical, and hermaphroditic animals.
1. Triploblastic: Triploblastic animals have three germ layers - ectoderm, mesoderm, and endoderm. These germ layers give rise to different tissues and organs in the body. Pheretima (earthworm), Planaria (flatworm), and Taenia (tapeworm) are all triploblastic animals.
2. Bilaterally symmetrical: Bilateral symmetry means that an animal can be divided into two equal halves along a sagittal plane. The three animals in option 'D' - Pheretima, Planaria, and Taenia - all exhibit bilateral symmetry.
3. Hermaphroditic: Hermaphroditism refers to the condition where an individual organism has both male and female reproductive organs. Pheretima (earthworm) is a hermaphroditic animal, possessing both male and female reproductive systems. Planaria (flatworm) are also hermaphroditic, with each individual possessing both male and female reproductive organs. Taenia (tapeworm) is also hermaphroditic, having both male and female reproductive structures.
To summarize:
- Pheretima (earthworm), Planaria (flatworm), and Taenia (tapeworm) are all triploblastic, bilaterally symmetrical, and hermaphroditic animals.
- Pinctada, Pleurobrachia, and Ophiura (options 'A') are not hermaphroditic.
- Pennatula, Doliolium, and Chaetopleura (options 'B') are not triploblastic.
- Nereis, Hirudinaria, and Pheretima (options 'C') are not hermaphroditic.
In conclusion, option 'D' is the correct answer because Pheretima, Planaria, and Taenia fulfill all the given criteria of being triploblastic, bilaterally symmetrical, and hermaphroditic animals.
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Which of the following sets of animals are triploblastic, bilaterally symmetrical and hermaphroditea)Pinctada, Pleurobrachia, Ophiurab)Pennatula, Doliolium, Chaetopleurac)Nereis, Hirudinaria, Pheretimad)Pheretima, Planaria, TaeniaCorrect answer is option 'D'. Can you explain this answer?
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Which of the following sets of animals are triploblastic, bilaterally symmetrical and hermaphroditea)Pinctada, Pleurobrachia, Ophiurab)Pennatula, Doliolium, Chaetopleurac)Nereis, Hirudinaria, Pheretimad)Pheretima, Planaria, TaeniaCorrect answer is option 'D'. 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 Which of the following sets of animals are triploblastic, bilaterally symmetrical and hermaphroditea)Pinctada, Pleurobrachia, Ophiurab)Pennatula, Doliolium, Chaetopleurac)Nereis, Hirudinaria, Pheretimad)Pheretima, Planaria, TaeniaCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following sets of animals are triploblastic, bilaterally symmetrical and hermaphroditea)Pinctada, Pleurobrachia, Ophiurab)Pennatula, Doliolium, Chaetopleurac)Nereis, Hirudinaria, Pheretimad)Pheretima, Planaria, TaeniaCorrect answer is option 'D'. Can you explain this answer?.
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