Flame cells are the excretory structures for which of the following?
Correct answer: D. Platyhelminthes
- A. Annelida
- B. Coelenterates
- C. Echinodermata
- D. Platyhelminthes
Explanation
Flame cell/solenocytes are the main excretory structures of Platyhelminthes.OPTION A: Nephridia are the excretory organs in annelids.OPTION B: The members of Coelenterata are aquatic, so they excrete the body waste directly through the body surface. They lack different organ systems like excretory, digestive, and others.OPTION C: Excretion in echinoderms is by simple diffusion of metabolic wastes (ammonia) across thin permeable regions of the body wall.OPTION D: Flame cell/solenocytes are the main excretory structures of Platyhelminthes.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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