Which of the following characteristic belongs to acoelomates?
Correct answer: D. Solid body without a cavity surrounding internal organs
- A. Absence of mesoderm
- B. Absence of brain
- C. Coelom that is incompletely lined with a mesoderm
- D. Solid body without a cavity surrounding internal organs
Explanation
This is the correct characteristic of acoelomates. Acoelomates are organisms with a solid body plan, meaning they lack a fluid-filled body cavity like a coelom that surrounds their internal organs. Instead, the space between the outer body wall and the internal organs is filled with mesodermal tissue, which is often densely packed, giving them a solid appearance.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Kingdom Animalia questions
Which of the following is not a characterstics feature of tapeworm?
Polymorphism is a characteristic feature of:
During development, in an animal, the mesoderm layer gives rise to:
The venous flower basket is also known as which of the following?
The option that CORRECTLY identifies the class, type of coelom and organisation of germinal layers in leech is
The characteristic of prototherians that provides an evidence of evolution of mammals from reptiles is that they have I