Question

Which among the following characteristics belong to phylum Porifera?

• A. They are endo parasites
• B. Possess collar cells
• C. Body is covered with cuticle
• D. Simplest body plan

Answer 1

Answer: (B), (D)

The correct options are
B Possess collar cells
D Simplest body plan

Phylum Porifera includes organisms which bear pores throughout their body. Poriferans are multicellular organisms with simple body plan and they posses special cells called collar cells.
Platyhelminthes include organisms that are endoparasites i.e. which live as parasites within the body of host and derive nourishment. Body of animals belonging to phylum Aschelminthes is non-segmented and is covered by tough cuticle.