Tapeworms obtain their food from

What are the peculiar features that you find in parasitic platyhelminthes?

Mostly hermaphrodite animals are present in

Which of the following phyla is the first to exhibit organ-level organization?

Consider the following characters $:-$
$1.$ Bilateral symmetry
$2.$ Acoelomate
$3.$ Incomplete digestive system
$4.$ Mostly endoparasites
Select the correct group of phylum with its corresponding animal for the above-given characters $:-$

In which of the following organisms is self-fertilization seen?