Question

Proglottids of tapeworm proliferate from
(a)From the head or scolex
(b)From a special region of proliferation
(c)Anywhere from the body
(d)From the neck

Answer 1

Hint: Proglottids of tapeworm proliferate from a small, narrow, thin, and unsegmented region in the body of tapeworm. It is present behind the head region.

Complete answer:
Proglottids of tapeworm proliferate from the neck region of tapeworm. It is present behind the scolex. It is a thin, small, narrow, and unsegmented region. It grows continuously and proliferates proglottids by transverse fission or asexual budding, in other words, Proglottids are produced from the neck by mitotic growth, which is followed by transverse constriction. Therefore, this region is known variously as the growth zone, the area of proliferation or budding zone, etc. The body of an adult tapeworm has a scolex or head, a short neck, and a strobila or segmented body formed of proglottids. Scolex has hooks, suckers, or both which help the Tapeworms to anchor themselves to the inside of the intestine of their host. They have no mouth, but can directly absorb nutrients from the gut of the host. The neck continually produces proglottids, each one contains a reproductive tract. Mature proglottids are full of eggs and fall off to leave the host. All tapeworms are hermaphrodites, with each individual having both male and female reproductive organs.

Additional Information:
-Several species of Tapeworms infect human beings when they eat uncooked meats like pork, beef, fish, etc or they eat food in unhygienic conditions.
-Most of the Tapeworms are parasitic, many of them have complex life histories, including a stage in the main host in which the adults grow and reproduce, and one or two intermediate stages in which the larvae develop in other hosts.
-Usually, the adults live in the digestive tracts of vertebrates, while the larvae live in the bodies of other animals, either vertebrates or invertebrates.

So, the correct answer is 'From the neck'.

Note:
-Most tapeworms have a two-phase lifecycle with two types of host.
-Tapeworms are usually treated with medicine taken by mouth.
-Pieces of the tapeworm Proglottids break off and come out of the body in feces.