Question

Acoelomate animal with protandrous nature is
(a)Ascaris
(b)Schistosoma
(c)Taenia
(d)Megascolex

Answer 1

Hint: This is a genus of tapeworms that includes mainly some important parasites of livestock. Members of the genus are responsible for the disease cysticercosis in humans, which is a type of helminthiasis.

Complete answer:
Taenia is the species of acoelomate, which means they have no body cavity. The protandrous condition is observed in Taenia where the male reproductive organs are formed before the development of female reproductive organs.

Additional Information: -Taeniasis is an infection seen in the intestines of animals, caused by adult tapeworms, which belongs to the genus Taenia. There are generally no or only mild symptoms. Symptoms may occasionally include weight loss or abdominal pain. Segments of tapeworm may be seen in the stool. Complications of pork tapeworm may include cysticercosis.
-Tapeworms can cause digestive problems which include abdominal pain, loss of appetite, weight loss, and upset stomach. The most common symptom of taeniasis seen is the active passing of proglottids (tapeworm segments) through the anus and in the feces.
-Diagnosis of Taenia tapeworm infections is done by analyzing the stool samples; individuals should also be asked if they have passed tapeworm segments. Stool specimens should be collected continuously on 3 different days and examined in the lab for Taenia eggs using a microscope.
So, the correct answer is, ‘Taenia.’

Note: Both protogynous and protandrous hermaphroditism allow the organism to change between functional male and functional female. A flower is said to be protogynous if its function is first female, then male, and protandrous if its function is male then female.