Question

Cephalization, the clustering of neurons and interneurons in the anterior part of the animal, is apparent in I) mammals II) cnidarians III) Planaria IV) sea stars _______. A. I and II B. III and IV C. I and III D. II and IV

Answer 1

Option (III) .Cephalization, the clustering of neurons and interneurons in the anterior part of the animal, is apparent in Planaria.

What is planaria?

• Planaria is a genus of planarians in the family Planariidae.
• When an individual is cut into pieces, each piece has the ability to regenerate into a fully formed individual.
• Currently the genus Planaria is defined as freshwater triclads with oviducts that unite to form a common oviduct without embracing the bursa copulatrix and with an adenodactyl present in the male atrium.
• The testes occur along the whole body.
• Planaria originally have habitats in dark, murky water which results in such sensitivity .
• They are also sensitive to other stimuli such as chemical gradients, vibration, magnetic and electric fields .
• Their central nervous system includes the anterior (head, brain and eyes) and middle (abdominal trunk and pharynx).

To know more about planaria, refer:

brainly.com/question/1917416

#SPJ4