What are the adaptations of an ascaris?

Answer 1

Sucker mouth, no internal transport, need a host for survival.

• Its body is long and narrow for easy accommodation in the intestine of the

host.

• Since it feeds upon the chyme of the host, it possesses gustatory receptors concentrated upon the lips around the mouth.
• Its cuticle is structurally and chemically well-adapted for protection against injurious effects of the chyme of the host.
• The muscle cells of its body wall contract against the pressure of pseudocoelomic fluid to bring about undulations of body that counteract the force of peristalsis of host intestine. Thus, the pseudocoelomic fluid is adapted to act as a hydrostatic skeleton.
• Digestive system is simple, because almost predigested nutrients are available to the worms in the chyme of the host.
• The pharynx is adapted as a sucking and pumping organ to suck in the chyme and pump it into the intestine.
• There are no special organs for locomotion and respiration. Respiration is mostly anaerobic.
• Nervous system and sensory organs are relatively simplified.

Answer 2

Ascaris have a tough outer covering to protect them from harsh environments and enable them to survive outside a host. They have a specialized mouthpart for feeding on nutrients in the host's intestines. Additionally, they have a unique lifecycle that involves migrating through different host tissues to ensure their survival and reproduction.