Home
Class 12
BIOLOGY
Assertion : Tapeworm, roundowrm and pinw...

Assertion : Tapeworm, roundowrm and pinworm are endoparasites of human intestine.
Reason : Improperly cooked food is the source of intestinal infections.

A

If both assertion and reason are true and reason is the correct explaination of assertion

B

If both assertion and reason are true but reason is not correct explaination of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C

Tapeworm belonging to phylum platyhelminthes,pinworms and roundworm belonging to phylum nematoda,are all endoparasires.They all are intestinal parasites.In case of Taenia solium man gets infection by uncrooked or imprperly cooked measly pork.Cysticercus becomes active on reaching the intestine.Proscolex everts or evaginates in the intestinal wall.Ascaris,being an endoparasite inhabits the smal intenstine of man,more frequently of children than of adults.Man gets infection through skin contact.Enterobius vermicularis or pinworm live in caccum,appendix and at the junction of large and small intestine.They are transmitted by the improper sanitary condition.
Promotional Banner

Similar Questions

Explore conceptually related problems

Assertion: Tapeworm, roundworm and pinworm are endoparasites of human intestine. Reason: Improperly cooked food is the source of intestinal infections.

Assertion : Tapeworm, roundworm and pinworm are endoparasites of human intestine. Reason : Improperly cooked food is the source of all intestinal infections.

Assertion : Products of digestion are absorbed in the small intestine. Reason : Large intestine has impermeable wall.

Assertion : Products of digestion are absorbed in the large intestine. Reason: The mucosal lining of large intestine forms finger-like foldings called villi which aid in absorption.

Assertion: The sight, smell and presence of food in the oral cavity can stimulate secetion of saliva. Reason: The activities of the gastro-intestinal tract are only under neutral control for proper coordination of different parts.

Assertion :- Maximum absorption of food occur in small intestine. Reason :- Villi & microvilli abundantly present in small intestine.

Assertion :- Small intestine is very long and has plica circularis & villi Reason : All these increase internal surface area of small intestine for efficient food absorption.

Assertion: Water and electrolytes are almost fully absorbed in the large intestine. Reason: In large intestine, haustral contraction (slow semgmenting movements) roll the forming faeces over and over, causing absorption of water and electrolytes.

Assertion :- Acid which reach intestine does not damage it. Reason :- The mucous along with the bicarbonates from the pancreas protects the intestinal mucosa.

Bacteria living in human large intestine feeding on undigested food without harming the host show :