Home
Class 11
BIOLOGY
Assertion :Digested and semi-digested fo...

Assertion :Digested and semi-digested food is absorbed by body surface in tapeworms.
Reason: Digestive organs are absent in tapeworms.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation 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:
a
The tapeworm does not have alimentary canal because it is an endoparasite. The digested food of the host is diffused directly through the general body surface.
Promotional Banner

Similar Questions

Explore conceptually related problems

In frog, the partially digested food is called____

Assertion: Digestion is chiefly extracellular in Ctenophores. Reason:In Ctenophores, digestive tract is incomplete.

How does butter in your food gets digested and absorbed in the body?

Assertion (A): Rice is the stape food for most of the people in the world. Reason(R): It is easily digestible and calorie rich food.

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 secretions of digestive glands help in digestion of food in the alimentary canal. Reason : Teeth are hard bone - like structures used to cut, tear and grind food materials.

How is the small intestine designed to absorb digested food ?

Assertion : Heavy metals and persistent pesticides pass into the food chain and increase in amount per unit weight of the organism at successive trophic levels. Reason : Heavy metals and persistent pesticides can be easily metabolised by the organism's body.

Assertion : The primary germ layers are formed during gastrulation. Reason: The body organs are formed from primary germ layers.

Assertion : Mucous membrane immobilises the micro-organisms in the body. Reason : Microoganisms and dust particles entering the respiratory tract are trapped in the mucus.