Home
Class 11
BIOLOGY
Assertion: Digestion is chiefly extracel...

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

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:
d

Digestive tract in Ctenophores consists of mouth, pharynx or stomodaeum, stomach or infundibulum, anal canals and two anal pores. Since there are mouth and anal pores present, the digestive tract is complete. The digestion in Ctenophores is both extracellular and intracellular.
Promotional Banner

Similar Questions

Explore conceptually related problems

Distinguish between intracellular and extracellular digestion?

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

The lymphoid tissue, located within the lining of digestive tract is

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 (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: Stimulation of renin secretion will increase the volume of the extracellular fluid (ECF). Reason: The increased ECF occurs due to decreased active reabsorption of Na^(+)

Assertion: Spices are staple food. Reason: Spices are easily digestible calories rich food.

Assertion : Opioids help to enhance respiratory activity. Reason : Opioids are the drugs which binds to specific opioid receptors present in respiratory tract.

Assertion: Bile is not a true digestive juice Reason: Bile lacks digestive enzymes.