Q. 5 - Biology

Question

Which of the following statements is untrue?

 a. Roughage takes a long time to digest.

 b. Birds eat large quantities at one time so that they can fly long distances. 

c. Cows do not have upper teeth.

 d. In pseudo-ruminants, roughage is digested in the cecum

Step-by-Step Solution

Answer

Option b is correct.

Step 1. Introduction

The digestive process includes six major activities such as ingestion, propulsion, digestion (mechanical and chemical), absorption, and elimination. 

Step 2. The explanation of the correct option.

Option b is an incorrect statement as birds eat very less and store excessive food in their crops which are situated after the esophagus.

Step 3. The explanation of the incorrect option.

Option a is incorrect because roughage takes a long time to digest in ruminants in their four-chambered stomach while it is undigestable in humans.

Option c is incorrect as cows do not have upper teeth instead they have a hard dental pad or palate for chewing grass.

Option d is incorrect as in psuedo-ruminant animals like horses and rabbits they have enlarged caecum and large intestine for the digestion of roughage.