Question 91 markMCQSection A

Consider the following statements about small intestine and select the one which is NOT correct:

Life Processes
Nutrition in Human Beings

Options

(a)The length of the small intestine in animals differs as it depends on the type of food they eat.
(b)The small intestine is the site of complete digestion of food.
(c)The small intestine receives secretions from liver and pancreas.
(d)The villi of the small intestine absorb water from the unabsorbed food before it gets removed from the body via the anus.

Official answer

d

Answer keywords:large intestinewater absorptionvillismall intestineunabsorbed food

Marking scheme

  1. 1.1 mark for selecting the incorrect statement, which is option (d).

Hint

Recall which part of the alimentary canal is responsible for absorbing water from the unabsorbed waste material before it is excreted.

Quick oral answer

The large intestine is responsible for absorbing water from unabsorbed food, while the small intestine is responsible for complete digestion and nutrient absorption.

Common mistakes

  1. 1.Students often mistakenly believe that all absorption (including water from waste) occurs in the small intestine due to the presence of villi. Water absorption from undigested waste is primarily a function of the large intestine.

Analysis and explanation

The correct option is (d) because the statement is incorrect. The absorption of water from unabsorbed food is the function of the walls of the large intestine, not the villi of the small intestine. The villi in the small intestine are specialized for absorbing digested nutrients (like glucose, amino acids, fatty acids, and glycerol).


  • Option (a) is a correct statement: Herbivores have a longer small intestine to digest cellulose, while carnivores have a shorter one because meat is easier to digest.
  • Option (b) is a correct statement: The small intestine is indeed the site of complete digestion of carbohydrates, proteins, and fats.
  • Option (c) is a correct statement: The small intestine receives bile juice from the liver and pancreatic juice from the pancreas to facilitate digestion.

Interesting facts

The human small intestine is about 6 meters (20 feet) long, making it the longest part of the digestive system, tightly coiled to fit inside the abdomen.

Question details

Q9 of 39 questions

Board
CBSE
Class
Class 10
Subject
Science
Year
2023
Section
Section A
Marks
1
Type
MCQ
Chapter
Life Processes
Topic
Nutrition in Human Beings
Bloom's level
Understanding
Syllabus topic
Human Alimentary Canal - Small Intestine and Large Intestine functions

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Frequently asked questions

How many marks does this question carry in CBSE Class 10 Science 2023?

This question carries 1 mark in the CBSE Class 10 Science 2023 examination.

Which chapter does this question come from in Science?

This question is from the chapter "Life Processes" in the CBSE Class 10 Science syllabus.

What topic does this question cover in Science?

This question covers the topic "Nutrition in Human Beings" from CBSE Class 10 Science.

What type of question is this in the CBSE Class 10 Science 2023 paper?

This is a MCQ question from Section A in the CBSE Class 10 Science 2023 paper.