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11th Standard English Medium Biology (Zoology) Subject Digestion and Absorption Creative 3 Mark Questions with Solution Part - I updated Creative Questions

Published on: 13/05/2022

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Std: 11th Standard - Biology

chapter: - Creative Questions

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Questions:

Generic 3

5 x 3 = 15

What is indigestion?

Why do plants not require a digestive system?

Describe the role of intestinal juice in the digestive process.

What are the functions of the liver other than secretion of bile?

What is the cause for heart burn?

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Answers Key:

Generic 3

5 x 3 = 15

It is a digestive disorder in which the food is not properly digested leading to a feeling of fullness of stomach. It may be due to inadequate enzyme secretion, anxiety, food poisoning, over eating, and spicy food.

Plants are autotrophs. They prepare their own food using CO₂ , H₂Oin the presence of sunlight trapped by the chlorophyll pigment present in the leaves. There is no need of digestive system for plants as they use the starch as such.

The enzymes in the intestinal juice such as maltase, lactase, sucrase (invertase), dipeptidases, lipases, nucleosidases act on the breakdown products of bile and pancreatic digestion.

Maltose	\(\overset {Maltase}{\longrightarrow}\)	glucose + glucose
Sucrose	\(\overset {Sucrase}{\longrightarrow}\)	glucose + fructose
Lactose	\(\overset {Lactase}{\longrightarrow}\)	glucose + galactose
Dipeptides, Tripeptides	\(\overset {Peptidase}{\longrightarrow}\)	amino acids
Nucleotides	\(\overset {Nucleotidase}{\longrightarrow}\)	Nucleoside + Phosphoric acid
Nucleoside	\(\overset {Nucleotidase}{\longrightarrow}\)	Sugar + Nitrogen base
Diglycerides and monoglycerides	\(\overset {Lipases}{\longrightarrow}\)	Fatty acids + glycerol

1. Destroys aging and defective blood cells.
2. Stores glucose in the form of glycogen or disperses glucose into the bloodstream with the help of pancreatic hormones.
3. Stores fat soluble vitamins and iron.
4. Detoxifies toxic substances.

If the cardiac sphincter does not contract properly during the churning action of the stomach the gastric juice with acid may flow back into the oesophagus and cause heart burn, resulting in GERD (Gastro Oesophagus Reflex Disorder).