In what form excess of glucose is stored in human body?

In the human body, excess glucose is stored in the form of glycogen [1]. When we consume food, the energy derived that is not immediately required for cellular respiration is converted into this complex polysaccharide for later use [1]. Glycogen is primarily synthesized and stored in the liver and muscle tissues. While plants store their excess glucose as starch , humans and other animals utilize glycogen as their primary storage carbohydrate. During the process of respiration, organic compounds like glucose are broken down to provide energy in the form of ATP [3][4]. If blood glucose levels drop, glycogen is hydrolyzed back into glucose to maintain homeostasis. Fructose is a simple sugar found in fruits, and starch is the storage form specific to plants , making glycogen the correct physiological storage form in humans.

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 5: Life Processes > 5.2.1 Autotrophic Nutrition > p. 81
2. [3] Science , class X (NCERT 2025 ed.) > Chapter 5: Life Processes > Activity 5.5 > p. 87
3. [4] Science-Class VII . NCERT(Revised ed 2025) > Chapter 10: Life Processes in Plants > 10.2.3 Photosynthesis: in a nutshell > p. 146