Class 7 Science - MP
Life Processes in Animals
The chapter 'Life Processes in Animals' for Class 7 MP Board Science introduces students to the essential biological activities that keep animals alive. It covers the complete journey of nutrition in animals, including ingestion, digestion, absorption, assimilation, and egestion, with a special focus on human digestion and ruminants like cows. Students also learn about respiration, how animals breathe through different organs, and the basics of transport of substances and excretion. This chapter is fundamental for MP Board exams as it builds the base for human physiology and is a frequent source of short-answer and diagram-based questions.
Start Learning FreeKey Concepts
Digestion in Humans
The process of breaking down complex food substances into simpler, soluble forms as it passes through the alimentary canal, aided by digestive juices from glands.
Ruminants
Grass-eating animals like cows and buffaloes that quickly swallow grass, store it in the rumen for partial digestion as cud, and later bring it back to the mouth to chew it thoroughly.
Amoeba Digestion
A single-celled organism that captures food using finger-like projections called pseudopodia and traps it inside a food vacuole to digest it.
Respiration
The process of breaking down food inside cells using oxygen to release energy, which involves breathing in oxygen and breathing out carbon dioxide.
Transportation in Animals
The circulation of oxygen, nutrients, and waste products throughout the body via the circulatory system, which consists of the heart, blood, and blood vessels.
Excretion
The biological process of removing harmful metabolic waste products from the body, primarily carried out by the kidneys in humans.
Important Formulas
Board Exam Info
This chapter typically carries around 6 to 8 marks in the MP Board Class 7 Science annual examination. Common question types include labeling diagrams of the human digestive system, differentiating between human and ruminant digestion, and short-answer questions on breathing organs in different animals like fish, earthworms, and insects.
Frequently Asked Questions
Why do cows chew continuously even when they are not eating grass?
Cows are ruminants that quickly swallow grass and store it in their rumen. Later, this partially digested food (cud) returns to the mouth in small lumps so the cow can chew it thoroughly, a process called rumination.
What are Villi and what is their function?
Villi are tiny, finger-like projections found on the inner walls of the small intestine. They increase the surface area for the absorption of digested food into the blood vessels.
How do single-celled organisms like Amoeba digest food?
Amoeba uses temporary finger-like projections called pseudopodia to engulf food particles, forming a food vacuole where digestive juices are secreted to break down the food.
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