Nutrition in animals class 7 worksheet - PDF

Unlock the secrets of how animals get their nutrients with our comprehensive range of educational materials. If you're a student, parent, or educator focused on Class 7 science, then our Nutrition in Animals Class 7 Worksheet is a must-have tool for effective learning. The worksheet is an excellent resource that combines critical thinking with factual knowledge, available conveniently in a PDF format as Nutrition in Animals for Class 7 Worksheet with Answers PDF. Not just worksheets, we also offer in-depth Nutrition in Animals Class 7 Notes, Questions and Answers, making the learning experience even more enriching. nutrition in animals notes can be downloded from our notes section which includes mind map, mcqs and extra questions answer

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nutrition in animals class 7

Introduction

Understanding how animals get their nutrients is a fascinating topic. Animals source their food either directly from plants or by consuming other animals that eat plants. Sometimes, they eat both. Just like humans, animals need food for growth, body repair, and overall well-being. The whole process of how animals take in nutrients and use them is called animal nutrition.

The Process of Nutrition and its Examples

Animals have developed different ways to break down food and extract nutrients. The main parts involved are the alimentary canal, a long tube-like structure, and the digestive glands, which release enzymes for breaking down food. The stages of digestion include Ingestion (taking in food), Digestion (breaking it down), Absorption (moving nutrients into the bloodstream), Assimilation (cells using the nutrients), and Egestion (removing what's not needed).

Nutrition - Ways of Taking in Food

Different animals have unique methods of obtaining food. For example, frogs use their tongues to catch insects, while bees suck nectar from flowers. The way an animal takes in food and uses it is called its mode of nutrition.

Digestion in Human Beings

In humans, digestion happens in a special tube called the alimentary canal. Food gets broken down into simpler substances like glucose and amino acids. The alimentary canal has different parts like the mouth, stomach, and intestines, each playing a specific role in digestion.

Passage of Food in the Alimentary Canal

The process starts in the mouth where food is chewed and mixed with saliva. It then moves down the esophagus to the stomach, where it mixes with stomach acids. Finally, it goes through the small intestine where digestive juices from the pancreas and liver break it down further for absorption by tiny finger-like structures called villi.

Digestion in Grass-eating Animals

Animals like cows quickly swallow grass and store it in a part of their stomach called the rumen. They later bring it back up to chew it more thoroughly, a process called rumination.

Feeding and Digestion in Amoeba

Amoeba is a single-celled organism that doesn't have a set shape or a formal digestive system. It engulfs food with finger-like extensions and breaks it down within special compartments called food vacuoles.

Small Intestine

This is a narrow, coiled tube divided into three main regions: duodenum, jejunum, and ileum. Most digestion happens here, facilitated by finger-like projections called villi that help absorb nutrients.

Understanding animal nutrition gives us a window into the diverse and amazing ways that different creatures sustain themselves. Whether it's the complex digestive system of a cow or the simple methods of an amoeba, the journey of food from ingestion to egestion is a fascinating process.

What is Lumen

The term "lumen" refers to the inside space of a tubular structure in the body, like an artery or the intestine. In the context of digestion, the lumen is the inner open space of the alimentary canal where the food travels and gets digested. Digestive juices and enzymes are secreted into the lumen to break down the food into simpler substances.

When food enters the alimentary canal, it interacts with various enzymes and digestive juices within the lumen. These substances help in breaking down complex food items like carbohydrates, proteins, and fats into simpler, absorbable forms. The lumen's main function is to provide a pathway for the food as well as a site for its digestion and nutrient absorption.

In conclusion, learning about nutrition in animals is a crucial part of class 7 science curricula. The nutrition in animals class 7 notes questions and answers provide a comprehensive way to understand how various animals, including humans, digest and absorb food for energy and growth. These notes are perfect guides for both teachers and students who are aiming for a better grasp of the subject. To enhance your understanding further, the nutrition in animals diagram visually represents the digestive system, breaking down complex ideas into easy-to-understand illustrations.

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If you're a student aiming to perfect your understanding or a teacher looking for additional materials, there are also nutrition in animals extra questions that cover less commonly discussed topics. Lastly, the worksheet on nutrition in animals class 7 serves as an excellent review tool for both teachers and students. Whether it's understanding the digestive system or learning the types of nutrition, these resources offer a holistic educational experience.