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Nutrition in Animals — Revision Notes

Gujarat Board · Class 7 · Science

Nutrition in Animals revision notes for Gujarat Board Class 7 Science: 4 topics in quick points. Part of the Gujarat Board Class 7 Science syllabus.

45 questions5 concepts

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A labeled diagram of the human alimentary canal, showing the major organs involved in digestion from mouth to anus, including associated glands.
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Key Topics to Revise

1

Different Ways of Taking Food (Modes of Feeding)

  • Different animals take food in different ways depending on the type of food they eat.
  • Bees and humming-birds use siphoning to suck nectar from flowers.
  • Infants of humans and many animals feed by sucking mother's milk.
2

Human Digestive System – Parts and Functions

  • The alimentary canal is a continuous tube from mouth to anus where food is digested.
  • The digestive system = alimentary canal + associated digestive glands.
  • The parts of the alimentary canal in order are: Buccal cavity → Oesophagus (food pipe) → Stomach → Small intestine → Large intestine → Rectum → Anus.
3

Digestion in the Mouth (Buccal Cavity)

  • The buccal cavity contains teeth, tongue, and salivary glands.
  • Teeth mechanically break food into small pieces – this is physical/mechanical digestion.
  • There are four types of teeth: Incisors (cutting and biting), Canines (piercing and tearing), Premolars (chewing and grinding), Molars (chewing and grinding).
4

Digestion in the Stomach

  • The stomach is a thick-walled, J-shaped bag and is the widest part of the alimentary canal.
  • The inner lining of the stomach secretes three things: mucous, hydrochloric acid (HCl), and digestive juices.
  • Mucous protects the stomach lining from being damaged by its own acid.

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Full Notes

Key Concepts

Nutrition is the process of takingDifferent animals have different waysThe human digestive system consistsHumans have three types of permanentSaliva is secreted by salivary glands

Frequently Asked Questions

What are the important topics in Nutrition in Animals for Gujarat Board Class 7 Science?
Key topics in Nutrition in Animals include Different Ways of Taking Food (Modes of Feeding), Human Digestive System – Parts and Functions, Digestion in the Mouth (Buccal Cavity), Digestion in the Stomach. Study these first, then practise questions on each for Class 7 exams.
How should I revise Nutrition in Animals for Class 7 exams?
Learn the core ideas first, then work through the 45 practice questions on Nutrition in Animals. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All Gujarat Board Class 7 Science Revision Notes

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