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Structural Organisation in Animals

CBSE · Class 11 · Biology

Summary of Structural Organisation in Animals for CBSE Class 11 Biology. Key concepts, important points, and chapter overview.

107 questions84 flashcards5 concepts

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Overview

Structural organisation in animals shows how cells, tissues, organs, and organ systems work together to carry out life processes efficiently. In multicellular animals, similar cells with intercellular substances form tissues. Tissues combine to form organs, and organs work together as organ systems.

Key Concepts

A tissue is a group

A tissue is a group of similar cells along with intercellular substances performing a specific function. Complex animals have four basic types of tiss

Frogs belong to class Amphibia

Frogs belong to class Amphibia of phylum Chordata. Rana tigrina is the most common frog species found in India.

Frog skin is smooth

Frog skin is smooth, slippery, and moist due to mucus. The dorsal side is olive green with dark irregular spots, while the ventral side is pale yellow

The frog body has head

The frog body has head and trunk only; neck and tail are absent. Eyes are covered by a nictitating membrane while in water. External ear is absent and

Frog is a carnivore with

Frog is a carnivore with a short alimentary canal. Food is captured by the bilobed tongue. Digestion begins with HCl and gastric juices in the stomach

Learning Objectives

  • Understand the levels of organisation from cells to organ systems
  • Define tissue and recognise its role in multicellular animals
  • Describe the external morphology of frog
  • Explain the major organ systems of frog and their functions
  • Identify the special features of frog circulation, respiration, excretion, nervous system, and reproduction

Frequently Asked Questions

What are the important topics in Structural Organisation in Animals for CBSE Class 11 Biology?
Structural Organisation in Animals covers several key topics that are frequently asked in CBSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Structural Organisation in Animals — CBSE Class 11 Biology?
Understand the core concepts first, then work through the 107 practice questions available for this chapter. Revise formulas and 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 19 chapters — CBSE Class 11 Biology Chapter Summary

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