NCERT Solutions for Class 11 Biology Chapter 7 : Structural Organisation in Animals

NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals are provided in the article below. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students appearing for CBSE Class 11 Exam 2022-23. The important topics that are included in this chapter are:

Structural organisation in Earthworm
Structure organisation in Cockroach
Structure organisation in Frogs
Unicellular organisms
Multicellular creatures

Expected no. of Questions: 1-2 questions of around 3 marks.

Download PDF: NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals

NCERT Solutions for Class 11 Biology Chapter 7

Class 11 Biology Chapter 7 Structural Organisation in Animals: Important Topics

The structural organisation in animals or in any other living things is all same at the fundamental level, which means, all life living on earth is made up of cells. And when cells get together, they form tissues, which in turn, form organs and organ systems. So, the structural organisation in animals begins with the smallest fundamental unit – the cell. And a group of cells that perform a similar function forms tissues. When tissues group together to perform specific functions, they form organs.

Cells → Tissues → Organs → Organ systems

Unicellular Organisms

Single cells are known as unicellular organisms. All the life processes including digestion, excretion, and respiration in a unicellular organism, occur within a single cell. These cannot be seen by naked eyes and are therefore called microorganisms. Some of the examples of unicellular organisms such as bacteria, protozoa, algae, fungi, etc.

There are two types of unicellular organisms:

Prokaryotes: These are unicellular organisms without a true nucleus, and very small in size from 0.1 to 5.0 µm. This facilitates the diffusion of ions and molecules to different parts of the cell.
Eukaryotes: These are larger than prokaryotes, with a membrane-bound nucleus, and the DNA is present in the nucleus of the cell. Eukaryotes can be plant cells or animal cells.

Multicellular Organisms

In multicellular animals, a group of similar cells along with intercellular substances perform a specific function. Such an organization is called tissue. These tissues are organized in specific proportions and patterns to form an organ like the stomach, lung, heart, and kidney for the designed structure of a human body or any complex life form.

Following are the examples of multicellular organisms:

Humans
Dogs
Cows
Cats
Chicken
Trees
Horse

Chapter Related Links:

Animal Tissues	Organ and organ system	Invertebrates
Difference Between Ligaments and Tendons	Skin Diagram & Detailed Illustration	Vermiculture
Glandular Epithelium	Cockroach Life Cycle	Animal Tissue Types

CBSE Class 11 Biology Study Guides:

CBSE Class 11 Biology Syllabus	CBSE Class 11 Biology NCERT Textbook	CBSE Class 11 Biology Sample Paper
Biology Study Material	Biology MCQs	Difference between in Biology

CBSE CLASS XII Related Questions

1.
Work out the crosses between:
Normal female and Haemophilic male
Carrier female and Normal male
(III) Carrier female and Haemophilic male
Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease.
(Use: $X$ - Normal, $X^h$ - Haemophilic)
View Solution
2.
What is the carrying capacity of a species in a habitat?
Explain the growth curve that takes this capacity into account.
View Solution
3.
Read the following passage and answer the questions that follow:
The data below shows the concentration of nicotine smoked by a smoker taking 10puffs/minute.
4.
Draw a labelled two-celled structure of male gametophyte of an angiosperm.
Name the three layers that surround the cytoplasm of a male gametophyte starting from innermost to outermost layer.
(iii) Which organic material makes the outermost layer? Mention its advantage.
(iv) Why is the outermost layer of male gametophyte not continuous ?
View Solution
5.
Oogenesis is a discontinuous process that begins before birth and is completed after puberty.
Trace the development of a gamete mother cell till its release from the ovary during ovulation.
Name the two pituitary hormones that play an important role in the process.
View Solution
6.
Cow dung and water are mixed and fed into a biogas plant to allow digestion of biowastes. The person performing this process says that there is no need to provide an inoculum.
Do you agree with him? Justify your answer.
What happens to the biowaste inside the digester ?
(c) Name the useful by-products obtained from this process and mention how they are used.
View Solution

View All

Similar Biology Concepts

Contractile Vacuole: Definition, Functions and Structure

Structural Organisation In Animals: Tissues & Morphology

Reproductive System Of Earthworm: Explanation

Structure and Functions of Skin: Camouflage, Regulation of Temperature

Tight Junctions: Structure, Functions & Solved Questions

Cartilage: Structure, Types & Functions

Levels of Organisation: Meaning, Explanation & Sample Questions

Bone Marrow: Types, Functions, Diseases & Transplant

CBSE CLASS XII Previous Year Papers

Biology

Biology Preparation Guides

Tissue Culture: Types, Process, Importance, Culture Medium, Uses and Weightage

Cell Division: Definition, and Different Phases of Cell Cycle

Pituitary Gland: Anatomy, Functions, Hormones, Disorders

Nervous System: Definition, Types and Sample Questions

Amino Acids: Properties, Structure, Sources and Function

Paralysis Symptoms: Types, Symptoms, Causes and Treatment

Goiter: Definition, Causes, Symptoms, Diagnosis & Treatment

Insectivorous Plants: Definition, Characteristics, Types of Traps

Sleeping Sickness: Meaning, Cause, Symptoms, Prevention

Thyroid Gland: Hormones, Functions, Disorders & Treatment

Gastric: Meaning, Causes,Symptoms & Diagnosis

Endocrine Glands: Endocrine System, Functions and Hormones

Vitamin B: Types, Sources & Symptoms of Vitamin B Deficiency

Mitosis: Definition, Features, Stages and Importance

Difference between Photosynthesis and Respiration: Definition and Chemical Reactions

Blood Coagulation: Definition, Process and Sample Questions

Difference Between Ligaments and Tendons

Phospholipid: Function, Types and Properties

Luteinizing Hormone: Meaning, Functions, Disorders & LH Test

Thyroid Cancer: Types, Symptoms and Causes, Diagnosis, Treatment

Biology NCERT Solutions

Estrogen Hormone: Function, Synthesis, and Hormonal Levels

Human Body: Anatomy and Physiology

Characteristics and Classification of Monera

Cyclic Photophosphorylation: Explanation

Lung Diseases: Types, Causes, Symptoms & Prevention

Difference between Frog and Toad: Major Differences and Tadpoles

Difference Between Moth and Butterfly: Facts and Similarities

Bones: Definition, Types and Composition

Species: Definition, Types and Examples

Multicellular Organisms: Evolution, Characteristics, Theories, Examples

You can also check

NCERT Solutions for Class 11 Biology Chapter 7 : Structural Organisation in Animals

NCERT Solutions for Class 11 Biology Chapter 7

Class 11 Biology Chapter 7 Structural Organisation in Animals: Important Topics

Unicellular Organisms

Multicellular Organisms

CBSE CLASS XII Related Questions

1.
Work out the crosses between:
Normal female and Haemophilic male
Carrier female and Normal male
(III) Carrier female and Haemophilic male
Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease.
(Use: $X$ - Normal, $X^h$ - Haemophilic)

2.
What is the carrying capacity of a species in a habitat?
Explain the growth curve that takes this capacity into account.

3.
Read the following passage and answer the questions that follow:
The data below shows the concentration of nicotine smoked by a smoker taking 10puffs/minute.

5.
Oogenesis is a discontinuous process that begins before birth and is completed after puberty.
Trace the development of a gamete mother cell till its release from the ovary during ovulation.
Name the two pituitary hormones that play an important role in the process.

Similar Biology Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

NCERT Solutions for Class 11 Biology Chapter 7 : Structural Organisation in Animals

NCERT Solutions for Class 11 Biology Chapter 7

Class 11 Biology Chapter 7 Structural Organisation in Animals: Important Topics

Unicellular Organisms

Multicellular Organisms

CBSE CLASS XII Related Questions

1.Work out the crosses between: Normal female and Haemophilic male Carrier female and Normal male (III) Carrier female and Haemophilic male Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease. (Use: $X$ - Normal, $X^h$ - Haemophilic)

2.What is the carrying capacity of a species in a habitat? Explain the growth curve that takes this capacity into account.

3.Read the following passage and answer the questions that follow: The data below shows the concentration of nicotine smoked by a smoker taking 10puffs/minute.

5.Oogenesis is a discontinuous process that begins before birth and is completed after puberty. Trace the development of a gamete mother cell till its release from the ovary during ovulation. Name the two pituitary hormones that play an important role in the process.

Similar Biology Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Work out the crosses between:
Normal female and Haemophilic male
Carrier female and Normal male
(III) Carrier female and Haemophilic male
Write the conclusions you draw from these crosses. Comment on the type of inheritance of the disease.
(Use: $X$ - Normal, $X^h$ - Haemophilic)

2.
What is the carrying capacity of a species in a habitat?
Explain the growth curve that takes this capacity into account.

3.
Read the following passage and answer the questions that follow:
The data below shows the concentration of nicotine smoked by a smoker taking 10puffs/minute.

5.
Oogenesis is a discontinuous process that begins before birth and is completed after puberty.
Trace the development of a gamete mother cell till its release from the ovary during ovulation.
Name the two pituitary hormones that play an important role in the process.