Elite Science�Grade 7�

With Anitha Raja Ram

Good Morning

Welcome !

My dear girls……………….

Textbook

Note Book

Fully charged laptop

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Pencil, Eraser, Ruler

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04

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Make sure you have the following before we start:

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1. Listen to your teacher. ​
2. Ask questions by raising your hand.​
3. Be prepared to start the lesson by having your resources ready.​
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6. Try your best and be an active learner!​
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"Opportunities don't happen. You create them."

Module 2�Body Systems

Levels of Organization

Lesson 1

Learning Objectives

• Explore and model how the body is a system of interacting subsystems composed of groups of cells.

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• Understand how cells are organized into tissues, organs, and organ systems to work together to carry out specific tasks in multicellular organisms.

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• Engage in arguments to deepen their understanding of these concepts

Vocabulary

• Cell
• Diffuse
• Organism
• Organize
• Oxygen
• Tissue
• Throughout

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• Unicellular
• multicellular

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Starter Activity

Textbook # 8

Activity

Textbook # 9

How are your cells organised to make up your body?

• Scientists estimate there are 37.2 trillion cells in our body.

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• All of those are organized in a way that enables our body to function.

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• Cells are smallest unit of living things that carries on the functions of life.

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Question time

2. All living organisms are composed of………………………..

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1.

Activity - 1

What is an ORGANISM?. Give some examples.

How are cells organised in the body?

How are cells organised in the body?

• Organisms can be unicellular or multicellular.

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• Multicellular organisms have different types of cells that perform specific jobs.

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• In multicellular organisms, similar types of cells are organized into groups.

How are cells organised in the body?

Question time

Multicellular Organism

Activity - 2

When cells get together

(Bone cell, nerve cell, muscle cell, blood cell)

Activity - 2

When cells get together

Answer:

How are cells organised in the body?

• Tissues are group of similar types of cells that work together to carry out specific tasks.

Tissues

How are cells organised in the body?

Animals have four main types of tissues

Tissues

• Muscle tissue
• Connective tissue
• Nervous tissue
• Epithelial tissue

How are cells organised in the body?

Types of Tissues

Muscle tissue

Connective tissue

Cause movement

Provides structure and support and connects other types of tissues

How are cells organised in the body?

Types of Tissues

Nervous tissue

Carries messages to and from the brain.

Epithelial tissue

Forms the protective outer layer of the skin and the internal lining of the body.

Activity – Match the picture

Muscle tissue

Connective tissue

Nervous tissue

Epithelial tissue

Activity – Identify the types of Animal Tissues

Muscle tissue

Connective tissue

Nervous tissue

Epithelial tissue

1.Cause movement –

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2. Provides structure and support� and connects other types of tissues –

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3. Carries messages to and from the brain –

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4. Forms the protective outer �layer of the skin and the internal lining of the body -

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How are cells organised in the body?

Plants have three main types of tissues

Tissues

• Dermal tissue
• Vascular tissue
• Ground tissue

How are cells organised in the body?

Types of Tissues - Plants

Dermal tissue

Provides protection and helps reduce water loss.

Vascular tissue

Transport water and nutrients from one part of a plant to another.

Ground tissue

Provides storage and support and is where photosynthesis takes place

Activity - 3

Answer:

Textbook # 11

Question time

Activity - 4

https://wordwall.net/resource/35204835/levels-of-organization

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How are tissues organised in the body?

Organs

• Complex jobs in organism require more than one type of tissue.

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• Organs are groups of different tissues working together to perform a particular job.

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• For example, stomach is an organ specialized for breaking down food.

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• It is made of all four types of tissues.

• Muscle tissue
• Connective tissue
• Nervous tissue
• Epithelial tissue

How are tissues organised in the body?

Organs - Stomach

Each type of tissue performs a specific function necessary for the stomach to work properly.

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• Layers of muscle tissue contract and break up pieces of food.
• Epithelial tissue lines the stomach.
• Nervous tissue sends signal to indicate the stomach is full.
• Connective tissue supports the stomach wall.

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How are tissues organised in the body?

Organs – plant leaves

Plants also have organs. Leaves are organs specialized for photosynthesis. Each leaf is made of dermal, ground, and vascular tissues.

• Dermal tissue covers the outer surface of a leaf.
• Ground tissue is where photosynthesis takes place.

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• The vascular tissue moves both the food produced by photosynthesis and water throughout the leaf and the rest of the plant.

• The leaf is a vital organ because it contains ground tissue that produce food for the rest of the plant.
• The ground tissue is tightly packed on the top half of a leaf.

How are organs organised in the body?

Organ system

How are organ system organised in the body?

Organism

How are organ system organised in the body?

Organism

Activity - 4

1. Fill in the path of organization from a cell to the organism.

2. How is this organization similar in plant bodies? How is it different?

Activity - 5

Group tasks – How do body function

Activity - 5

Group tasks – How do body function

Question Time

Question Time

Exit Ticket

https://edpuzzle.com/media/612a8b0bb9006341819e60d7

Thank You