Innovative Lesson Plan

Structure & Working Of Stomata

Villus Structure

The lining of the small intestine are covered in villi, which are adaptive for effective diffusion. Villi help in increasing the surface area of the small intestine for absorption of nutrients. They have a large surface area, good blood supply to keep up the concentration gradient and short diffusion distances. 

• Epithelium:Only one cell think so that there is a short distance for diffusion 
• Globlet cell: Produces mucus 
• Network of capillaries: supply blood to keep up the concentration gradient of blood for diffusion to take place 
• Lacteal: Carries away the nutrients

Levels Of Organisation

Involuntary Muscles

How Humans Are Able to Move In Ways We Don’t Even Realize, Muscles Make Our Bodies Work............

Every move you make depends on muscles, even when these movements go unnoticed.There are two types of muscles in your body, involuntary and voluntary muscles. Without muscles or oxygen, you wouldn’t be able to move. Involuntary muscles work automatically. They are muscles like the ones around your heart and guts. Voluntary, or skeletal, muscles are muscles you control like those in your arms and legs.
    Muscles are bundles of fiber that can tense and relax. They make up 40 percent of your body weight. They need oxygen in order to burn sugar. Most muscles come in pairs. These work by getting shorter, pulling two points together, then relaxing. The flexor is used to bend or flex a joint and the extensor is used to straighten the joint again.
    Most skeletal muscles are made of thin strands called myofibrils. On the sides of the myofibrils are stripes called striations. Striations are two alternating substances called myosin and actin. When the actin and myosin pull together, they can shorten the muscle by half. Smooth muscles contract blood vessels to control the blood flow through the guts. That is how food is transferred from your mouth to your stomach.
    There are also red and white muscles. These muscles allow you to make movements. The slow-twitch muscle is red. It is good for gentle movements.  White muscles are for fast and powerful movements, like sprinting. Fast-twitch muscles are red and can do fast or slow movements.
    Without your muscles, you wouldn’t be able to see, walk, talk, or even run. Muscles are what make it possible for you to do the things you do.

STRUCTURE OF LENTICELS

STRUCTURE OF STOMATA

PLANT TISSUES

DOUBLE CIRCULATION

GLOBAL WARMING

INTRODUCTION

Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth's climate.The sun sends out energy as heat and light. This energy comes to our earth during the day time.

Some of the sun’s rays get ‘trapped’ in the atmosphere.

Some of them get reflected back into space.

The ones which get through the atmosphere warm the earth up. 

CONTENT

All the time, the earth radiates heat into space, which cools it down. We only really notice this at night, when there is no heating from the sun.

Some of the heat going out is trapped by the atmosphere. This is what makes our planet warm enough to live on.

But if too much heat is trapped, our planet will warm up and the climate will change.

• How do humans increase carbon dioxide levels in the atmosphere?

Burning fossil fuels releases the carbon dioxide stored millions of years ago. Most of the increased carbon dioxide comes from fossil fuels, 

Deforestation releases the carbon stored in trees. Less trees also means less carbon dioxide can be removed from the atmosphere.

Methane is produced when bacteria rot organic matter, Methane is also released when fossil fuels are extracted, The amount of methane in the atmosphere has increased by two and a half times since the Industrial Revolution.

CONCLUSION

Because greenhouse gas emissions are tied very closely to our energy consumption, using less fossil fuel based energy puts fewer greenhouse gases into the atmosphere.

We humans are thought to be the main cause of global warming and climate change……..

but we still have the chance to do something about it by relying on   alternatives fuels or green energy thus reducing the emission of green house gases & saving our planet.