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Easwari S.V.PNatural science181/13376011

POWER POINT PRESENTATIONPOWER POINT PRESENTATION

PowerPoint (© Microsoft Corp.) is a widely used presentation programme that originated in the world of business but has now become commonplace in the world of educational technology.

it is a valuable aid to presentation providing that its use has been carefully considered in terms of pedagogy

Appropriate use of PowerPoint can enhance the teaching and learning experience for both teachers and students.

A presentation can appeal to a number of different learning styles and be made more stimulating.

Teachers are encouraged to incorporate more sophisticated visual and auditory media into presentations

INTRODUCTION

•Chloroplast are green,discoid,self-propagating bodies in the cytoplasm of plant cells•They ae green plastids.•They are concerned with photosynthesis.•Chloroplast contains chlorophyll,carotenoids,DNA ,RNA,Lipids.

Within a leaf, chloroplasts are mainly found in the mesophyll layers of a leaf

They are often absent from the epidermis of a leaf

 All green parts of a plant contain chloroplasts

Chloroplast is a double membraned structure.

Of which the inner membrane is less permeable than the outer membrane.

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The space inside the chloroplast is called the STROMA.

Membranous sacs inside the stroma are the THYLAKOIDS.

Thylakoids are arranged in stacks called as the GRANA.

Thylakoids contain the chlorophyll pigments. Stroma contains the enzymes required for the synthesis of carbohydrates and proteins

A pigment called chlorophyll chloroplastabsorb

SunlightSunlight

Chlorophyll absorb mainly blue and red rays of the visible light .since the green light is not absorbed at all ,it is reflected making the leaves appear green

Chorophyll  photosynthetic parts of a plant green

make

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