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Photosynthesis Diagrams Worksheet Answer Key Part 1

An example of photosynthesis is how plants convert sugar and energy from water, air and sunlight into energy to grow.

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of tissue in a leaf where most photosynthesis takes place

Obtain a slide of leaf epidermis. The lower epidermis has been stripped from a leaf, mounted on a slide, and then stained. Note the large clear epidermal cells. They have not been sectioned. By focusing up and down, the three-dimensional structure of the cells and how they interlock can be seen. The guard cells look rather banana-shaped in surface view. Because of their chloroplasts, they stain more darkly than the epidermal cells. The guard cells surround the stomates, small openings through which gas exchange occurs. Four modified epidermal cells, called supporting cells, surround the guard cells. Draw a diagram of the epidermis and label stomates, guard cells, and epidermal cells.

Illuminating Photosynthesis Photosynthesis diagrams worksheet answer key part ..

In the space below, make a diagram of a cross section of the leaf and label cuticle, upper epidermis, chloroplasts in cells of the mesophyll, air spaces, xylem, phloem, guard cells surrounding a stomate, lower epidermis.

photosynthesis diagram | BetterLesson

Introduction Photosynthesis occurs only in the presence of light, and takes place in the chloroplasts of green plant cells....

Chlorophyll, the photosynthetic pigment in chloroplasts, absorbs light energy. Plants appear green because chlorophyll does not absorb light in the yellow-green region of the visible spectrum. Yellow and green wavelengths of the spectrum are reflected or transmitted depending on the thickness of a leaf. Chlorophyll absorbs light in the blue and red regions of the spectrum. The energy absorbed by chlorophyll raises the energy level of electrons in the active center of the chlorophyll molecule. In the chloroplast, the movement of these high-energy electrons is coordinated with the formation of the high-energy molecule, ATP, and the electron carrier, NADPH. During this process, water molecules are split and oxygen gas is released. This is origin of the oxygen in the air we breathe.

The process of photosynthesis is a complex series of chemical reactions that begins with carbon dioxide and water (molecules of low potential energy) and ends with carbohydrates such as glucose and starch (molecules of high potential energy). The metabolic activity of plants enables the radiant energy of sunlight to be transduced (converted) to the energy found in the chemical bonds of carbohydrates.

I prefer the photosynthesis diagram because it shows the ..

Photosynthesis occurs only in the presence of light and takes place in the chloroplasts of green  cells.

The process of photosynthesis transduces (converts) the kinetic energy of sunlight into the potential energy of chemical bonds. The energy is initially trapped in ATP molecules, later incorporated into the bonds of glucose, and eventually stored as carbohydrates—sugar or starch. Because this laboaratory exercise is about the Kingdom Plantae, the process of photosynthesis will be examined as it is carried out in the chloroplasts of plant cells.

Prediction : I predict that as I increase the distance between the light source and the Canadian Pondweed (reducing the light intensity), the volume of oxygen produced within the time limit (the measure of the rate of photosynthesis) will decrease.

Cross Section of a Leaf Diagram | TutorVista
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It is where photosynthesis takes place

The definition of photosynthesis is the process through which plants use water and carbon dioxide to create their food, grow and release excess oxygen into the air.

Mesophyll spongy & palisade site of photosynthesis

Heterotrophic organisms such as fungi and bacteria obtain the energy they need for growth, reproduction, and movement by decomposing other organisms or molecules. Members of the Kingdom Plantae, together with some members of the Kingdom Protista and all of the cyanobacteria (Domain Bacteria), are photosynthetic organisms; as such, they are autotrophs: they synthesize their own food by using simple raw materials plus the energy of sunlight. They are responsible for renewing the energy supplies available on the Earth. Coal, gasoline, and heating oil fuel our society. These sources of energy are largely derived from the metabolic activity of plants that lived millions of years ago. Members of the Kingdom Animalia, heterotrophic organisms including ourselves, obtain energy from the food they eat. In addition, the process of photosynthesis is the source of oxygen required for the respiration of both plants and animals.

Let's Learn Photosynthesis: Leaf Anatomy ..

Some plants and plantlike organisms have developed other pigments to compensate for low light or poor use of light. Cyanobacteria and red algae have phycocyanin and allophycocyanin as accessory pigments to absorbe orange light. They also have a red pigment called phycoerythrin that absorbs green light and extends the range of photosynthesis. The red pigment is found in vegetables. Some red algae are in fact nearly black, so that increases their photosynthetic efficiency. Brown algae have the pigment fucoxanthin in addition to chlorophyll to widen their absorption range. These red and brown algae grow to depths around 270 meters where the light is less than 1% of surface light.

Leaf Structure and Function - Worksheet 2 - Scribd

Leaves usually have a distinctive upper and a lower surface. The outermost layer of cells of the leaf forms the epidermis. Various types of hairs or trichomes may project from the epidermis. Between the upper and lower epidermis, most of the plant’s green, chlorophyll bearing cells are found. This is where most of the photosynthesis occurs in the plant. Here water and carbon dioxide are combined to make sugars and release oxygen. This tissue is called mesophyll and may be further differentiated into palisade mesophyll where the cells are elongated and densely packed and spongy mesophyll where the cells are irregularly shaped with lots of spaces between them. The epidermis is perforated with openings through which gases enter and exit the leaf. These holes are called stomates. Two cells (called guard cells) regulate the opening and closing of the stomates and thereby control the movement of carbon dioxide, oxygen and water vapor into and out of the leaf. The veins of the leaf are pathways for food and water movement and contain the xylem and phloem which connect to this same vascular tissue in the stem.

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