Unit 6 - Plant nutrition

The process by which plants use sunlight, carbon dioxide, and water to produce glucose (sugar) and oxygen.

A green pigment found in chloroplasts within plant cells. It absorbs light energy, especially red and blue wavelengths.

The energy stored within glucose molecules, produced during photosynthesis.

Plants use glucose for a variety of purposes, including energy production, building cell walls, and storing energy.

A complex carbohydrate that plants use to store excess energy.

A structural carbohydrate that provides strength and support to plant cell walls.

The process by which organisms break down glucose to release energy.

A simple sugar that plants use to transport energy throughout their bodies.

A substance produced by plants to attract insects for pollination.

Plants require mineral ions, such as magnesium and nitrates, for growth and development.

The rate of photosynthesis is limited by the factor in shortest supply, even if other factors are abundant. This means increasing the light intensity beyond a certain point won't further increase the rate if another factor, like carbon dioxide, is limiting.

The pathway of carbon dioxide from the atmosphere to the chloroplast of a leaf involves a sequence of diffusion through air spaces, leaf cells, and finally into the chloroplast where photosynthesis occurs.

The upper epidermis is the outermost layer of cells on the top of a leaf. It provides protection and helps to reduce water loss.

The palisade mesophyll is a layer of tightly packed cells in the leaf, containing a lot of chloroplasts. It is the primary site of photosynthesis.

The spongy mesophyll is a layer of loosely packed cells with air spaces, located beneath the palisade mesophyll in a leaf. The air spaces facilitate gas exchange for photosynthesis.

A chemical reaction that occurs in the presence of chlorophyll and sunlight, which uses carbon dioxide, water and light energy to produce glucose and oxygen.

An experiment designed to test if a particular factor is necessary for photosynthesis.

A plant that has been kept in the dark for a prolonged period, causing its starch stores to be used up.

The rate at which photosynthesis occurs, measured by the amount of oxygen produced or carbon dioxide absorbed.

An experiment designed to test the effect of changing light intensity, temperature, or carbon dioxide concentration on the rate of photosynthesis.

The uptake of carbon dioxide and release of oxygen during photosynthesis.

The uptake of oxygen and release of carbon dioxide during respiration.

A pH indicator that changes color in the presence of different concentrations of carbon dioxide.

A factor that limits the rate of photosynthesis, such as light intensity, carbon dioxide concentration or temperature.

The process by which enzymes are permanently damaged and lose their function due to high temperatures.

The chemical equation that represents the process of photosynthesis.

A factor that limits the rate of photosynthesis, such as temperature, light intensity, or carbon dioxide concentration.

A procedure used to test the presence of starch in a leaf, indicating areas of photosynthesis. It involves boiling the leaf, removing chlorophyll with ethanol, softening with water, staining with iodine, and observing the color changes.

A leaf with areas containing chlorophyll (green) and areas lacking chlorophyll (white). Used in the starch test to demonstrate the role of chlorophyll in photosynthesis.

The process of removing chlorophyll from a leaf using hot ethanol. This allows for clearer observation of color changes during the starch test.

The area of a leaf where photosynthesis occurs. This is where chlorophyll is present and starch is stored.

The color change observed in the starch test: Areas containing starch turn blue-black when exposed to iodine solution. No starch means a brown color.