Match the following.

1. an organism that can make its own food
calvin cycle
2. the dark reaction process of photosynthesis that uses carbon dioxide for the synthesis of carbohydrates
chloroplast
3. a pigment ranging in color from yellow to red; in capturing the sun's light energy for use in photosynthesis
carotenoid pigment
4. a green pigment in plants that serves to trap the sun's energy for photosynthesis
photosynthesis
5. the tiny body that contains chlorophyll; part of the cell in which photosynthesis takes place
chlorophyll
6. a process that involves the use of carbon dioxide and water in the production of glucose and oxygen using the sun's energy
radiation
7. transfer of heat or energy through rays of various wavelengths
autotroph

AUTOTROPH 1.an organism that can make its own food

Plants like algae are autotrophs. They produce their own food with the use of light, carbon dioxide, water, and other chemicals that are vital in their food producing activity. Aside from plants, there are autotroph organisms. An example of this is phytoplanktons. 

CALVIN CYCLE 2.the dark reaction process of photosynthesis that uses carbon dioxide for the synthesis of carbohydrates

The Calvin Cycle has three phases. These are 1) carbon fixation, 2) reduction reactions, and 3) RuBP regeneration. 
This cycle occurs in the stroma of the chloroplast and it converts carbon dioxide and other chemical compounds into glucose.

CAROTENOID PIGMENT 3.a pigment ranging in color from yellow to red; helpful in capturing the Sun's light energy for use in photosynthesis

Carotenoid is a plant pigment. It produces yellow, orange, and red colors of many fruits and vegetables. Carotenoid pigment is identified as a class of phytonutrients that benefits human health. People who consumes carotenoid rich fruits and vegetables enjoys the antioxidant property of the food as well as the Vitamin A that some carotenoid convert into. 

CHLOROPHYLL 4.a green pigment in plants that serves to trap the Sun's energy for photosynthesis

Chlorophyll is the combination of two Greek words "chloros" and "phyllon" which means green and leaf respectively. This pigment also contributes to human wellness as consumption of plants rich in chlorophyll are proven to be very healthy. These health benefits are 1) helps fight cancer, 2) improves liver detoxification, 3) speeds up the healing of wounds, 4) improves digestion and helps control weight, and 5) protects skin from skin virus like cold sores.

CHLOROPLAST 5.the tiny body that contains chlorophyll; part of the cell in which photosynthesis takes place

Chloroplast is a type of plastid that can be distinguished from other plastids due to its green color. Chloroplast is the only plastid that contains chlorophylls a and b, thus its green color. 

PHOTOSYNTHESIS 6.a process that involves the use of carbon dioxide and water in the production of glucose and oxygen using the Sun's energy

RADIATION 7.transfer of heat or energy through rays of various wavelengths

Radiation is defined as energy travelling through space. Sunshine or sunlight is an example of radiation. Its ultra violet rays radiates heat on the earths' surface which in turn helps our autotrophs undergo photosynthesis.

The correct  matching are as follows:
1. AUTOTROPH: An organism that can make its own food.
There are different mode of feeding for living organisms, these include autotrophic, heterotrophic, saprophytic, filter feeding, etc. Of all living organisms, it is only green plants that can produce their own food and all other living organisms depend on plants for food. 
2. CALVING CYCLE: is the dark reaction process which carbon dioxide for the synthesis of carbohydrate.
Photosynthesis is the process by which plants make their food using energy from the sun. The photosynthetic process is divided into light and dark reaction, the dark reaction is also called calving cycle. The light reaction of photosynthesis occur during the day when there is light while the dark reaction occurs in the night.
3. CAROTENOID PIGMENT: A pigment ranging in colour from yellow to red, helpful in capturing sun's light energy for use in photosynthesis.
Carotenoids are organic pigments which are produced by plants, they can also be produced by other forms of living organisms such as bacteria. Carotenoids are responsible for the different colours that are found in plants, they also perform important functions during photosynthesis.
4. CHLOROPHYLL: A green pigment in plants that serves to trap the sun's energy for photosynthesis.
Green plants are able to produce their own food using the energy from the sun majorly because they possess a chemical compound known as chlorophyll which is capable of trapping energy from the sun. Without chlorophyll, a plant can not manufacture its own food.
5. CHLOROPLAST: The tiny body that contains chlorophyll, part of the cell in which photosynthesis takes place.
Chloroplast refers to the plastid which is found in green plants' cells and in which the chlorophyll is enclosed. Photosynthesis usually takes place inside this structure, it is refers to as the site of photosynthesis.
6. PHOTOSYNTHESIS: A process that involves the use of carbon dioxide and water in the production of glucose and oxygen using the sun's energy.
Photosynthesis is the process by which glucose is produced in plants by as a result of chemical reaction which occur between carbon dioxide and water in the presence of sun's energy. This is the major process by which food is produced for all living organisms on earth.
7. RADIATION: Transfer of heat or energy through rays of various wavelengths.
There are three major ways by which heat can be transferred from one substance to another, these are conduction, convection and radiation. Radiation is the process by which heat is transferred through space by means of rays of various wavelengths.

The answer is a because - is an direction