7th grade photosynthesis worksheet

Photosynthesis and Respiration

Photosynthesis and respiration are two vital processes that occur in living organisms . Photosynthesis is the process by which green plants, algae , and some bacteria convert light energy , carbon dioxide , and water into glucose and oxygen . Respiration , on the other hand, is the process by which cells break down glucose and other organic compounds to release energy that is used for cellular activities.

Photosynthesis

• Definition: Photosynthesis is the process by which green plants, algae , and some bacteria convert light energy , carbon dioxide , and water into glucose and oxygen .
• Equation: 6CO 2 + 6H 2 O + Light energy → C 6 H 12 O 6 + 6O 2
• Key Factors: Light , chlorophyll, carbon dioxide , and water are essential for photosynthesis to occur.
• Organisms : Photosynthesis occurs in green plants, algae , and some bacteria .

Respiration

• Definition: Respiration is the process by which cells break down glucose and other organic compounds to release energy that is used for cellular activities.
• Equation: C 6 H 12 O 6 + 6O 2 → 6CO 2 + 6H 2 O + Energy
• Key Factors: Oxygen and glucose are essential for respiration to occur.
• Organisms : Respiration occurs in all living organisms , including plants, animals, and microorganisms .

Study Guide

Here are some key points to remember when studying photosynthesis and respiration :

• Understand the chemical equations for photosynthesis and respiration and the products formed in each process.
• Learn about the organelles involved in these processes, such as chloroplasts in photosynthesis and mitochondria in respiration .
• Explore the factors that affect the rate of photosynthesis , such as light intensity, carbon dioxide concentration, and temperature .
• Understand the different types of respiration , including aerobic respiration (with oxygen ) and anaerobic respiration (without oxygen ).
• Explore the interconnected nature of photosynthesis and respiration in the carbon cycle and energy flow within ecosystems .

By understanding the intricacies of photosynthesis and respiration , you will gain valuable insights into the fundamental processes that sustain life on Earth .

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Photosynthesis

Grade 7 science worksheets.

Every topic or lesson that a tutor teaches has an objective of making the students understand concepts related to the topic. For this, they need assessment tools which allow tutors to measure how well a student has assimilated the theory taught. One of the most basic tools is worksheets.

These worksheets on  “Photosynthesis”  can help both tutors and students alike to review the lesson, get a feedback and eventually improve their respective performances.

Considering the importance of this topic and its significance in learning higher levels of science in the future, it is important that students understand the process and concept of  ‘Photosynthesis’  well.

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Photosynthesis  is the process by which light energy is tapped and changed into chemical energy in the form of the food sugar. Carbon dioxide is taken in by the plants and oxygen is given out.

Sunlight + carbon dioxide + water = sugar + oxygen

 Carbon dioxide and water are combined and their atoms bonds to form a sugar molecule. The bonds of the sugar molecule store the energy gained from light.

The following is the chemical reaction for photosynthesis:

Where does photosynthesis occur?

Photosynthesis is carried out by chloroplasts within the cells of plants. Chloroplasts contain chlorophyll (green color). Chlorophyll absorbs sun’s energy that is sunlight. The photons in light (i.e., the light particles) hit with the electrons in the chlorophyll, which transforms the energy.

A group of bacteria called cyan is originally the chloroplast. This is one of the examples of symbiosis. Here, the cyan bacteria were passed onto upon the host cells as eukaryotic host cells millions of years ago and the method of photosynthesis began. Not only are these ancient symbionts, cyan bacteria which are spread all over the plant in the oceans (three-fourth of the earth’s surface) are responsible for most of the photosynthesis occurring on Earth today.

(Note: A eukaryote is an organism with complex cells, or a single cell which has a complex structure.  These cells have the genetic material in the chromosomes in the nucleus of the cell.)

Photosynthesis and the properties of energy

In photosynthesis, light energy is converted to chemical energy and stored in the form of food sugars. The law of conservation of energy is followed that is the  amount of light that energy input equals the amount of chemical energy that is the output.

  Photosynthesis requires CO2+ Water H2O and sunlight. The processes by which plants and some other organisms like algae capture light energy and use it to make food from carbon dioxide and water.  

Chemical equation for Photosynthesis

Glucose is a type of sugar that provides us with energy .

Glucose is needed by all forms of life to produce energy.  It is an essential part of the stored food.

The process by which glucose is broken down is called respiration –

During respiration, the chemical energy stored in glucose is converted into other forms of energy, such as mechanical energy or thermal energy.

Plants use some of this energy to grow, reproduce , and perform other life functions. Unused energy is stored as food by the plants.

Plants go through both photosynthesis and respiration.

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Sample Questions

Q1. The process of making food in plants is called

a) Respiration b) Transpiration c) Photosynthesis

Q2. Suzanne is sitting on a garden bench surrounded with lot of plants. Which of these gases is Suzanne likely to inhale the most?

a) Nitrogen b) Carbon dioxide c) Oxygen d) None of the above

Q3. Photosynthesis is the process which takes place in

i) Mitochondria ii) Chloroplast iii) Ribosome

Q4. Life without Photosynthesis would not be possible.

i) True ii) False

Q5. The tubes that bring water from the roots to the leaves are called

i) Xylem ii) Phloem

Q6. Fill in the blanks

i) In photosynthesis, _______________ is changed into chemical energy. ii) The first step in Photosynthesis is _______________ of Sunlight. iii) Products of Photosynthesis  are _______________  and _______________

iv ) Identify this Organelle. It is found only in the Plant Cell. Label the parts as – Grana, Stroma and single Thylakoid _______________

Check Point

I. Fill in the blanks –  

• Photosynthesis refers to the process by which …………… …………… is tapped and transformed into chemical energy in the form of the ………… ………….
• The bonds within the sugar molecule store the energy obtained from ……………
• Chloroplasts contain ………………….., a lipid that gives plants their …………….. Color.
• The chloroplast is actually derived from a group of bacteria known as………. bacteria.
• The process by which …………… is broken down is called respiration.

II.  State True or False –

• Oxygen from water is released as a by-product in this process of photosynthesis.
• light energy + 6CO 2 + 6H 2 O -> C 6 H 12 O 6 + 6O 2
• Photosynthesis is carried out by chromoplasts within the cells of plants.
• The photons in light collide with the neutrons in the chlorophyll molecule, which starts the process of energy transformation.
• Plants only go through photosynthesis.

I.Fill in the blanks –  

• Light energy, food sugar
• Chlorophyll, green

II.True or False –

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Photosynthesis Worksheets

Did you know the planet Earth would be lifeless without photosynthesis? Do you know how plants make their own food? Find answers to these and many such queries with our printable photosynthesis worksheets for students of grade 3 through grade 7. Featured here are vibrant charts illustrating the photosynthesis process, the equation of photosynthesis, precise and apt definitions of key terms in photosynthesis and activities like label the process, complete the paragraph, differentiate between light and dark reactions and much more. Our free photosynthesis worksheets are definitely worth a try!

Photosynthesis Basic Chart

This photosynthesis basic chart facilitates grasping and retaining the process of photosynthesis with ease. Equip children of grade 3 and grade 4 with this chart to familiarize them with the concept.

• Download the Chart

Photosynthesis Equations Chart

The photosynthesis equation is presented in a visually appealing way in this chart. The word equation states the reactants - Co 2 and H 2 O and the products glucose and O 2 , followed by a balanced chemical equation.

Photosynthesis Equations Worksheet

Follow-up the equation chart with this complete the photosynthesis equations activity pdf, for children of grade 5 and grade 6 to reaffirm the concepts. Word equation and balanced chemical equations are included here.

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Photosynthesis Process | Descriptions

This printable handout illustrates the process of photosynthesis with concise descriptions. Comprehend the vital components involved and the products of photosynthesis with easy-to-understand descriptions.

Photosynthesis | Basic Vocabulary

This basic photosynthesis vocabulary worksheet simplifies the process of photosynthesis. The concept is broken into simple chunks for a vivid understanding of the terms and process involved in photosynthesis.

Photosynthesis | Advanced Vocabulary

Comprehend the process of photosynthesis with this vocabulary worksheet. Definitions of terms associated with the light and dark reactions of photosynthesis have been included here.

What is Photosynthesis?

Observe the photosynthesis process diagram presented in this printable 4th grade and 5th grade worksheet and plug in the words from the word box to complete the paragraph and answer the question "What is photosynthesis?".

Label the Photosynthesis Diagram

Help students transit from passive listeners to active participants with this labelling the photosynthesis process worksheet pdf. Direct the 3rd grade and 4th grade students to use the words from the word box to label the diagram.

Label the Reactants and Products of Photosynthesis

Refine the knowledge of students with this worksheet. They comprehend the major reactants and products and label them by recollecting the vocabulary words.

Describe the Reactants and Products

Brainstorm children of what they know and initiate discussions about each reactant and product with this worksheet. Instruct students to identify the reactants and products and describe them in a sentence.

Photosynthesis Process | Activity

Recapitulate the process of photosynthesis with this cut and paste activity worksheet pdf. Snip the reactants and products involved in the process of photosynthesis and glue them in the appropriate boxes.

Fill in the blanks

Test comprehension of 6th grade and 7th grade students with this fill in the blanks worksheet, that includes subtle details of the photosynthesis process. Read the sentences and plug the missing term(s).

Photosynthesis | Matching Activity

Employ this photosynthesis-matching-activity to assess the knowledge of students. Make one-to-one correspondence between the photosynthesis vocabulary words and their descriptions.

Structure of the Chloroplast | Chart

Develop an in-depth understanding of the process of photosynthesis with this printable chart. The labeled structure of the chloroplast chart indicates the exact location of the two processes within the leaf.

The Two Phases of Photosynthesis | Chart

The light-dependent and light-independent reactions of photosynthesis have been clearly illustrated in this chart. The reactants and products of each stage are labeled as well.

Label the Light and Dark Reactions

Actively involve students with this label-the-photosynthesis-reactions activity. Reiterate the Light reactions and the Calvin-Benson Cycle by labeling the two reactions along with their reactants and products.

Light Reaction Vs Dark Reaction

The differences between the light and dark reactions are stated vividly using a versatile graphic organizer, the T-chart. Integrate the T-chart to help students of grade 6 and grade 7 comprehend the differences between the light and dark reactions of photosynthesis.

Photosynthesis Review Questions

Posing questions is an effective teaching technique. The questions in this pdf worksheet are constructed to summarize the two stages in the process of photosynthesis and elicit responses in the form of definitions and comparisons.

The story of how humans and animals live is breathtaking. What's even more breathtaking is how plants get their energy on an everyday basis. Read this printable passage, and answer questions that ask you to eliminate the wrong title, write a short note and more.

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Photosynthesis

9th -  10th  , 4th -  8th  , photosynthesis & cellular respiration, 6th -  8th  , microscope parts and function, 8th -  11th  .

7th Grade Plant Unit Practice Quiz

6th - 8th grade.

22 questions

Introducing new   Paper mode

No student devices needed.   Know more

• 1. Multiple Choice Edit 30 seconds 1 pt The main source of energy for all life comes from ____. the Earth the moon the sun the food we eat/make

The reactants (what is needed for) of photosynthesis are

sugar and water.

sugar and oxygen.

carbon dioxide and water.

carbon dioxide and oxygen.

• 3. Multiple Choice Edit 1 minute 1 pt What are the products of photosynthesis? Carbon dioxide and water Carbon dioxide and oxygen Glucose and oxygen Glucose and water
• 4. Multiple Choice Edit 2 minutes 1 pt Which of the following is the correct equation for PHOTOSYNTHESIS? 6CO 2  + 6H 2 O --> 6O 2  + C 6 H 12 O 6 6CO 2  + C 6 H 12 O 6 + 6H 2 O --> O 2  6O 2  + 6H 2 O --> 6CO 2  + C 6 H 12 O 6 C 6 H 12 O 6   + 6O 2  ---> 6H 2 O + 6CO 2  
• 5. Multiple Choice Edit 1 minute 1 pt Which gas is removed from the atmosphere during photosynthesis? hydrogen oxygen nitrogen carbon dioxide
• 6. Multiple Choice Edit 30 seconds 1 pt What gas is released by plants during photosynthesis? sulfur carbon dioxide oxygen hydrogen
• 7. Multiple Choice Edit 30 seconds 1 pt Which plant structure is extremely necessary for photosynthesis to take place? leaves flower petals anthers pistils
• 8. Multiple Choice Edit 30 seconds 1 pt What is another name for glucose? Chlorophyll Chloroplasts Stomata Sugar
• 9. Multiple Choice Edit 30 seconds 1 pt Where does carbon dioxide enter plants> The leaves Stomata Roots Stem
• 10. Multiple Choice Edit 30 seconds 1 pt What are the little holes underneath a leaf called? Ribosomes Roots Stomata Pores
• 11. Multiple Choice Edit 30 seconds 1 pt Why do plants go through photosynthesis? To make food for us To make food for themselves They're bored and have nothing else to do

What would happen to us if plants stopped producing oxygen?

We would die since we breathe oxygen

We would keep living since we breathe carbon dioxide

• 13. Multiple Choice Edit 30 seconds 1 pt Where does a plant absorb the water that it uses during photosynthesis? Leaves Stem Roots Petals
• 15. Multiple Choice Edit 15 minutes 1 pt What is the male fertilizing organ called Pistil Anther Filament Stamen
• 16. Multiple Choice Edit 15 minutes 1 pt What organ transports sugar throughout the plant Phloem Stomata Guard cells Cambium
• 17. Multiple Choice Edit 15 minutes 1 pt Which organ transports water throughout the plant Phloem Xylem Stomata Cambium

What part of the plant is responsible for making food?

What is the function of the flower part of a plant?

help the plant reproduce

transport water to the leaves

make food for the plant

provide support for the plant

• 20. Multiple Choice Edit 1 minute 1 pt Which of these plant structures supports a plant so it does not fall over? Seed Root Leave Flower
• 22. Multiple Choice Edit 15 minutes 1 pt Which of the following structure can be found in a plant cell but NOT an animal cell? vacuole nucleus chloroplast mitochondria

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Photosynthesis Crossword Puzzle Worksheets 2024

Are you curious about the photosynthesis process of plants? If yes, let’s jump into our photosynthesis crossword puzzle to answer any interrogations.

Welcome to our WorksheetZone in which you have opportunities to be exposed to plenty of printable crossword puzzles with different templates and themes, as well as diverse activities that meet distinctive users’ needs. Without a doubt, you can also search for photosynthesis crossword puzzles that not only recall your biological knowledge but also broaden your horizons in this field.

This life science crossword explains the significance of photosynthesis. Students will unravel the mysteries of how plants make their own sustenance by completing the crossword puzzle. If they run into trouble, they can check the word bank!

No need to find what you are searching for anymore? Make your own photosynthesis crossword based on what aspects you would like to display with our crossword maker . Including the visual aids and plant-themed decorations is a terrific template and design for your worksheet.

Our website is undoubtedly user-friendly, with features and functions that are simple to navigate. You can choose to download it in person under the PDF version or use the online one to play with your partner and enjoy quality time with them.

On top of that, our Worksheet Zones photosynthesis crossword puzzles are fully free and simple to access, which is one of their best features. Many worksheets appear to be available when you type the exact search terms you want to use. Consequently, why hold off visiting our website any longer? Come explore the photosynthesis puzzle printables to have profound insight into the biological world.

Besides that, we also provide points lines and planes crossword puzzle that may ignite your interest in Math - an important subject in the educational system. 

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