what do you need to survive? food, shelter, water. thats what animals need, too. but plants are a little bit different. they need water and the energy they get from food, but they dont eat like we do. they use a process called photosynthesis. during photosynthesis, plants make food in the form of sugar and produce oxygen. photo means \light\ and synthesis means to \put together.\
there are three reactants needed for a plant to make its own food. a reactant is what is needed for a reaction to take place. the reactants needed to create food for the plant to survive is water, carbon dioxide, and energy from the sun.
chlorophyll in the leaves of a green plant absorbs sunlight. chlorophyll is a green pigment that allows the plant to absorb sunlight. it is found in the chloroplasts of the leaf. chloroplasts are the organelles where photosynthesis takes place and is only found in plant cells.
the plant obtains water and nutrients from the soil. they are absorbed through the xylem and phloem of the plant’s roots, stems, and leaves. carbon dioxide from the air enters the plant through the stomata on the underside of the leaves.
the three reactants carbon dioxide (co₂), water(h₂o), plus light energy produce the food the plants need to survive and grow.
the products of photosynthesis are glucose in the form of sugar and oxygen. products are substances that are formed in a chemical reaction.
without the process of photosynthesis, plants wouldn’t survive. without plants, animals and humans couldn’t survive! the chemical equation for photosynthesis is written:
6co₂ + 6h₂o xrightarrow{light energy} c₆h₁₂o₆ + 6o₂

1. which of the following does not happen during photosynthesis?
a. o₂ is given off.
b. glucose is made.
c. the sun’s energy is reflected.
d. chlorophyll absorbs the sun’s energy.

2. which is the correct (unbalanced) equation for photosynthesis?
a. h₂o + (implies) co₂ + o₂
b. o₂ + h₂o (implies) sugar + energy
c. co₂ + h₂o + (implies)sugar + o₂
d + h₂o (implies) h₂o + sugar +

3. where on the leaf does carbon dioxide enter the plant?
a. stomata
b. xylem
c. phloem
d. chloroplasts

use the vocabulary words from
ead it\ to complete the following sentences.
products reactants chloroplasts
chlorophyll photosynthesis
when we look at a plant, we notice that the leaves are green. this is due to the pigment (4)______ in the leaves that allows the plant to absorb sunlight. plants use the light energy in a reaction called (5)______ where they make food in the form of sugar and produce oxygen. (6)______, which are only found in plant cells, is where the food making reaction takes place. in this reaction: water, carbon dioxide, and energy from the sun are needed for the reaction and are called (7)______. the things that are formed in the reaction, or the (8)______, are sugar and oxygen

Question

what do you need to survive? food, shelter, water. thats what animals need, too. but plants are a little bit different. they need water and the energy they get from food, but they dont eat like we do. they use a process called photosynthesis. during photosynthesis, plants make food in the form of sugar and produce oxygen. photo means \light\ and synthesis means to \put together.\
there are three reactants needed for a plant to make its own food. a reactant is what is needed for a reaction to take place. the reactants needed to create food for the plant to survive is water, carbon dioxide, and energy from the sun.
chlorophyll in the leaves of a green plant absorbs sunlight. chlorophyll is a green pigment that allows the plant to absorb sunlight. it is found in the chloroplasts of the leaf. chloroplasts are the organelles where photosynthesis takes place and is only found in plant cells.
the plant obtains water and nutrients from the soil. they are absorbed through the xylem and phloem of the plant’s roots, stems, and leaves. carbon dioxide from the air enters the plant through the stomata on the underside of the leaves.
the three reactants carbon dioxide (co₂), water(h₂o), plus light energy produce the food the plants need to survive and grow.
the products of photosynthesis are glucose in the form of sugar and oxygen. products are substances that are formed in a chemical reaction.
without the process of photosynthesis, plants wouldn’t survive. without plants, animals and humans couldn’t survive! the chemical equation for photosynthesis is written:
6co₂ + 6h₂o xrightarrow{light energy} c₆h₁₂o₆ + 6o₂

1. which of the following does not happen during photosynthesis?
a. o₂ is given off.
b. glucose is made.
c. the sun’s energy is reflected.
d. chlorophyll absorbs the sun’s energy.

2. which is the correct (unbalanced) equation for photosynthesis?
a. h₂o +  (implies) co₂ + o₂
b. o₂ + h₂o  (implies) sugar + energy
c. co₂ + h₂o +  (implies)sugar + o₂
d  + h₂o  (implies) h₂o + sugar +

3. where on the leaf does carbon dioxide enter the plant?
a. stomata
b. xylem
c. phloem
d. chloroplasts

use the vocabulary words from
ead it\ to complete the following sentences.
products  reactants  chloroplasts
chlorophyll  photosynthesis
when we look at a plant, we notice that the leaves are green. this is due to the pigment (4)______ in the leaves that allows the plant to absorb sunlight. plants use the light energy in a reaction called (5)______ where they make food in the form of sugar and produce oxygen. (6)______, which are only found in plant cells, is where the food making reaction takes place. in this reaction: water, carbon dioxide, and energy from the sun are needed for the reaction and are called (7)______. the things that are formed in the reaction, or the (8)______, are sugar and oxygen

Accepted Answer

### Question 1
# Brief Explanations:
To solve this, we analyze each option using the photosynthesis information:
- Option A: The text says photosynthesis produces oxygen, so O₂ is given off. Correct event.
- Option B: Photosynthesis makes glucose (sugar), so glucose is made. Correct event.
- Option C: Chlorophyll absorbs sun energy, not reflect it. So this does not happen.
- Option D: The text states chlorophyll absorbs sunlight. Correct event.
# Answer:
C. The Sun’s energy is reflected.

### Question 2
# Brief Explanations:
The photosynthesis reactants are CO₂, H₂O, and light energy, and products are sugar (glucose) and O₂. The correct unbalanced equation should have these reactants and products.
- Option A: Reactants and products don't match (has H₂O as reactant but products are CO₂ and O₂, incorrect).
- Option B: Reactants are O₂ and H₂O, which is wrong (O₂ is a product, not reactant).
- Option C: Reactants are CO₂, H₂O, and light (represented by the blank), products are sugar and O₂. This matches.
- Option D: The equation is illogical (repeats H₂O, wrong reactants/products).
# Answer:
C. $\ce{CO_{2} + H_{2}O + 	ext{light energy} \implies 	ext{Sugar} + O_{2}}$

### Question 3
# Brief Explanations:
From the text: "Carbon dioxide from the air enters the plant through the stomata on the underside of the leaves."
- Option A: Stomata are where CO₂ enters. Correct.
- Option B: Xylem transports water/nutrients, not CO₂. Incorrect.
- Option C: Phloem transports food, not CO₂. Incorrect.
- Option D: Chloroplasts are where photosynthesis occurs, not where CO₂ enters. Incorrect.
# Answer:
A. stomata

### Question 4 (Vocabulary Fill - ins)
# Brief Explanations:
1. (4): The green pigment that absorbs sunlight is chlorophyll.
2. (5): The process plants use light energy to make food is photosynthesis.
3. (6): Photosynthesis occurs in chloroplasts (only in plant cells).
4. (7): Water, CO₂, and sun energy are reactants (needed for the reaction).
5. (8): Sugar and oxygen are products (formed in the reaction).
# Answer:
(4) chlorophyll
(5) photosynthesis
(6) chloroplasts
(7) reactants
(8) products

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