Question

input: read it! photosynthesis
what do you need to survive? food, shelter, water. that’s what animals need, too. but plants are a little bit different. they need water and the energy they get from food, but they don’t 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 →light energy c₆h₁₂o₆ + 6o₂

1. what does the word photosynthesis mean?

a. light + energy
b. energy + mass
c. light + put together
d. energy + sugar

1. which of these are the reactants in the photosynthesis equation?

a. co₂ and water
b. o₂ and sugar
c. energy and co₂
d. sunlight and sugar

1. what are the products in the photosynthesis equation?

a. o₂ and energy
b. co₂ and o₂
c. glucose and o₂
d. o₂ and sunlight

1. which is the organelle where photosynthesis takes place?

a. mitochondria
b. chloroplast
c. chlorophyll
d. vacuole

Explanation:

Question 1

The text says "Photo means 'light' and synthesis means to 'put together'". So we check the options. Option C is "Light + put together" which matches the meaning of photosynthesis.

The text states the reactants for photosynthesis are Carbon Dioxide ($CO_2$), water ($H_2O$), and light energy. The equation shows $6CO_2 + 6H_2O$ as reactants. Option A is $CO_2$ and water, which are reactants. Option B has products (sugar and $O_2$), Option C includes energy (not a reactant in the same sense as the substances), Option D has sugar (a product) and sunlight (energy source, not a reactant substance).

The text says products of photosynthesis are glucose (sugar) and oxygen ($O_2$). The equation shows $C_6H_{12}O_6$ (glucose) and $6O_2$ as products. Option C is Glucose and $O_2$, which matches. Option A has energy (not a product), Option B has $CO_2$ (a reactant), Option D has sunlight (energy source, not a product).

Answer:

C. Light + put together

Question 2