5. how is the substance you identified in question 3 changed between its entry and its exit?
6. use the general equation for photosynthesis and model 1 to answer the following questions.
a. what are the reactants for photosynthesis?
b. where do these reactants enter the leaf?
c. what are the products of photosynthesis?
d. from where do the products leave the leaf?
7. categorize all the components involved in photosynthesis as either matter or energy.
model 2 – cross section of the internal structure of a leaf
upper epidermis → cuticle
chloroplast →

Question

5. how is the substance you identified in question 3 changed between its entry and its exit?
6. use the general equation for photosynthesis and model 1 to answer the following questions.
  a. what are the reactants for photosynthesis?
  b. where do these reactants enter the leaf?
  c. what are the products of photosynthesis?
  d. from where do the products leave the leaf?
7. categorize all the components involved in photosynthesis as either matter or energy.
model 2 – cross section of the internal structure of a leaf
upper epidermis →  cuticle
chloroplast →

Accepted Answer

### Question 6a
# Brief Explanations:
The general equation for photosynthesis is $ 6CO_2 + 6H_2O \xrightarrow[\text{Chlorophyll}]{\text{Light Energy}} C_6H_{12}O_6 + 6O_2 $. Reactants are the substances that start a chemical reaction, so from this equation, the reactants for photosynthesis are carbon dioxide ($ CO_2 $) and water ($ H_2O $).
# Answer:
The reactants for photosynthesis are carbon dioxide ($ CO_2 $) and water ($ H_2O $).

### Question 6b
# Brief Explanations:
Carbon dioxide enters the leaf through small openings called stomata, which are mainly present on the lower epidermis (and sometimes upper) of the leaf. Water enters the leaf through the xylem vessels, which transport water from the roots to the leaves. The roots absorb water from the soil, and it is transported up to the leaf.
# Answer:
- Carbon dioxide ($ CO_2 $) enters the leaf through stomata (usually on the lower epidermis).
- Water ($ H_2O $) enters the leaf through xylem vessels (transported from roots to leaves).

### Question 6c
# Brief Explanations:
From the general photosynthesis equation $ 6CO_2 + 6H_2O \xrightarrow[\text{Chlorophyll}]{\text{Light Energy}} C_6H_{12}O_6 + 6O_2 $, the products are the substances formed after the reaction. So the products of photosynthesis are glucose ($ C_6H_{12}O_6 $) and oxygen ($ O_2 $).
# Answer:
The products of photosynthesis are glucose ($ C_6H_{12}O_6 $) and oxygen ($ O_2 $).

### Question 6d
# Brief Explanations:
Oxygen ($ O_2 $) produced during photosynthesis exits the leaf through the stomata (the same openings that $ CO_2 $ entered through, usually on the lower epidermis). Glucose ($ C_6H_{12}O_6 $) is either used within the leaf cells for energy, stored as starch, or transported to other parts of the plant through the phloem vessels. When transported, it moves out of the leaf through the phloem.
# Answer:
- Oxygen ($ O_2 $) leaves the leaf through stomata.
- Glucose ($ C_6H_{12}O_6 $) leaves the leaf (to other plant parts) through phloem vessels (or is used within the leaf).

### Question 7
# Brief Explanations:
- **Matter components**: These have mass and occupy space. In photosynthesis, carbon dioxide ($ CO_2 $), water ($ H_2O $), glucose ($ C_6H_{12}O_6 $), and oxygen ($ O_2 $) are matter as they are chemical substances with mass and volume. Also, chloroplasts (the organelle where photosynthesis occurs) and the leaf structures (like epidermis, etc.) involved are matter.
- **Energy components**: Light energy (from the sun) is the energy input for photosynthesis. Chlorophyll captures this light energy. So light energy is the energy component, and chlorophyll is a pigment that absorbs light energy (but chlorophyll itself is matter, the energy it absorbs is the energy component).
# Answer:
- **Matter**: Carbon dioxide ($ CO_2 $), water ($ H_2O $), glucose ($ C_6H_{12}O_6 $), oxygen ($ O_2 $), chloroplasts, leaf structures (epidermis, etc.), chlorophyll (the pigment, as a chemical substance).
- **Energy**: Light energy (from the sun).

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QUESTION IMAGE

Question

Explanation:

Question 6a

Answer:

Question 6b