Photosinthisis

Question 1

What is photosynthesis?

Answer 1

The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Question 2

True or False: Photosynthesis occurs only in the roots of plants.

Answer 2

False

Question 3

Which pigment is primarily responsible for capturing light energy in plants?

Answer 3

Chlorophyll

Question 4

Fill in the blank: The formula for photosynthesis can be represented as 6CO2 + 6H2O + light energy → C6H12O6 + 6O2. What does C6H12O6 represent?

Answer 4

Glucose

Question 5

What are the two main stages of photosynthesis?

Answer 5

Light-dependent reactions and the Calvin cycle (light-independent reactions).

Question 6

In which part of the plant does photosynthesis primarily take place?

Answer 6

In the leaves.

Question 7

Multiple Choice: Which of the following is NOT a product of photosynthesis? A) Oxygen B) Glucose C) Carbon Dioxide D) Water

Answer 7

C) Carbon Dioxide

Question 8

What are stomata?

Answer 8

Small openings on the surface of leaves that allow for gas exchange.

Question 9

True or False: Photosynthesis only occurs during the day.

Answer 9

True

Question 10

What is the role of water in photosynthesis?

Answer 10

Water is a reactant that is split to provide electrons and protons during the light-dependent reactions.

Question 11

Fill in the blank: The process of converting carbon dioxide into glucose during photosynthesis occurs in the __________.

Answer 11

Calvin cycle

Question 12

What is the primary energy source for photosynthesis?

Answer 12

Sunlight

Question 13

Multiple Choice: Which type of organism is capable of photosynthesis? A) Animals B) Fungi C) Plants D) All of the above

Answer 13

C) Plants

Question 14

What gas is released as a byproduct of photosynthesis?

Answer 14

Oxygen

Question 15

What is the significance of photosynthesis to the ecosystem?

Answer 15

It produces oxygen and organic compounds that are essential for life.

Question 16

True or False: Photosynthesis can occur in plants that do not have chlorophyll.

Answer 16

False

Question 17

What are the light-dependent reactions primarily responsible for?

Answer 17

Converting light energy into chemical energy in the form of ATP and NADPH.

Question 18

Fill in the blank: Plants absorb carbon dioxide from the air through their __________.

Answer 18

Stomata

Question 19

What is the primary function of the Calvin cycle?

Answer 19

To convert carbon dioxide and other compounds into glucose.

Question 20

Multiple Choice: Which of the following factors can affect the rate of photosynthesis? A) Light intensity B) Carbon dioxide concentration C) Temperature D) All of the above

Answer 20

D) All of the above

Question 21

What is the role of NADPH in photosynthesis?

Answer 21

It serves as a reducing agent, providing electrons for the Calvin cycle.

Question 22

True or False: Chloroplasts are the organelles where photosynthesis occurs.

Answer 22

True

Question 23

What is photorespiration?

Answer 23

A process in which oxygen is consumed and carbon dioxide is released, occurring when the enzyme RuBisCO reacts with oxygen instead of carbon dioxide.

Question 24

Fill in the blank: The overall efficiency of photosynthesis is typically around __________ percent.

Answer 24

1-2%

Question 25

What is the relationship between photosynthesis and cellular respiration?

Answer 25

Photosynthesis converts carbon dioxide and water into glucose and oxygen, while cellular respiration uses glucose and oxygen to produce energy, carbon dioxide, and water.