Energetics

There are more Stoma on the lower epidermis of leaves. Think about the role the stoma play and explain why there are more stoma on the lower epidermis.

Answer explanation

Stomata are primarily involved in gas exchange and transpiration. Having more stomata on the lower epidermis reduces water loss and protects them from direct sunlight, which helps maintain moisture and optimize photosynthesis.

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NGSS.MS-LS1-6

Autotrophs make their own food using energy from

Answer explanation

Autotrophs, such as plants, use sunlight to perform photosynthesis, converting light energy into chemical energy to create their own food.

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NGSS.MS-LS1-6

The food making process is called

Answer explanation

The food-making process in plants is called photosynthesis. During this process, plants convert sunlight, carbon dioxide, and water into glucose and oxygen, which is essential for their growth and energy.

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NGSS.MS-LS1-6

What are the raw materials for photosynthesis?

Answer explanation

The raw materials for photosynthesis are carbon dioxide and water. Plants use these substances, along with sunlight, to produce glucose and oxygen through the process of photosynthesis.

What gas is used in the process? What gas is released?

Answer explanation

In photosynthesis, carbon dioxide is used as a reactant, while oxygen is released as a byproduct. Therefore, the correct gases are: used - carbon dioxide, released - oxygen.

Tags

NGSS.MS-LS1-6

Using the graph to the left and your knowledge from the video, what is the wavelength range for yellow and green? Explain your reasoning.

Answer explanation

The wavelength range for yellow is approximately 570-590 nm, and for green, it is about 495-570 nm. This is based on the visible light spectrum, where yellow and green fall within these specific ranges.

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NGSS.MS-LS1-6

Summarize the graph of Rate of Photosynthesis and Carbon dioxide concentration.

Answer explanation

The graph shows that as carbon dioxide concentration increases, the rate of photosynthesis also rises, indicating a direct relationship until a saturation point is reached, beyond which the rate levels off.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

Summarize the graph of Rate of photosynthesis and Temperature.

Answer explanation

The graph shows that the rate of photosynthesis increases with temperature up to an optimal point, after which it declines due to enzyme denaturation. This indicates a clear relationship between temperature and photosynthesis efficiency.

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NGSS.MS-LS1-5

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What does the term Aerobic mean?

Answer explanation

The term 'Aerobic' refers to processes that require oxygen. In biology, it often describes organisms or activities that utilize oxygen for energy production, such as aerobic respiration or exercise.

Why would the demand for oxygen increase in a person? What response would the person have if more oxygen was needed by the cells?

Answer explanation

The demand for oxygen increases during physical activity or stress due to higher cellular respiration needs. The body responds by increasing breathing rate and heart rate to supply more oxygen to the cells.

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NGSS.HS-LS1-3

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