Plant process worksheet - Free Printable

Problem Analysis and Solution

The image and questions provided are related to plant biology, specifically focusing on the processes of transport in plants, energy storage, and cellular functions. Let's solve each question step by step.

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#### Question 1: What substance flows through a plant as shown in this image?

- Image Description: The image shows a plant with arrows indicating the flow of a substance from the roots up through the stem and into the leaves.
- Key Concept: Plants have a vascular system consisting of xylem and phloem. Xylem transports water and minerals from the roots to the leaves, while phloem transports sugars (glucose) from the leaves to other parts of the plant.
- Arrows in the Image: The arrows point upwards from the roots toward the leaves, which is characteristic of the movement of water and minerals in xylem.
- Options:
- A. glucose
- B. oxygen
- C. carbon dioxide
- D. water

- Reasoning:
- Glucose (option A) is transported in the phloem, not the xylem, and typically moves from leaves to other parts of the plant.
- Oxygen (option B) and carbon dioxide (option C) are gases involved in photosynthesis but do not flow through the plant's vascular system in the manner depicted.
- Water (option D) is transported in the xylem from the roots to the leaves, matching the direction of the arrows in the image.

- Correct Answer: D. water

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#### Question 2: Which process do plants use to store energy?

- Key Concept: Plants store energy in the form of glucose, which is produced during photosynthesis. Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose.
- Options:
- A. photosynthesis
- B. cellular respiration
- C. transpiration
- D. phototropism

- Reasoning:
- Photosynthesis (option A) is the process where plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. This is the primary way plants store energy.
- Cellular respiration (option B) is the process by which cells break down glucose to release energy; it does not store energy.
- Transpiration (option C) is the process of water loss from plants through stomata and is unrelated to energy storage.
- Phototropism (option D) is the growth response of plants toward light and is not related to energy storage.

- Correct Answer: A. photosynthesis

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#### Question 3: Which process occurs in the mitochondria?

- Key Concept: Mitochondria are organelles found in eukaryotic cells, including plant cells. They are often referred to as the "powerhouses" of the cell because they generate energy in the form of ATP through cellular respiration.
- Options:
- A. photosynthesis
- B. cellular respiration
- C. transpiration
- D. phototropism

- Reasoning:
- Photosynthesis (option A) occurs in the chloroplasts, not the mitochondria.
- Cellular respiration (option B) is the process that takes place in the mitochondria, where glucose is broken down in the presence of oxygen to produce ATP, carbon dioxide, and water.
- Transpiration (option C) is a process involving water movement in plants and does not occur in mitochondria.
- Phototropism (option D) is a growth response to light and is not related to mitochondrial function.

- Correct Answer: B. cellular respiration

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Final Answers:

1. D. water
2. A. photosynthesis
3. B. cellular respiration

Boxed Final Answer:
\[
\boxed{D, A, B}
\]