The organs A of a tree have a large number of tiny pores called B on their surface. Each pores is surrounded by a pair of cells called C. the opening and closing of pores in A is controlled by C. the gas D present in air enters the organs A through pores B and utilised in food making process E. the gas F produced during process E goes out through te same pores B. what are A, B, C, D, E, and F?

Answer

To solve the question, we need to identify the components A, B, C, D, E, and F based on the descriptions provided. Here’s a step-by-step breakdown:

### Step 1: Identify Organ A
The question states that "the organs A of a tree have a large number of tiny pores." The primary organ of a tree that contains these pores is the **leaves**.

**Answer for A:** Leaves

### Step 2: Identify Pores B
The tiny pores on the surface of the leaves are known as **stomata**. These are essential for gas exchange in plants.

**Answer for B:** Stomata

### Step 3: Identify Cells C
Each stoma (singular of stomata) is surrounded by a pair of specialized cells that control its opening and closing. These cells are called **guard cells**.

**Answer for C:** Guard cells

### Step 4: Identify Gas D
The gas that enters the leaves through the stomata is **carbon dioxide (CO2)**, which is essential for the process of photosynthesis.

**Answer for D:** Carbon dioxide

### Step 5: Identify Process E
The process in which plants make their food using sunlight, carbon dioxide, and water is called **photosynthesis**.

**Answer for E:** Photosynthesis

### Step 6: Identify Gas F
During photosynthesis, oxygen is produced as a byproduct. This oxygen is released back into the atmosphere through the stomata.

**Answer for F:** Oxygen

### Final Summary
- A: Leaves
- B: Stomata
- C: Guard cells
- D: Carbon dioxide
- E: Photosynthesis
- F: Oxygen