Refer to the given dichotomous key and answer the following questions.
I. (a) The cells of tissue have walls. - Go to II
(b) The cells of tissue do not possess wall. - Go to III
II. (a) Tissue made of one type of cells. - Go to IV
(b) Tissue, made of more than one type of cells. - Go to V
III. (a) The tissue lines the alveoli of lungs. -P
(b) The tissue forms shock absorbing cushion around some vital organs. - Q
IV. (a) Cells of tissue contain air cavities and it provides buoyancy. -R
(b) The tissue provides mechanical strength and flexibility to young dicot stems and petioles. - S
V. (a) Tissue conducts water. - T
(b) Tissue conducts organic solutes. - U
Select the correct match of tissue and its location.

Options

A. P-Wall of Bowman's capsule
S-Epidermal covering of legume seeds
B. Q-Blubber of whale
R-Covering of nuts
C. R-Petiole of lotus
U-Hump of camel
D. Q-In subcutaneous tissue
T-Stele or vascular cylinder of monocot root

Answer

To solve the question using the given dichotomous key, we will follow the steps outlined in the key to identify the correct match of tissue and its location.

### Step-by-Step Solution:

1. **Identify if the cells of the tissue have walls or not:**
- The first question in the dichotomous key asks if the cells of the tissue have walls.
- If **yes**, we go to step II.
- If **no**, we go to step III.

2. **Proceeding with the first step:**
- Since we are looking for tissues with walls, we will assume the answer is **yes** and move to step II.

3. **Determine the type of tissue based on cell types:**
- In step II, we check if the tissue is made of one type of cell or more than one type of cell.
- If **one type**, we go to step IV.
- If **more than one type**, we go to step V.

4. **Proceeding with the second step:**
- Assuming the tissue is made of **one type of cell**, we move to step IV.

5. **Identify characteristics of the tissue:**
- In step IV, we check if the cells of the tissue contain air cavities providing buoyancy or if the tissue provides mechanical strength and flexibility.
- If it contains air cavities, we label it as **R**.
- If it provides mechanical strength and flexibility, we label it as **S**.

6. **Proceeding with the third step:**
- If the tissue provides mechanical strength and flexibility, we identify it as **S**, which corresponds to the tissue found in young dicot stems and petioles.

7. **Now, let's consider the other option from step III:**
- If we had answered **no** to the first question (indicating the cells do not possess walls), we would go to step III.
- In step III, we check if the tissue lines the alveoli of lungs (which would be **P**) or if it forms a shock-absorbing cushion around vital organs (which would be **Q**).

8. **Finalizing the matches:**
- Based on the key, we can summarize:
- Tissue **R**: Parenchyma (buoyancy) - found in aquatic plants.
- Tissue **S**: Collenchyma (mechanical strength) - found in young stems.
- Tissue **P**: Simple squamous epithelium (lines alveoli).
- Tissue **Q**: Adipose tissue (shock-absorbing cushion).
- Tissue **T**: Xylem (conducts water).
- Tissue **U**: Phloem (conducts organic solutes).

### Conclusion:
The correct matches of tissue and their locations based on the dichotomous key are:
- **P**: Simple squamous epithelium (alveoli of lungs)
- **Q**: Adipose tissue (shock-absorbing cushion)
- **R**: Parenchyma (buoyancy)
- **S**: Collenchyma (mechanical strength)
- **T**: Xylem (conducts water)
- **U**: Phloem (conducts organic solutes)