An example of CAM plant is

Options

A. Black Nightshade (Salanum nigrum)
B. Lemon Grass (Cymbopogon flexuosus)
C. Sugarbeet (Beta vulgaris)
D. Snake Plant (Sanseveria trifasciate).

Answer

**Step-by-Step Solution:**

1. **Understanding CAM Plants**: CAM stands for Crassulacean Acid Metabolism. This is a type of photosynthesis that allows plants to adapt to arid (dry) environments.

2. **Characteristics of CAM Plants**: CAM plants typically have their stomata (the small openings on leaves) closed during the day to minimize water loss through evaporation and transpiration. Instead, they open their stomata at night to take in carbon dioxide (CO2).

3. **Storage of CO2**: The CO2 that is collected at night is stored in the vacuoles of the plant cells in the form of organic acids, primarily carbonic acid and malic acid.

4. **Photosynthesis Process**: During the day, when the stomata are closed, the stored acids are transported to the chloroplasts where they are converted into sugars through photosynthesis.

5. **Identifying Examples of CAM Plants**: Common examples of CAM plants include epiphytes like orchids and bromeliads, succulent xerophytes like cacti and euphorbia, and hemiepiphytes like the snake plant.

6. **Choosing the Correct Answer**: Among the options provided (black nightshade, lemongrass, sugar beet, snake plant), the snake plant is identified as a CAM plant.

**Final Answer**: The example of a CAM plant is the **snake plant**.

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