It has become a fashion in recent years to use tablets as food supplements. In western countries, a large number of products in the form of tablets and syrups are available in the market consumption has been claimed to increase the performance of athletes and race horses

Options

A. aril, latex, resin
B. pollen, pollen, pollen
C. pollen, megaspore, pills
D. integument, endothelial, exudation

Answer

### Step-by-Step Solution:

1. **Understanding the Context**: The question discusses the trend of using tablets and syrups as food supplements, particularly in Western countries, claiming to enhance athletic performance.

2. **Identifying Key Components**: The focus is on the role of pollen grains in the context of food supplements. Pollen grains are known to be rich in nutrients and are often marketed for their health benefits.

3. **Recognizing the Role of Pollen Grains**: Pollen grains represent the male gametophyte in flowering plants (angiosperms) and are crucial for the process of sexual reproduction. They are produced in the anther of the stamen during microsporogenesis.

4. **Structure of Pollen Grains**: Pollen grains consist of two cells: a large vegetative cell (nutrient-rich) and a generative cell (which will form male gametes). The outer wall of the pollen grain is made of sporopollenin, a highly resistant substance that protects the grain.

5. **Nutritional Value**: Due to their nutrient content, pollen grains are used as food supplements. The question implies that these supplements are believed to improve performance in athletes and racehorses.

6. **Evaluating Options**: The options provided in the question likely relate to different plant materials. The correct answer would be the one that specifically mentions pollen, as it is the only one directly associated with the food supplements discussed.

7. **Conclusion**: Based on the analysis, the correct answer is the option that mentions pollen grains, as they are the only relevant food supplement in the context of the question.