Turgor pressure helps a seed in which of the following ways?

• A. By maintaining cell rigidity and supporting seedling growth
• B. By directly providing energy for cellular respiration
• C. By increasing the rate of photosynthesis in the seed
• D. By transporting oxygen into the seed cells

Answer: (A)

Verified step by step guidance

1. Understand the concept of turgor pressure: Turgor pressure is the pressure exerted by water inside the cell against the cell wall. It is a critical factor in maintaining the rigidity of plant cells and supporting structural integrity.
2. Analyze the role of turgor pressure in seeds: In seeds and seedlings, turgor pressure helps maintain cell rigidity, which is essential for the growth and development of the seedling as it emerges and establishes itself.
3. Eliminate incorrect options: Turgor pressure does not directly provide energy for cellular respiration, as energy is derived from the breakdown of glucose molecules. Similarly, turgor pressure does not increase the rate of photosynthesis, as photosynthesis depends on light, chlorophyll, and other factors. Lastly, turgor pressure does not transport oxygen into seed cells; oxygen transport occurs through diffusion.
4. Focus on the correct function: Turgor pressure supports seedling growth by maintaining cell rigidity, which allows the cells to expand and the seedling to grow upright and strong.
5. Conclude the reasoning: Based on the analysis, the correct answer is 'By maintaining cell rigidity and supporting seedling growth,' as this aligns with the biological function of turgor pressure in plant cells.