06.1 Name process X - AQA - GCSE Biology - Question 6 - 2022 - Paper 1

The process by which water is absorbed into plant roots is osmosis, where water moves from an area of higher concentration to an area of lower concentration across a semi-permeable membrane.

1. Water is essential for photosynthesis, as it provides the hydrogen needed to create glucose.

2. Water provides support to plants through turgor pressure, which keeps them upright and maintains their structure.

To find how many times more efficient the cow is than the grass, we first need the efficiency of the grass:

1. Grass energy conversion efficiency can be calculated using the formula: $\text{Energy Conversion Efficiency} = \frac{\text{Energy Used for Growth}}{\text{Energy Input}} \times 100$ For grass, this is: $\frac{21800}{1700000} \times 100 = 1.282\%$

2. Now, we calculate the comparative efficiency of the cow: $\text{Comparative Efficiency} = \frac{\text{Cow Efficiency}}{\text{Grass Efficiency}} = \frac{4.098}{1.282} \approx 3.196$

Thus, the cow is approximately 3.20 times more efficient than the grass.

1. Less energy is lost as heat when cows are kept indoors, leading to more efficient energy use for growth and production.

2. Indoor rearing allows for controlled diet and less energy lost in movement, increasing overall energy efficiency.

1. Increased spread of disease can occur in confined spaces, as diseases can transmit more easily among animals.

2. The requirement for extra energy use in heating and lighting can result in higher operational costs.