Ask a New Question
Menu

Susan has just moved into a new house. For some reason, she cannot get the grass to grow in her yard. She decides to grow small amounts of grass inside her house as part of an experiment. The first group of grass is exposed to a light intensity of 400. The second group is exposed to a light intensity of 1200.


Using the graph, which of the following should be expected from Susan’s two groups of plants?

The plants at a light intensity of 1200 will produce more oxygen than the plants at 400.
The plants at a light intensity of 1200 will perform only stage 1 of photosynthesis.
The plants at a light intensity of 400 will produce more glucose than the plants at 1200.
The plants at a light intensity of 400 will grow more quickly than the plants at 1200.

1 answer

Based on the light intensities provided (400 and 1200), the expectation is that the plants exposed to the higher light intensity (1200) will likely engage in photosynthesis more efficiently and potentially produce more oxygen than those at the lower light intensity (400).

Let's analyze each statement:

  1. The plants at a light intensity of 1200 will produce more oxygen than the plants at 400. – This statement is likely true, as higher light intensity generally boosts photosynthesis rates, leading to higher oxygen production.

  2. The plants at a light intensity of 1200 will perform only stage 1 of photosynthesis. – This statement is misleading; plants at 1200 intensity would perform both stages of photosynthesis, provided that other conditions (like CO2 and water) are adequate.

  3. The plants at a light intensity of 400 will produce more glucose than the plants at 1200. – This is unlikely, as lower light intensity usually results in reduced glucose production due to lower rates of photosynthesis.

  4. The plants at a light intensity of 400 will grow more quickly than the plants at 1200. – Generally, greater light intensity supports faster growth rates, assuming other conditions are equal.

Based on this evaluation, the first statement is the most accurate: The plants at a light intensity of 1200 will produce more oxygen than the plants at 400.