Question

You have installed an outdoor gas burning grill on your courtyard, next to your favourite Camellia bush. After the first few chilly nights of using your grill, you notice that your Camellia, which does not normally lose its leaves, is beginning to do so. Which of the following is the best explanation for what is happening?

• A. The bush is getting too warm next to your grill.
• B. Ethylene is a by-product of the gas you are burning and is causing senescence in your plant.
• C. Abscisic acid is a by-product of the gas you are burning and is causing senescence in your plant.
• D. The plant is a biennial and is molting.

Answer 1

The correct option is B Ethylene is a by-product of the gas you are burning and is causing senescence in your plant.

Ethylene gas is one of the by-products of burning of gas grill. It promotes senescence and so, the grill must not be kept close to plants.