Biology Topic Practice

Gibberellins and Ethylene

Beyond auxins, other hormones play crucial roles in seed germination, fruit ripening, and cell division.

Which hormone is used widely in the food industry to ripen bananas?

What is Gibberellins and Ethylene?

"Gibberellins are plant hormones that regulate various developmental processes; Ethylene is a gaseous plant hormone involved in ripening."

Question 1

Which plant response is explained by auxin causing unequal growth in a shoot?

Question 2

In a plant shoot, what happens to auxin when light shines on one side?

Question 3

In a plant shoot, what happens to auxin when light shines on one side?

Other Plant Hormones

Gibberellins: Important for initiating seed germination.

Ethylene: A gas that controls cell division and fruit ripening.

These hormones are used commercially to control when crops are ready for sale.

Exam Tip

If you put a ripe banana with green apples, the ethylene from the banana will ripen the apples faster.

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