Welcome to the Quiz!

This quiz contains 9 questions from a mix of 1 subtopics.

How can the germination of gibberellin-deficient seeds be restored?

by applying gibberellins externally

by exposing the seeds to light

by applying water to the seeds

by removing the aleurone layer

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How can shorter stems, resulting from reduced gibberellin synthesis, be beneficial for plants?

they make plants less vulnerable to weather damage and easier to harvest

they make plants more attractive to pollinators

they make plants easier to harvest

they make plants more vulnerable to weather damage

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What is the specific effect of gibberellins on plant stems?

increasing the number of leaves

decreasing the length of internodes

decreasing the number of leaves

increasing the length of internodes

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How do the sugars produced by starch hydrolysis help the embryo?

they activate other enzymes

they prevent water absorption

they inhibit further gibberellin synthesis

they provide energy and support growth

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What do amylase enzymes hydrolyse during germination?

lipids into fatty acids

cellulose into glucose

starch into maltose

proteins into amino acids

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Which enzymes are synthesised in response to gibberellins?

amylases and maltases

lipases and proteases

xylanases and ligninases

cellulases and pectinases

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What triggers the synthesis of gibberellins in a seed?

exposure to light

presence of amylase enzymes

absorption of water

reduction in water levels

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What does the endosperm of a seed contain before germination?

starch

hemicellulose

cellulose

glucose

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Which structure within a seed is the developing plant?

starch granules

aleurone layer

endosperm

embryo

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