IGCSE /Grade 5
Science MCQ Based On Germination of seeds
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IGCSE Grade 5 Science Germination of seeds
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During seed dormancy: The seed coat resistant to water and gases, restricts water-uptake and oxygen exchange. The seeds with immature embryo do not germinate. Seeds which contain plant growth regulators inhibit seed germination. Some seeds require more time for their germination.
Water plays an important role in seed germination. It provides necessary hydration to a plant for vital activities of protoplasm, dissolved oxygen for the growing embryo, softens the seed coats and increases the seed permeability.
Cross out the incorrect option.
List the part of seeds and tick the option which doesn't match.
The process by which an organism emerges from a seed or spore is known as germination.
Outermost covering is protective covering of seed,
For seed germination, it requires a moderate temperature of around 25-30°C.
Think of the gas which is an important source of energy for the growth of seed.
The three parts of the seeds are seed coat, cotyledons and embryo.
Imbibition is the first step where water fills the seed.
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