The Conditions Necessary for Germination (Leaving Cert Agricultural Science): Flashcards

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The Conditions Necessary for Germination
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Definition of germination

Process where a dormant seed awakens and begins to grow into a new plant

Radicle

First root that emerges during germination

Three essential conditions for germination

Water, oxygen, and suitable temperature

Role of water in germination

Softens seed coat and triggers chemical reactions for growth

Role of oxygen in germination

Needed for respiration to release energy for growth

Role of temperature in germination

Enables chemical processes; most seeds need moderate temps

Test tube A setup (germination experiment)

Dry cotton wool, no water - tests if water is essential

Test tube C setup (germination experiment)

Boiled water + oil layer blocks oxygen - tests oxygen need

Test tube D in germination experiment

Control group with all 3 conditions - shows germination

Limiting factors in germination

If one essential condition missing, germination cannot occur

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