7. (a) Name a part of a seed in which food for germination is stored - Leaving Cert Biology - Question 7 - 2014
Question 7
7.
(a) Name a part of a seed in which food for germination is stored.
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(ii) Name the three factors necessary for seeds to germina... show full transcript
Worked Solution & Example Answer:7. (a) Name a part of a seed in which food for germination is stored - Leaving Cert Biology - Question 7 - 2014
Step 1
Name a part of a seed in which food for germination is stored.
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Answer
Cotyledon or endosperm.
Step 2
Name the three factors necessary for seeds to germinate.
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Answer
Water.
Oxygen.
Suitable temperature (or warmth).
Step 3
At the start of the investigation to show digestive activity during germination the seeds were sterilised.
1. Why is this necessary?
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Answer
To kill or inhibit any microorganisms (or bacteria and fungi).
Step 4
2. How did you sterilise the seeds?
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Disinfectant or named disinfectant.
Step 5
Name the substance that is used as a medium on which to germinate the seeds.
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Answer
Agar.
Step 6
What substance, to be digested by the seeds, was added to the above medium?
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Answer
Starch or milk or protein.
Step 7
What control did you use in this demonstration?
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Answer
Same set-up and procedure with boiled seeds.
Step 8
How did you demonstrate that digestive activity had taken place?
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Answer
Iodine (or biuret) solution / negative result or described beneath seeds / indicates the absence of (or digestion of) starch (or protein).
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