Biology P&D Lab Germination

Adriann Straker Biology P&D Lab

Form 5 PLAIN

Observation: Sandra threw some corn seeds outside her window. One week later she noticed that seeds which fell in well-lit areas as well as those that fell in dark areas sprouted.

Hypothesis: The rate of germination is not affected by the amount of light the seed receives.

Aim: To prove that the rate of germination of that seed is not affected by the amount of light that it receives.

Apparatus: 2 flower pots, 6 corn seeds, soil, water, a measuring cylinder, ruler, lamp

Method: 1.Fill each flower pot with 60gcm3 of soil 2. Place a corn seed in each flower pot. 3. Label one of the flower pots P and the other Q. 4. Place the flower pot labelled Q under a lit lamp. 5. Place the flower pot labelled P in a dark area. 6. using a measuring cylinder, pour 15cm3 of water into each flower pot 7. This should be done for two weeks maximum. 8. be sure to measure and record the length of the sprouts daily.

Controlled Variables: Amount of soil in each flower pot, amount of water poured into each flower pot, amount of seeds in each flower pot

Manipulated Variable: Amount of light each pot receives. 1

Adriann Straker Biology P&D Lab

Form 5 PLAIN

Responding Variable: Growth of the seedling.

Expected Results: It is expected that the seeds in both flower pots P and Q should grow at the same rate. The seeds in Q should not grow faster than that of the seed in the flower pot labelled P.

Inferences: The hypothesis would be accepted if the seeds in both flower pots P and Q grew at the same rate. If either of the seeds in any of the flower pots grew at a faster rate than the other, the hypothesis would not be accepted.

Limitations: The amount of water may be inadequate and the sprouts may have been eaten by insects.

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