Feetilisation In Plants Flashcards
(14 cards)
What is the first step in fertilisation in plants?
Pollen lands on stigma from wind or insects
This initiates the process of fertilisation.
What grows out of the pollen grain during fertilisation?
Pollen tube
The pollen tube grows down the style to reach the ovary.
Where does the male gamete move during fertilisation?
Down the tube to the female gamete in the ovary
This movement is crucial for fertilisation to occur.
What develops around the seed after fertilisation?
Fruit
The ovary develops a fruit to protect and nourish the seed.
What is the first step in the practical investigation of seed germination?
Take 4 tubes and put cotton wool in all 4
This serves as a base for the seeds.
How many seeds should be placed on top of cotton wool in the germination experiment?
10 seeds
This ensures a consistent number of seeds for observation.
What is the setup for tube 1 in the germination experiment?
H2O, O2, room temperature
This setup is expected to support germination.
What conditions are used in tube 2 of the germination experiment?
H2O, O2, low temperature
Low temperature may inhibit germination.
What is the setup for tube 3 in the seed germination experiment?
H2O, No O2, room temperature
This setup tests the necessity of oxygen for germination.
What conditions are set up in tube 4 of the germination experiment?
No H2O, O2, room temperature
Lack of water should prevent germination.
What is used to prevent oxygen from getting into the tubes?
Oil
This helps to control the oxygen variable in the experiment.
How long should the tubes be left for observation?
A few days
This allows time for any potential germination to occur.
What is the expected observation if the conditions are right during germination?
Germination
Proper conditions should lead to the sprouting of seeds.
