Dispersal of fruits and seeds, and germination
Answers are for parents and teachers.
1
Germinate a bean seed at home, observe it daily and draw it.
First swelling, then radicle, then stem and cotyledon leaves.
2
Dispersal table: method β adaptation β example (4 methods).
Wind β fluff/wings β poplar, elm; water β waterproof coat β water lily; animal β spines/juicy β birds; self β splitting β balsam.
3
30 seeds were sown and 24 sprouted. What is the germination rate in percent?
80
4
Why should seeds be sown at a suitable temperature rather than in cold ground? Write 2β3 sentences.
At low temperature life processes slow, seeds do not sprout or rot; at suitable warmth they germinate fast and evenly.
5
Ask your family how sumalak is prepared and write which stage of wheat germination is used.
Wheat grains are soaked and sprouted; the sprouts in which starch has turned to sugar are used.