A brief summary of how Pisium sativum seeds germinate (in the dark? In soil? etc
ID: 97076 • Letter: A
Question
A brief summary of how Pisium sativum seeds germinate (in the dark? In soil? etc.) and
how its seedlings develop into mature plants. In your description of the early development
of pea seedlings, please include the specific roles/purpose of the root system formation,
formation and unfolding of the hook at top of a developing seedling, stem elongation, and
leaf expansion/enlargement. (You may need to consult an external credible source for this;
if you are in the 211G lecture course your course textbook will be a good source of this).
Connect these with the cellular process that captures light and stores it in carbohydrates
(what is it called?)
Explanation / Answer
Pisum sativum seeds follow hypogeal germination. The seeds or cotyledons germinate under the soil. This is an evolutionary mechanism that protects it from grazing by animals and from adverse environmental conditions. Here, cotyledons play no role in germination. There is a greater elongation of epicotyledon and their tips are curved to protect the plumule from friction. Radicles branch out from the seed and they extensively branch out forming the root system. The energy is primarily derived from endosperm.
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