Seeds of some plants germinate immediate | Class 11 Biology Chapter Morphology of Flowering Plants, Morphology of Flowering Plants NCERT Solutions

Question:

Seeds of some plants germinate immediately after shedding from the plants while in other plants they require a period of rest before
germination. The later phenomena is called as dormancy. Give the reasons for seed dormancy and some methods to break it.

Answer:

Reasons for seed dormancy:

  1. Hard seed coat.
  2. Impermeable layer prevent uptake of water.
  3. Immature embryo.
  4. ABA inhibits growth and delays germination

Methods to break seed dormancy:

  1. Maturation of embryo
  2. Weakening and decomposition of seed coat
  3. Inactivation of growth inhibitors due to heat or cold treatment.
  4. Physical dormancy is also broken when the seed passes through the gut of an animal.


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Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 8: Seeds of some plants germinate immediately after shedding from the plants while in other plants they....