The diagram below represents a maize seedling.

​The diagram below represents a maize seedling.

​a) Name the structure labeled A and C   (2mks)

• A – Coleoptile
• B – Remaining of seed / seed.

b) State the functions of parts labeled A, B and C.            (3mks)

• ​A - Protects the delicate plumule as it pushes through the soil during germination.
• B – Contains stored food which is hydrolyzed and used by the germinating seed / seedling before the seedling starts to photosynthesize.
•  C
  – Anchors the seedling.
  - Absorbs water and mineral ions.

​c) Name the type of germination exhibited by maize            (1mk)

​Hypogeal germination

​d) Name two conditions necessary for seed germination other than water and oxygen.   (1mk)

• Optimum temperature / warmth.
• Growth hormones.
• Viability of seed
• Enzymes

​e) What is the role of oxygen in seed germination?      (1mk)

​It oxidizes the stored food in the seed to give energy for growth/synthesis of new materials;