Seed Germination and Plant Growth

Plant Height and Growth

What is stored inside a seed when it is dormant?

  • Embryo
  • Nutrients

What happens once the seed imbibes (absorbs) water?

  • The plant starts to grow and move down into the soil that they are growing in.

Xylem and Phloem of Corn

Difference between monocots and dicot germination?

  • Monocots have seeds that are one piece like corn and dicots have seeds that can be easily in half like beans.
  • Monocots have flower parts like petals in multiples of 3's while dicots have them usually in multiples of 4 or 5.

Are beans and corns vascular or nonvascular, angiosperms and gymnosperms?

  • Corn- Vascular
  • Corn- Angiosperm
  • Bean- Vascular
  • Bean- Angiosperms

Xylem and Phloem of a Bean

Does the presence of light affect germination?

Yes the presence of light affects germination, if there is no light then the plant couldn't create ATP and NADPH which causes the plant to produce energy or it would not be able to grow.

Why do some seeds not germinate at all?

  • They are missing vital nutrient that they need to grow.
  • No sunlight or type of light.
  • If the seed does not consume water then they cannot grow.
  • Some plants produce varying number of seeds that lack embryos, called empty seeds.

Why do some germinated seeds die when transplanted into soil?

  • They cannot adapt to the new soil they have been put into.

What are the vital nutrients for seed germination?

  • Macronutrients can be broken into two groups, primary and secondary nutrients
  • The primary nutrients are nitrogen, phosphorus, and potassium.
  • These major nutrients usually are lacking from the soil first because plants use large amounts for their growth and survival.

How does gravitropism affect germinated seeds?

  • The root goes down through the dirt because of gravity.

Response to hormones, light, and gravity?

  • Gravitation pull makes the plant grow towards the light because that it were the energy to make the plant grow comes from.
  • The hormones Auxin, Cytokinins, Gibberellins, Abscisic Acid, and Ethylene all help the plant grow in separate but the same ways, they also help each other.
  • Plants need light to make ATP and ATP then stays in the plant during the dark light to keep the plant alive.

Bean and Corn Roots.

Bean Progress

Corn Progress

Changes in your plant growth.

  • Plant grew larger when I added fertilizer.
  • Plants grew towards the light when turned around.

Stresses

  • Salt
  • Heat
  • Col
  • Flooding
  • Drought

What I learned from the experience?

I learned that you can alter your plant to grow how you want it to, you can also change the direction you want to grow you plant. I also learned the stresses that plants have. I learned that beans are dicots and corns are monocots and how each of them grow in different ways. The gravitation pull has a huge affect on the way plants grow, and how they grow.