Germination
Roots & Reproduction
Function & Cycles
Reproductive Stages
Vegetative Stages
200

____________ is the renewal of enzymatic activity that results in cell division and elongation, ultimately emergence through the seed coat.

What is germination?

200

Corn is a monoecious plant, meaning it has both male and female parts on one plant. What are the male and female parts?

What are the tassel and the ear? 

200

What does GDD stand for?

What is a growing degree day? (unit)

200

At this stage, the corn is ready to be harvested. 

What is R6 Maturity?

200

How can you determine which vegetative stage the corn plant is in?

What is counting the leaf collars?

400

What is the first step in germination?

What is water absorption?
400

These roots become the main root system of the plant.

What are the nodal roots? 

400

What is the function of the leaf collar?

What is a transition between the blade and the sheath portion?

400

At this stage kernel moisture is reduced and the blunt end of the kernel is starting to fall inward.

What is the R5 dent stage?

400

Vegetative stages are ceased at this stage, where the base of the tassel is visible. 

What is the VT stage?

600
At this point, the seed is at rest until the conditions are desirable to begin germination.

What is quiescence? 

600

Corn is typically __________ pollinated; only 5% is self pollinated. 

What is cross?

600

What is the green pigment in leaves that aid in the process of photosynthesis? 

What is chlorophyll? 

600
This is the beginning of the reproductive stages, where each kernel begins to develop silks that elongate.

What is R1 Silk stage?

600

The shape of the leaf at this stage is round and eventually dies off.

What is V1?

800

What % moisture is needed in the field in order for a corn seed to begin germination? 

What is 30%?

800

_________ seed corn is the offspring of two pure genetic lines of corn, also known as inbred parents.

What is hybrid?

800

Elongation of stalk tissues occurs at which stage(s)?

What is between V4 and V5?
800

At this reproductive stage, kernels are small and white and filled with a clear liquid, and silks begin to darken in color. Kernels are about 85% water at this stage, which will gradually decrease until harvest. 

What is the R2 blister stage? 

800

This follows physiological maturity, forming a layer the tip of the kernel extending into the base.

What is the black layer?
1000
This is the act of the absorption of water of the seed, causing the radicle root to emerge as the first step.

What is imbibing?

1000

Which roots are responsible help sustain seedling development and are responsible for a short time for nutrient and water uptake post emergence?

What are the seminal roots?

1000

This is what happens when we store carbon to help reduce and prevent the warming of the carbon cycles. 

What is carbon sequestration? 

1000

At this reproductive stage, kernels are larger, showing a yellowish color on the outside, with the inside having a milky texture, which is caused by accumulating starch 

What is the R3, milk stage?

1000

What is the first vegatative stage and what happens at this stage?

What is VE (emergence) and the coleoptile pushes through the surface of the soil.

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