Lab - Monocots - grasses Flashcards

1
Q

Can you list some members of the grass family other than corn

A

wheat, barley, oats, Kentucky bluegrass, foxtail, barnyard grass

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2
Q

Grasses belong to a subclass of plants termed monocots. monocots are called such because their seeds contain ________ cotyledon.

A

ONE

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3
Q

Use of corn in Livestock feed

A

Corn silage, cracked corn, dry corn, powdered/crushed corn, grains, sweet feeds

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4
Q

Use of corn in Human food

A

Popcorn, corn syrup, corn flower, processed meat filler

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5
Q

Corn in industrial use

A

Ethanol

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6
Q

What is the silk scar?

A

Where the kernel is attached to the silk

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7
Q

What is the outermost layer of the skin on corn

A

Peri carp
Testa
Aleuerone

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8
Q

What is the shaded area on the page

A

The embryo

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9
Q

What is the dark yellow in a live corn

A

the endosperm, where the energy is stored and used
carbohydrates

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10
Q

What is the black layer in the bottom of the embryo

A

an indicator the corn has reached full maturity

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11
Q

what is the lighter colored yellow in a live corn

A

Soft (starch) endosperm

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12
Q

What is the dot in the center of the embryo?

A

The lateral seminal roots

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13
Q

What is the growing point of the corn kernel

A

The plumule

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14
Q

What is the difference between the Coleoptile and the Coleorhiza?

A

The Coleoptile is distal and protects the plumule while the Coleorhiza is proximal and protects the radical

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15
Q

Grasses form a special fruit and seed structure called?

A

Caryopsis or kernel

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16
Q

E

A

Endosperm

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17
Q

C

A

Pericarp

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18
Q

A

A

Coleoptile

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19
Q

B

A

Radical

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20
Q

D

A

Embryo

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21
Q

When a corn germinated, what is the first part we see?

22
Q

What does a radical become after germination forming into a regular plant

23
Q

What type of corn do we make with popcorn

24
Q

What type of corn do we eat on a cobb

25
why is it called dentcorn
26
What are our 4 types of corn
Pop - lots of hard endosperm Dent - lots of soft starchy endosperm Floury - lots of flowery endosperm Flint - hard endosperm
27
What part of the kernel would likely increase in size in high oil corn
Embryo
28
What are the first stages in the life cycle of a plant?
Germination and emergence
29
What is the beginning growth of the seed into a plant
Germination
30
What is the stage when a plant first becomes visible above the soil surface
Emergence
31
What are the 3 environmental requirements for germination?
Moisture Temperature - Heat in corn Oxygen
32
What type of root does corn have?
a fibrous root
33
(T/F) Corns primary root is called a tap root
FALSE - tap roots are only found in broadleaf plants
34
What is an elongation of the stem which is above before you reach the root called? What is the part just below soil line?
Mesocotyl Shoot Apex
35
What part of the kernel turns into the shoot apex?
The growing point withing the plumule
36
Which foliar leaf comes from the center of the foliar leaf in the stem (1st or 2nd)
2ND
37
What happens to the coleoptile after the plant emerges
falls off/ denigrates
38
The tip of the first true leaf can be described as...
Rounded
39
The emergence of this plant has been due primarily to the elongation of the...?
Mesocotyl
40
The shoot apex or apical meristem is now ______ the soil surface?
0-1 inches above
41
What will happen to the plant if there is removal or destruction of all or part of the fully emerged leaves at the emergence stage?
Not negatively affect the plants growth or grain yield.
42
What is silking?
the flowering of the plant
43
The first two or tree leaves from the bottom from emergence stage in an intermediate plant are...?
disintegrated from because of root growth and stem expansion.
44
The major root system of the intermediate plant is now developing from the:
Adventitious roots
45
The above ground adventitious roots at the base of the plant are called?
grace roots
46
What function do these roots serve for the developing corn plant?
Support/ anchoring, water and nutrient uptake
47
What are the parts of the leaf
Leaf lamina - regular leaf (blade) collar region - dark part below the lamina of the leaf Sheath - the part attached to the stem, below the collar.
48
is there always a leaf next to every node in a monocot
Yes
49
What has now fully formed in place of the shoot apex in an intermediate plant
tassel
50
What has now formed in place of some of the axillary meristems in an intermediate plant
Ear shoot