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Plant Science > Lab - Monocots - grasses > Flashcards

Lab - Monocots - grasses Flashcards

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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?

A

Radical

22
Q

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

A

the root

23
Q

What type of corn do we make with popcorn

A

pop-corn

24
Q

What type of corn do we eat on a cobb

A

dentcorn

25
Q

why is it called dentcorn

A
26
Q

What are our 4 types of corn

A

Pop - lots of hard endosperm
Dent - lots of soft starchy endosperm
Floury - lots of flowery endosperm
Flint - hard endosperm

27
Q

What part of the kernel would likely increase in size in high oil corn

A

Embryo

28
Q

What are the first stages in the life cycle of a plant?

A

Germination and emergence

29
Q

What is the beginning growth of the seed into a plant

A

Germination

30
Q

What is the stage when a plant first becomes visible above the soil surface

A

Emergence

31
Q

What are the 3 environmental requirements for germination?

A

Moisture
Temperature - Heat in corn
Oxygen

32
Q

What type of root does corn have?

A

a fibrous root

33
Q

(T/F) Corns primary root is called a tap root

A

FALSE
- tap roots are only found in broadleaf plants

34
Q

What is an elongation of the stem which is above before you reach the root called?
What is the part just below soil line?

A

Mesocotyl

Shoot Apex

35
Q

What part of the kernel turns into the shoot apex?

A

The growing point withing the plumule

36
Q

Which foliar leaf comes from the center of the foliar leaf in the stem (1st or 2nd)

A

2ND

37
Q

What happens to the coleoptile after the plant emerges

A

falls off/ denigrates

38
Q

The tip of the first true leaf can be described as…

A

Rounded

39
Q

The emergence of this plant has been due primarily to the elongation of the…?

A

Mesocotyl

40
Q

The shoot apex or apical meristem is now ______ the soil surface?

A

0-1 inches above

41
Q

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?

A

Not negatively affect the plants growth or grain yield.

42
Q

What is silking?

A

the flowering of the plant

43
Q

The first two or tree leaves from the bottom from emergence stage in an intermediate plant are…?

A

disintegrated from because of root growth and stem expansion.

44
Q

The major root system of the intermediate plant is now developing from the:

A

Adventitious roots

45
Q

The above ground adventitious roots at the base of the plant are called?

A

grace roots

46
Q

What function do these roots serve for the developing corn plant?

A

Support/ anchoring, water and nutrient uptake

47
Q

What are the parts of the leaf

A

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
Q

is there always a leaf next to every node in a monocot

A

Yes

49
Q

What has now fully formed in place of the shoot apex in an intermediate plant

A

tassel

50
Q

What has now formed in place of some of the axillary meristems in an intermediate plant

A

Ear shoot

Plant Science (8 decks)

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