Lab - Monocots - grasses

Question 1

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

Answer 1

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

Question 2

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

Answer 2

ONE

Question 3

Use of corn in Livestock feed

Answer 3

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

Question 4

Use of corn in Human food

Answer 4

Popcorn, corn syrup, corn flower, processed meat filler

Question 5

Corn in industrial use

Answer 5

Ethanol

Question 6

What is the silk scar?

Answer 6

Where the kernel is attached to the silk

Question 7

What is the outermost layer of the skin on corn

Answer 7

Peri carp
Testa
Aleuerone

Question 8

What is the shaded area on the page

Answer 8

The embryo

Question 9

What is the dark yellow in a live corn

Answer 9

the endosperm, where the energy is stored and used
carbohydrates

Question 10

What is the black layer in the bottom of the embryo

Answer 10

an indicator the corn has reached full maturity

Question 11

what is the lighter colored yellow in a live corn

Answer 11

Soft (starch) endosperm

Question 12

What is the dot in the center of the embryo?

Answer 12

The lateral seminal roots

Question 13

What is the growing point of the corn kernel

Answer 13

The plumule

Question 14

What is the difference between the Coleoptile and the Coleorhiza?

Answer 14

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

Question 15

Grasses form a special fruit and seed structure called?

Answer 15

Caryopsis or kernel

Question 16

E

Answer 16

Endosperm

Question 17

C

Answer 17

Pericarp

Question 18

A

Answer 18

Coleoptile

Question 19

B

Answer 19

Radical

Question 20

D

Answer 20

Embryo

Question 21

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

Answer 21

Radical

Question 22

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

Answer 22

the root

Question 23

What type of corn do we make with popcorn

Answer 23

pop-corn

Question 24

What type of corn do we eat on a cobb

Answer 24

dentcorn

Question 25

why is it called dentcorn

Question 26

What are our 4 types of corn

Answer 26

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

Question 27

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

Answer 27

Embryo

Question 28

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

Answer 28

Germination and emergence

Question 29

What is the beginning growth of the seed into a plant

Answer 29

Germination

Question 30

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

Answer 30

Emergence

Question 31

What are the 3 environmental requirements for germination?

Answer 31

Moisture Temperature - Heat in corn Oxygen

Question 32

What type of root does corn have?

Answer 32

a fibrous root

Question 33

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

Answer 33

FALSE - tap roots are only found in broadleaf plants

Question 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?

Answer 34

Mesocotyl Shoot Apex

Question 35

What part of the kernel turns into the shoot apex?

Answer 35

The growing point withing the plumule

Question 36

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

Answer 36

2ND

Question 37

What happens to the coleoptile after the plant emerges

Answer 37

falls off/ denigrates

Question 38

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

Answer 38

Rounded

Question 39

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

Answer 39

Mesocotyl

Question 40

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

Answer 40

0-1 inches above

Question 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?

Answer 41

Not negatively affect the plants growth or grain yield.

Question 42

What is silking?

Answer 42

the flowering of the plant

Question 43

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

Answer 43

disintegrated from because of root growth and stem expansion.

Question 44

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

Answer 44

Adventitious roots

Question 45

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

Answer 45

grace roots

Question 46

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

Answer 46

Support/ anchoring, water and nutrient uptake

Question 47

What are the parts of the leaf

Answer 47

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.

Question 48

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

Answer 48

Yes

Question 49

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

Answer 49

tassel

Question 50

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

Answer 50

Ear shoot