Lab 4: Plant Growth And Development

Front 1

After double fertilization, an ovule develops into a

Back 1

seed.

Front 2

The integuments of an ovule develop into the

Back 2

seed coat.

Front 3

Function of endosperm in bean seed

Back 3

nutritive tissue for the developing embryo

Front 4

in bean seed

The seedling parts are pre-formed in

Back 4

a seed.

Front 5

seed coat morphology in bean seed

Back 5

light brown outside covering

covers all but hilum

Front 6

hilum morphology in bean seed

Back 6

concave portion

a scar left where the seed was attached to its stalk

one end has micropyle

Front 7

micropyle morphology & function in bean seed

Back 7

small "hole" on one end of hilum

the opening in the integuments through which the pollen tube entered the ovule

Front 8

Function of two cotyledons in bean seed

Back 8

provide food for been seedling during early growth

Front 9

Some eudicots, including bean, do not have

Back 9

endosperm in the mature seed

because endosperm nutrients were completely absorbed by the cotyledons

Front 10

embryo of bean seed consists of

Back 10

cotyledons and "miniature plant" they are attached to

Front 11

Cotyledons referred as

Back 11

"seed leaves"

Front 12

At one end of the bean seed when you open the cotyledons is

Back 12

two undeveloped foliage leaves and an extremely tiny part of the embryonic stem with an apical meristem

Front 13

embryonic stem consists of

Back 13

epicotyl-above the point of attachment of the cotyledons

hypocotyl-below the point of attachment to the cotyledons

radicle-base of hypocotyl

Front 14

In the bean Seedling, the radicle develops into

Back 14

roots

Front 15

As the bean seed germinated, what happened to the hypocotyl? In the bean Seedling

Back 15

The hypocotyl formed a hook that then straightened out and pulled the cotyledons and epicotyl above ground.

Front 16

Why was it evolutionarily efficient for the hypocotyl to bring the parts above ground? In the bean Seedling

Back 16

This protected the delicate apical meristem at the tip of the epicotyl.

Front 17

In the bean Seedling, the pale green cotyledons are retained for about 10 days to...

Back 17

supply the developing seedling nutrients.

Front 18

Corn seed

Outside coat is

Back 18

the wall of the fruit

Front 19

Corn seed

The wall of the fruit is tightly fused to

Back 19

the seed coat

Front 20

Corn seed

Endosperm is present when?

Back 20

in mature seeds

Front 21

Corn seed

The endosperm has high content of

Back 21

starch

Front 22

Corn seed

What lies next to the endosperm and what is its function?

Back 22

the single cotyledon

functions to digest nutrients from the endosperm and pass them to the other parts of the developing embryo

Front 23

Corn seedling

After germination, does the cotyledon remain below ground or is it raised above ground?

Back 23

It remains underground.

Front 24

Corn seedling

Coleoptile morphology and function

Back 24

light pink

protective tubular sheath

Front 25

Corn seedling

What happened to the shoot when it reached above the soil?

Back 25

It broke through the coleoptile (protective tubular sheath)

Front 26

Corn seedling

What should have expanded from the shoot?

Back 26

atleast one foliage leaf

Front 27

Roots developed from

Back 27

the radicle