Module 1: Seed Structure and Development

Question 1

asymmetrical division of the zygote produces the larger ___ and smaller ___ cells.

Answer 1

basal and terminal

Question 2

transfers nutrients from parent plant; develops from basal cell

Answer 2

suspensor

Question 3

spherical-shaped embryo; develops from terminal cell

Answer 3

proembryo

Question 4

formed from integuments of the ovule

Answer 4

seed coat

Question 5

rudimentary leaf

Answer 5

cotyledon

Question 6

class of monocots

Answer 6

Liliopsida

Question 7

class of dicots

Answer 7

Magnoliopsida

Question 8

projects above cotyledons

Answer 8

epicotyl

Question 9

between cotyledon attatchment point and radicle

Answer 9

hypocotyl

Question 10

in ____, hypocotyl extends above the ground and grows into stem

Answer 10

dicots

Question 11

in ____, hypocotyl stays below ground

Answer 11

monocots

Question 12

composed of epicotyl, youyng leaves, and SAP

Answer 12

plumule

Question 13

region from which the root will develop

Answer 13

radicle

Question 14

single cotyledon in monocots; absorbs products of degraded endosperm

Answer 14

scutellum

Question 15

single layer of cells inside seed coat that surrounds embryo and endosperm

Answer 15

aleurone

Question 16

(fruit) single/fused carpels of a single ovary

Answer 16

simple fruits

Question 17

(fruit) numerous carpels all in one flower; mature carpels/ovaries fuse to form one fruit

Answer 17

aggregate fruits

Question 18

(fruit) develops from an inflorescence; matured ovaries of many flowers more or less united

Answer 18

multiple fruits

Question 19

(fruit) derived from different part of the flower such as receptacle or hypanthium

Answer 19

accessory fruits

Question 20

inability of intact viable seeds to complete germination under favorable environmental conditions

Answer 20

seed dormancy

Question 21

why do seeds become dormant?

Answer 21

1. presence of hard seed coat
2. contains immature embryo
3. due to growth inhibitory chemicals
4. has a chilling requirement

Question 22

sum of evbents that begin with hydration of the seed and culminate in emergence of the radicle

Answer 22

seed germination

Question 23

cotyledons emerge from soil together with plumule as hypocotyl elongates

Answer 23

epigeal germination

Question 24

cotyledons remain in soil while epicotyl elongates to push plumule out of soil

Answer 24

hypogeal germination

Question 25

(corn embryo) covers radicle

Answer 25

coleorhiza

Question 26

(corn embryo) covers shoot; elongation ceases upon exposure to light

Answer 26

coleoptile