Lab 6

Question 1

pistil

Answer 1

female reproductive organ of a flower, typically comprising the stigma, style, and ovary

Question 2

ovary

Answer 2

part of the pistil that contains ovules and develops into a fruit after fertilization

Question 3

carpel

Answer 3

basic unit of the female reproductive organ in flowering plants, consisting of the ovary, style, and stigma

Question 4

ventral suture

Answer 4

seam or line along the ventral side of the ovary where it splits open during fruit maturation

Question 5

dorsal suture

Answer 5

seam or line along the dorsal side of the ovary where it splits open during fruit maturation

Question 6

septum

Answer 6

partition within the ovary that separates the locules

Question 7

seed

Answer 7

mature ovule containing the embryonic plant, stored food (endosperm or perisperm), and protective covering (seed coat)

Question 8

endosperm seed

Answer 8

seed containing endosperm, a tissue that provides nutrients to the developing embryo

Question 9

non-endospermic seed

Answer 9

seed lacking endosperm; nutrients for the developing embryo come from the cotyledons or perisperm

Question 10

perispermic seed

Answer 10

seed where the primary nutrient storage tissue is perisperm, which surrounds the embryo

Question 11

seed coat

Answer 11

protective outer covering of a seed

Question 12

aulerone layer

Answer 12

layer of protein-rich cells in the seed that provides nutrients to the developing embryo

Question 13

endosperm

Answer 13

nutrient-rich tissue surrounding the embryo in many seeds, formed by the fusion of sperm and central cell nuclei during double fertilization

Question 14

separation and secretion zone

Answer 14

region in the ovary where cells separate during fruit development and secretion of substances occurs

Question 15

embryo

Answer 15

early stage of development of a multicellular organism, typically contained within a seed

Question 16

suspensor

Answer 16

structure in the embryo of a plant that anchors it to the surrounding tissue and provides nutrients

Question 17

cotyledon

Answer 17

seed leaf of a plant embryo, which typically stores and provides nutrients to the developing seedling

Question 18

plumule

Answer 18

embryonic shoot located above the cotyledons in the seed

Question 19

epicotyl

Answer 19

portion of the plant embryo above the cotyledon(s) and below the first true leaves

Question 20

hypocotyl

Answer 20

portion of the plant embryo below the cotyledon(s) and above the root

Question 21

radicle

Answer 21

embryonic root of a plant embryo that emerges first during germination to anchor the plant and absorb nutrients from the soil

Question 22

scutellum

Answer 22

specialized cotyledon found in grass seeds that absorbs nutrients from the endosperm to nourish the developing embryo

Question 23

epiblast

Answer 23

a small flap-like outgrowth; formed by the remains of the second cotyledon which is not truly developed in monocots

Question 24

coleoptile

Answer 24

protective sheath covering the young shoot tip in grasses, aiding in the emergence of the shoot through the soil

Question 25

coleorhiza

Answer 25

protective covering surrounding the young root tip in grasses, facilitating the emergence of the root through the soil

Question 26

fruit

Answer 26

mature ovary of a flowering plant, containing seeds and often developing from the fertilized ovary

Question 27

pericarp

Answer 27

wall of a fruit, consisting of three layers: exocarp, mesocarp, and endocarp

Question 28

exocarp

Answer 28

outermost layer of the pericarp, often providing protection and sometimes contributing to fruit texture

Question 29

mesocarp

Answer 29

middle layer of the pericarp, often containing nutrients and contributing to fruit texture

Question 30

endocarp

Answer 30

innermost layer of the pericarp, often surrounding the seed and providing protection

Question 31

simple fruit

Answer 31

fruit formed from a single ovary

Question 32

accessory fruit

Answer 32

fruit formed from tissues other than the ovary, such as receptacle or floral parts

Question 33

dry dehiscent fruit

Answer 33

fruit that splits open at maturity to release seeds

Question 34

dry indehiscent fruit

Answer 34

fruit that does not split open at maturity to release seeds

Question 35

succulent fruit

Answer 35

fleshy fruit with a high water content, often consumed by animals for dispersal

Question 36

caryopsis

Answer 36

dry, one-seeded fruit where the seed coat is fused to the pericarp

Question 37

silique

Answer 37

type of dry fruit characteristic of the mustard family, consisting of two fused carpels that split open to release seeds

Question 38

pericarp fused with seed coat

Answer 38

fruit where the pericarp is tightly attached or fused with the seed coat, often seen in caryopsis-type fruits