Biolab 2: Angiosperm Life Cycle

Question 1

angiosperms

Answer 1

plants that have flowers, and form seeds inside a protective chamber called ovary

Question 2

ovary

Answer 2

protective chamber where seeds are formed

Question 3

fruit

Answer 3

ovary later develops into after fertilization

organ designed uniquely for seed protection and dispersal

Question 4

sporophyte in angiospersm

Answer 4

sporophyte is the plant which we see growing and flowering

Question 5

gametophyte in angiosperm

Answer 5

has been reduced to a tiny group of cells that cannot exist independently of the sporophyte

Question 6

male gametophyte in angiosperm

Answer 6

pollen grain

Question 7

female gametophyte in angiosperm

Answer 7

embyro sac

Question 8

fertilization

Answer 8

union of the male cell with the egg

Question 9

pollination

Answer 9

transfer agents bringing the male unit to the stigma of the ovary

Question 10

pollen transfer

Answer 10

by insects, birds or the wind

Question 11

pedicel

Answer 11

the stalk taht bears the flower

Question 12

receptacle

Answer 12

top of the pedicle from which the floral parts arise

Question 13

complete flower

Answer 13

sepal, petal, stamen and carpel

Question 14

incomplete flower

Answer 14

flower that is missing any of the four important parts

Question 15

perfect flower

Answer 15

has both carpel and stamens

Question 16

imperfect flower

Answer 16

has only one a stamen or a carpel

Question 17

speals

Answer 17

usually green but not always

Question 18

fused sepals are called

Answer 18

calyx

Question 19

petals

Answer 19

most conspicuous parts, thin texxtured and often colored

Question 20

group of petals form

Answer 20

corolla

Question 21

perianth

Answer 21

the calyx and the corolla together

Question 22

know flower diagram

Answer 22

.

Question 23

stamen

Answer 23

consists of filament, and anther

Question 24

filament

Answer 24

slender stalk

Question 25

anther

Answer 25

at the top of the filament (pollens sac)

Question 26

pollen grain

Answer 26

powdery or sticky yellow

Question 27

carpel

Answer 27

in the center of the flower

Question 28

ovary

Answer 28

fat basal part

Question 29

locules

Answer 29

partial cavities in the carpel

Question 30

ovules

Answer 30

locules contain one or more small white bodies

Question 31

embryo sac

Answer 31

each ovule contains the female embryo sac which turns into an egg cell

Question 32

style

Answer 32

extending from the ovary , columnar part

Question 33

tip of the style is called

Answer 33

stigma, has a sticky surface which holds the pollen

Question 34

bilateral symmetry

Answer 34

petals are unequal in size and often fused together, gives flower left and right mirror image parts

Question 35

hefad

Answer 35

composite of many minature flowers

Question 36

ray flower

Answer 36

corolla looks like one petal

Question 37

disk flower

Answer 37

in which the corolla forms a tube of fused petal

Question 38

pappus

Answer 38

derived form the sepals

Question 39

pollen grain structure

Answer 39

contain 2 nuclei, the tube cell nucleus and the generative cell nucleus

Question 40

ovary structure

Answer 40

contains one or more ovules, undergo meiosis to form 4 haploid cells, where 1 survives, which is the functional megaspore, grows and undergos 3 mitotic divisons to produce 1 large cells with 8 haploid nuclei which forms the embryo sac

Question 41

mature embryo sac contains

Answer 41

one egg nucleus, two flanking cells called synergids and one end of the embryo sac, and three antipodal cells at the other end and two polar nuclei, which share the large central cell

Question 42

fertilization

Answer 42

pollen grain deposited on the stigma, tube cell nucleus directs the growth of the pollen tube
grows through the material of the stigma down to the embryo sac, there one sperm fuses with the egg nucleus to form the diploid zygote
the other fuses with both polar nulcei to form the triploid endosperm
the double fertilization occurs only in angiosperms

Question 43

after fertilization , zygote develops into a

Answer 43

young embryo through mitotic divisions

Question 44

whole ovule matures into

Answer 44

seed , that contains an embryo in an arrested stage of development plus the outer layers of the ovule or testa

Question 45

radical

Answer 45

young root

Question 46

fruit

Answer 46

entire ovary containing one or more seeds mature into a fruit

Question 47

pericarp

Answer 47

fruit wall fused tightly to the testa

Question 48

pericarp

Answer 48

dark dense layer of tissue surrounding the corn kernel is the testa fused with the pericarp

Question 49

endosperm

Answer 49

nutrient rich tissue that provides nourishment for the developing embryo

Question 50

coleoptile

Answer 50

tissue that surrounds the embryonic shoot

Question 51

coleorhiza

Answer 51

tissue that surrounds the embryonic root

Question 52

pericparp into 3 layers

Answer 52

exocarp ( outer epiderms)
mesocarp (middle layer)
endocarp (inner layer)

Question 53

simple fruit

Answer 53

develop from a single ovary

Question 54

legume

Answer 54

simple fruit composed of one ovary ex. pea, bean

Question 55

grain

Answer 55

simple fruit dry fruit in which pericarp is fused to the seed coat

Question 56

berry

Answer 56

simple fleshy fruit ex. grape, tomato

Question 57

drupe

Answer 57

simple fruit with a stony endocarp ex. cherry, plum

Question 58

pome

Answer 58

simple fleshy fruit with other zone derived from the receptable and the core from the ovary ex. apple pear

Question 59

aggregate fruit

Answer 59

one that develops from the fusion of many seperate carpels

Question 60

multiple fruit

Answer 60

one that develops from ovaries of many flowers grouped together

Question 61

winged fruit

Answer 61

elm, maple, ash , dock

Question 62

sticky fruit

Answer 62

mistletoe, bits of ruit with seeds stickt o the brids beak

Question 63

plumed fruit and seeds

Answer 63

dandelion and goatsbeard, milkweed

Question 64

spiny fruit

Answer 64

cocklebur, burdock,