Angiosperms 1

Question 1

Angiosperms are considered either ___ with a few exceptions

Answer 1

monocots
or (eu)dicots

Question 2

Monocots vs. Dicots

Answer 2

one cotyledon vs. two
cotyledons

Question 3

A flower is a ___ shoot that bears ___,
flower parts are attached to a ___

Answer 3

determinate, sporophylls, receptacle

Question 4

sepals

Answer 4

the outermost whorl of sterile
appendages, often green, collectively
form the calyx

Question 5

petals

Answer 5

the next whorl of sterile
appendages, often colorful, collectively
form the corolla

Question 6

what makes up the perianth

Answer 6

sepals and petals

Question 7

stamens

Answer 7

pollen-bearing parts of the
flower called the androecium; anthers
contains the microsporangia on a stalk
called the filament

Question 8

Carpels are the

Answer 8

ovule-bearing parts known
as the gynoecium, pollen
grains land on the stigma and grow
through the style to reach the ovules

Question 9

Fused carpels =

Answer 9

pistil

Question 10

gynoecium

Answer 10

gynoecium; contain the ovules
within a structure called an ovary;

Question 11

pollen grains land on the ___ and grow
through the ___ to reach the ovules

Answer 11

stigma, style

Question 12

Parts of a lily flower – sepals and petals look
the same and may be referred to as ___

Answer 12

tepals,

Question 13

Flowers may be clustered together to form
__

Answer 13

inflorescences

Question 14

(the stalk of an inflorescence is
called a ___)

Answer 14

peduncle

Question 15

complete flower

Answer 15

flowers have all four whorls

Question 16

incomplete flower

Answer 16

flowers lack any whorl (one or more)

Question 17

perfect

Answer 17

flowers have both stamens and carpels (bisexual)

Question 18

imperfect

Answer 18

flowers are lacking one or the other (i.e. unisexual;
separate male – staminate - and female - carpellate flowers)

Question 19

If staminate and carpellate flowers are found on one plant, the plant is called

Answer 19

monoecious

Question 20

If staminate and carpellate flowers are found on two different plants, the plants are

Answer 20

dioecious

Question 21

Oak flowers are (in)complete and (im)perfect, oak plants are mono/dioecious

Answer 21

Oak flowers are incomplete and imperfect;
oak plants are monoecious

Question 22

Within each carpel are one or more ___, which will become the seed; the area of attachment is called the ___ and the empty space is called the ___

Answer 22

ovules, placenta, locule

Question 23

locule ex

Answer 23

Question 23

The ovary wall matures to form a

Answer 23

fruit

Question 24

The arrangement of placentae determines the placentation type

Answer 24

apical, parietal, basal, axile, free central

Question 25

apical

Answer 25

on top

Question 26

basal

Answer 26

on bottom

Question 27

parietal

Answer 27

ovules borne on the ovary wall

Question 28

axile

Answer 28

ovules borne on a central column of tissue, there are as many locules as there are carpels

Question 29

free central

Answer 29

ovules borne on a central column of tissue not connected to the ovary wall

Question 30

what are whorls

Answer 30

Calyx (sepals), Corolla (petals), Androecium (stamens), and Gynoecium (pistil)

Question 31

superior ovaries

Answer 31

hypogynous flower, perigynous floer

Question 32

hypogynous

Answer 32

Perianth and stamens are free and attached below the ovary

Question 33

perigynous

Answer 33

Stamens and petals are adnate, forming a tube called a hypanthium

Question 34

inferior ovary

Answer 34

epigynous flower

Question 35

epigynous flower

Answer 35

Perianth and stamens arise from above the ovary (may or may not have a hypanthium) Superior ovaries Inferior ovary

Question 36

Floral parts may be fused with members of other whorls – this is called

Answer 36

adnation

Question 37

Floral parts may be fused – if parts of the same whorl are fused, it is called

Answer 37

connation

Question 38

Angiosperm microsporangia: ___ is the formation of microspores within the anthers

Answer 38

microsporogenesis

Question 39

1 anther contains 4 pollen sacs =

Answer 39

microsporangia

Question 40

Anther ___ releases pollen

Answer 40

dehiscence

Question 41

Mature pollen grains have an outer ___ composed of ___ and an ___ composed of ___

Answer 41

exine, sporopollenin, intine, cellulose and pectin

Question 42

Microgametogenesis is the development of the ___ to the 3 cell stage

Answer 42

microgametophyte

Question 43

2/3 of angiosperms shed pollen at the____, which forms the mature 3-celled microgametophyte

Answer 43

2-cell stage (immature microgametophyte)

Question 44

___ cell divides to form 2 sperm cells

Answer 44

Generative

Question 45

One-third of angiosperms shed pollen at the ___

Answer 45

3-cell stage

Question 46

___ and ___ culminate in the formation of an egg and polar nuclei

Answer 46

Megasporogenesis, megagametogenesis

Question 47

Megasporocyte (2n) undergoes ___ to produce ___; ___ degenerate

Answer 47

meiosis, 4 haploid megaspores, 3

Question 48

Megaspore divides by ____ to produce ___ with ___ and ___.

Answer 48

mitosis, megagametophyte, 8 nuclei, 7 cells

Question 49

The mature embryo sac =

Answer 49

megagametophyte

Question 50

2 polar nuclei fuse to form the

Answer 50

2n central cell

Question 51

Pollination is the process by which pollen is transferred from ___ to ____

Answer 51

anthers, stigma

Question 52

The pollen grain doesn’t germinate unless it lands on a compatible stigma; pollen tube grows through the style between cells of ___ tissue

Answer 52

transmitting

Question 53

Double fertilization occurs in angio sperms – describe it

Answer 53

one sperm fertilizes the egg to form the zygote, the other sperm fertilizes the 2n central cell to form the 3n endosperm

Question 54

The clusters of flowers shown here are called

Answer 54

inflorescences

Question 55

Each silk on a female flower is the part of the carpel where pollen lands, also known as the ___

Answer 55

stigma

Question 56

Maize flowers are perfect or imperfect?

Answer 56

imperfect

Question 57

Maize flowers are complete or incomplete?

Answer 57

incomplete

Question 58

Maize plants are monoecious or dioecious?

Answer 58

monoecious

Question 59

apple flowers have ___ flowers

Answer 59

epigynous

Question 60

cherry flowers have ___ flowers

Answer 60

perigynous