Lecture 10

Question 1

Where does Microsporogenesis occur

Answer 1

Microsporangia

Question 2

Where is Microsporangia located

Answer 2

Anther

Question 3

How many Meiosis occurs in in each

Answer 3

2

Question 4

Mother mega/microspore cell undergoes

Answer 4

Meiosis

Question 5

Male Gametophyte

Answer 5

Pollen Grain

Question 6

Pollen Grain Protected by

Answer 6

Outer layer (sporopollenin), Inner (cellulose)

Question 7

Sporopollenin Protection

Answer 7

Resistant to degradation and fossilization

Question 8

Parts of Pollen Grain

Answer 8

Pollen Tube, Generative Cell

Question 9

Generative Cell produce?

Answer 9

Male gametes (sperm cells)

Question 10

Meiosis forms

Answer 10

Tetrad

Question 11

Megaspore undergoes how many mitosis

Answer 11

3

Question 12

Megaspore mitosis produces

Answer 12

Polar Nuclei Cell, 7 eggs (1n) and 6 will disintegrate

Question 13

Pollination: Stigma

Answer 13

Pollen reception, recognition, and hydration

Question 14

Pollination: Pollen Tube (4)

Answer 14

1: Pollen Tube Reaches Ovule
2: Generative Cell Travels Pollen Tube
3: Generative Cell has Two Sperm (male gametes)
4: Double Fertilization

Question 15

Double Fertilization n’s XXXXX

Answer 15

Egg cell (n) + Male gamete (n) = Zygote (2n)

Central cell (2n) + Male gamete (n) = Endosperm mother cell (3n)

Question 16

Zygote Purpose

Answer 16

Embryo (new plant body)

Question 17

Endosperm Mother cell Purpose

Answer 17

Endosperm: nourishment of embryo during development or germination

Question 18

Ovule Purpose

Answer 18

Seed coat: protection; seed dispersion

Question 19

Cotyledons

Answer 19

First part of a plant to emerge from the seed. Formed within the seed along with the endosperm. Botanists classify plants based on the number of cotyledons they have. Provide the initial growth for the plant and as an energy source

Question 20

Root Apical Meristem

Answer 20

Region within the growing root containing meristematic cells

Question 21

Shoot Apical Meristem

Answer 21

Region in the growing shoot containing meristematic cells

Question 22

Number of cotyledons in Angiosperm embryos

Answer 22

of cotyledons found in the embryo is basis for distinguishing the 2 classes of angiosperms, and is the source of the names Monocotyledonae (“one cotyledon”) and Dicotyledonae (“two cotyledons”)

Question 23

Endosperm Function

Answer 23

Embryo nourishment during development or germination, Protection of the embryo, May impose dormancy on embryos

Question 24

Seed storage compounds (in the cotyledons or endosperm)

Answer 24

Proteins, Minerals, Carbs, Lipids

Question 25

Nuclear endosperm developments (2)

Answer 25

Cereals (fill from out in), Arabidopsis (out in puzzle)

Question 26

Albuminous or Endospermic seed

Answer 26

More Endosperm. If the seed has a large amount of endosperm as a result of its larger synthesis or less utilization until the seed germinates, it is called endospermic or albuminous seed

Question 27

Exalbuminous or exendospermic seed

Answer 27

More Cotyledons. If the seed uses up most or all of the endosperm much before germination, the seed becomes non endospemouic or exalbuminous. In such cases the food materials are then stored in cotyledons which become larger

Question 28

Single Flower to Syncarpous Gynoceium to ???

Answer 28

Dry/Fleshy Fruit

Question 29

Dry Fruit to ???

Answer 29

Dehiscent (burst open), Indehiscent (not splitting when ripe)

Question 30

What is fruit

Answer 30

Ovary wall

Question 31

Berry (fleshy)

Answer 31

endocarp and mesocarp fleshy; exocarp skinlike; one to many seeds

Question 32

Hesperidium (fleshy)

Answer 32

axile placentation; glandular endocarp; derived from superior ovary

Question 33

Pepo (fleshy)

Answer 33

parietal placentation; derived from inferior ovary

Question 34

Drupe (fleshy)

Answer 34

generally one-seeded; woody endocarp; fleshy mesorcarp; skin-like exocarp

Question 35

Pome (fleshy)

Answer 35

derived from inferior ovary; fleshy extracarpellary tissue

Question 36

Follicle (Dry)

Answer 36

(Dehiscent) derived from 1 carpel; dehiscence through placenta

Question 37

Capsule (Dry)

Answer 37

(Dehiscent) derived from 2 to many-carpellate syncarpous gynoecium. Varied dehiscence

Question 38

Achene (Dry)

Answer 38

(indehiscent) one-seeded; pericarp attached to seed coat only at one point

Question 39

Aggregate of achene fruits

Answer 39

a fruit formed from several carpels derived from the same flower (strawberry)