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Plant Morphology > Lecture 10 > Flashcards

Lecture 10 Flashcards

1
Q

Where does Microsporogenesis occur

A

Microsporangia

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2
Q

Where is Microsporangia located

A

Anther

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3
Q

How many Meiosis occurs in in each

A

2

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4
Q

Mother mega/microspore cell undergoes

A

Meiosis

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5
Q

Male Gametophyte

A

Pollen Grain

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6
Q

Pollen Grain Protected by

A

Outer layer (sporopollenin), Inner (cellulose)

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7
Q

Sporopollenin Protection

A

Resistant to degradation and fossilization

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8
Q

Parts of Pollen Grain

A

Pollen Tube, Generative Cell

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9
Q

Generative Cell produce?

A

Male gametes (sperm cells)

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10
Q

Meiosis forms

A

Tetrad

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11
Q

Megaspore undergoes how many mitosis

A

3

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12
Q

Megaspore mitosis produces

A

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

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13
Q

Pollination: Stigma

A

Pollen reception, recognition, and hydration

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14
Q

Pollination: Pollen Tube (4)

A

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

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15
Q

Double Fertilization n’s XXXXX

A

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

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

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16
Q

Zygote Purpose

A

Embryo (new plant body)

17
Q

Endosperm Mother cell Purpose

A

Endosperm: nourishment of embryo during development or germination

18
Q

Ovule Purpose

A

Seed coat: protection; seed dispersion

19
Q

Cotyledons

A

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

20
Q

Root Apical Meristem

A

Region within the growing root containing meristematic cells

21
Q

Shoot Apical Meristem

A

Region in the growing shoot containing meristematic cells

22
Q

Number of cotyledons in Angiosperm embryos

A

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”)

23
Q

Endosperm Function

A

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

24
Q

Seed storage compounds (in the cotyledons or endosperm)

A

Proteins, Minerals, Carbs, Lipids

25
Q

Nuclear endosperm developments (2)

A

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

26
Q

Albuminous or Endospermic seed

A

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

27
Q

Exalbuminous or exendospermic seed

A

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

28
Q

Single Flower to Syncarpous Gynoceium to ???

A

Dry/Fleshy Fruit

29
Q

Dry Fruit to ???

A

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

30
Q

What is fruit

A

Ovary wall

31
Q

Berry (fleshy)

A

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

32
Q

Hesperidium (fleshy)

A

axile placentation; glandular endocarp; derived from superior ovary

33
Q

Pepo (fleshy)

A

parietal placentation; derived from inferior ovary

34
Q

Drupe (fleshy)

A

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

35
Q

Pome (fleshy)

A

derived from inferior ovary; fleshy extracarpellary tissue

36
Q

Follicle (Dry)

A

(Dehiscent) derived from 1 carpel; dehiscence through placenta

37
Q

Capsule (Dry)

A

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

38
Q

Achene (Dry)

A

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

39
Q

Aggregate of achene fruits

A

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

Plant Morphology (6 decks)

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