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AP Biology > Chapter 30 Vocab > Flashcards

Chapter 30 Vocab Flashcards

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AP® Biology flashcards Biology 101 flashcards
0
Q

Sporophytes

A

The dominant, diploid generation of angiosperms

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1
Q

Gametophytes

A

Male or female haploid plants that are only a few cells and rely entirely on sporophytes for nutrition

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2
Q

Fertilization

A

The fusion of gametes resulting in diploid zygotes

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3
Q

Receptacle

A

The part of the stem that floral organs are attached to

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4
Q

Carpel

A

The female reproductive feature

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5
Q

Stamens

A

The male reproductive feature

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6
Q

Petals

A

The brightly colored portion of the plant that advertises it to pollinators

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7
Q

Sepals

A

Enclose and protect unopened buds and resemble leaves

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8
Q

Ovary

A

Female reproductive organ that encloses the ovule

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9
Q

Style

A

The neck of a carpel

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10
Q

Stigma

A

The sticky part at the top of the style that captures pollen

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11
Q

Ovules

A

Unfertilized “eggs” of the carpel

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12
Q

Filament

A

Stalk-like structure of the stamen

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13
Q

Anter

A

A terminal organ on top of the filament that contains and releases pollen

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14
Q

Complete flowers

A

Flowers that contain all 4 basic organs

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15
Q

Incomplete flower

A

Flowers lacking one or more parts of the flower

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16
Q

Unisexual flowers

A

Flowers which contain the reproductive organs of only one gender

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17
Q

Inflorescence

A

Clusters of flowers

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18
Q

ABC hypothesis

A 
Theory that explains how 3 genes direct formation of 4 organs
A: sepals
AB: petals
BC: stamens
C: carpels
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19
Q

Embryo sac

A

Forms within a fertilized ovule

20
Q

Megasporangium

A

The tissue within the ovary that the ovules develop in

21
Q

Integuments

A

Protective tissue that surround the magasporangium

22
Q

Micropyle

A

A small gap in the integuments

23
Q

Megaspores

A

Cell within megasporangium divides into 4 MEGASPORES, only one of which survives to divide 3 times by mitosis w/o cytokenisis

24
Q

Microsporangia

A

Pollen sacs found in anters

25
Q

Microsporocytes

A

Diploid cells within the pollen sac

26
Q

Microspores

A

Haploid cells that truly from the microsporocyte going though meiosis

27
Q

Pollen grain

A

The microspore along with the tube cell it creates via division

28
Q

Pollen tube

A

A tube cell which caries pollen grain, as it divides into two sperm cells, to the ovary

29
Q

Pollination

A

The transfer of pollen from an anther to a stigma

30
Q

Endosperm

A

A food storing tissue in the seed caused by one of the sperms joining with the polar nuclei and forming a triploid (3n) nucleus

31
Q

Double fertilization

A

One sperm joins egg and forms zygote, other joins polar nuclei and forms endosperm.

32
Q

Suspensor

A

A thread if cells that anchor embryo to parent cell

33
Q

Dormancy

A

A state of no metabolic activity

34
Q

Seed coat

A

A hard protective case that encloses the embryo and food

35
Q

Hypocotyl

A

Embryonic axis located under where cotyledons are attached

36
Q

Radicle

A

Embryonic root

37
Q

Epicotyl

A

Part of embryonic axis above cotyledons and below the first leaves

38
Q

Plumule

A

Epicotyl, young leaves, and apical meristem collectively

39
Q

Coleoptile

A

Sheath covering the shoot of grass seed

40
Q

Coleorhiza

A

sheath protecting roots of grass seed

41
Q

Inbibition

A

The uptake of water due to the low water potential of the dry seed

42
Q

Fruit

A

The flower develops into a FRUIT which protects enclosed seeds and aids In dispersal

43
Q

Pericarp

A

The thick wall of the fruit

44
Q

Simple fruit

A

Derived from a single carpel or fused carpels

45
Q

Aggregate fruit

A

Results from a single flower that has more than one carpel

46
Q

Multiple fruit

A

Inflorescence of flowers that join ovaries as they grow

47
Q

Accessory fruit

A

Other parts of the fruit besides the ovary form the “fruit”

AP Biology (10 decks)

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