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PJ's Biology > Plant development > Flashcards

Plant development Flashcards

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AP® Biology flashcards Biology 101 flashcards
1
Q

A multicellular structure made of diploid cell that produces male and female spores by meioses

A

Sporophyte

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2
Q

A multicellular structure made of male and female haploid cells (spores) which produce gametes by meioses

A

Gametophyte (male and female)

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3
Q

Zygote

A

Formed when an egg cell and sperm cell join

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4
Q

Alternation of generation

A

Refers to the alternation of the phases of plants from haploid to diploid phases and back

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5
Q

Mosses and Ferns alternate between:

A

Haploid and diploid phases

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6
Q

in plants, haploid cells can reproduce using…

A

Mitosis

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7
Q

In conifers, male and female gametophytes are in the…

A

cone scales

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8
Q

In mosses the dominant phase is

A

gametophytes (haploid)

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9
Q

In ferns and angiosperms and conifers, the dominant generation is

A

sporophyte (diploid)

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10
Q

The familiar conifer adult phase is…

A

Sporophyte (diploid) generation

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11
Q

Vegetative Propagation

A

Asexual reproduction in plants (mitosis only)

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12
Q

Certain plant groups produce organs that are used for asexual reproduction

A

Tubers (potatoes), Rhizomes (IRISES), Stolens(STRAWBERRIES), Bulbs, Corms (like bulbs)

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13
Q

Hormones

A

Chemicals that regulate the growth, development, and function of an organism

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14
Q

Hormones affect changes in particular cells known as…

A

Target cells

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15
Q

IMPORTANT types of Hormones…

A

In plants

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16
Q

Giberellins

A

Cell elongation

17
Q

Cytokinins

A

Fruit development

18
Q

Abscisic Acid

A

Opening and closing of Stomata

19
Q

Ethylene

A

Ripening of fruit and regulation of metabolic activity

20
Q

Auxins

A

Growth Factors (TROPISMS)

21
Q

TROPISM

A

Involuntary respons to an external stimulus like light, water, gravity, or nutrients.

22
Q

Phototropic

A

Grow towards light

23
Q

Negatively Phototropic

A

Grow away form light

24
Q

Geotropic tropic

A

Grow toward center of the earth

25
Q

Negatively Geotropic

A

Grow against gravity

26
Q

Photoperiodicity

A

Plant’s reaction of relative periods of light and darkness

27
Q

Plasmodesmata

A

Microscopic channels which traverse cell walls enabling transport and communication between cells.

PJ's Biology (19 decks)

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