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SBI3U > Chapter 3: Multicellular Diversity > Flashcards

Chapter 3: Multicellular Diversity Flashcards

1
Q

alga

A

a unicellular or multicellular photosynthetic, aquatic protist

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2
Q

plant

A

a multicellular, photosynthetic eukaryote with cellulose based cell walls

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3
Q

sporic reproduction

A

sexual reproduction that alternates between a gamete making individual and a spore-making individual

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4
Q

gametophyte

A

the haploid plant in sporic reproduction that produces gametes by mitoses

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5
Q

sporophyte

A

the diploid plant in sporic reproduction that produces spore by meiosis

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6
Q

embryo

A

an organism’s pre-birth stage of development

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7
Q

bryophyte

A

a small, non-vascular land plant (Bryophyta is for mosses; a type of bryophyte)

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8
Q

gymnosperm

A

a vascular plant with non-enclosed seeds

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9
Q

angiosperm

A

a vascular plant with seeds enclosed in protective tissue

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10
Q

cone

A

a gymnosperm structure that contains male or female reproductive parts

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11
Q

flower

A

a collection of structures in angiosperms used for sexual reproduction

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12
Q

monocot

A

a major cluster of flowering plants that have one cotyledon

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13
Q

dicot

A

a major cluster of flowering plants that have two cotyledons

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14
Q

fungus

A

a stationary, heterophobic eukaryotic organism who cell walls contain chitin

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15
Q

hypha

A

a multicellular, thread-like filament that makes up the basic structural unit of a fungus

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16
Q

myecellium

A

a complex, net-like mass made of branching hyphae

17
Q

fruiting body

A

the spore-producing reproductive structure in fungi

18
Q

zygospore

A

a diploid structure that develops after two haploid hypae of opposite types combine and fuse their nuclei; this structure is a characteristic of zygospore fungi that reproduce sexually during unfavourable conditions

19
Q

ascus

A

a small finger-like structure in which sac fungi develop spores

20
Q

basidium

A

a club shaped hypha found in members of the Basidiomycotes; they bear spores called basidiospheres

21
Q

lichen

A

an organism thy results from a mutualistic relationship between a fungus and photosynthetic plant or alga

22
Q

invertabrae

A

an animal that does not have a backbone

23
Q

vertabrae

A

an animal that does have a backbone

24
Q

radial symmetry

A

a body plan that can be divided along any plane, through a central axis, into roughly equal halves

25
Q

bilateral symmetry

A

a body plan that can be divided along one plane, through the central axis, into equal halves

26
Q

coelom

A

a fluid-filled body cavity that provides space for the development and suspension of organs and organ systems

27
Q

segmentation

A

the division of multicellular bodies into a series of repetitive parts

28
Q

polyp

A

the tube-shaped sessile body form of cnidarians

29
Q

medusa

A

the umbrella shaped, free-swimming body form of cnidarians

30
Q

mantle

A

a membrane that surrounds a mollusc’s internal organs

31
Q

exoskeleton

A

an external skeleton that protects organs, provides support for muscle attachment, and protects against water loss and predation

32
Q

notochord

A

a flexible, rod-shaped structure found in chordate animals; during vertebrate development it is replaced by the spine

33
Q

cartilage

A

the flexible, non-bony, tough material found in vertebrate

endoskeletons

34
Q

tetrapod

A

a vertebrate with two pairs of limbs; an amphibian, reptile,

bird, or mammal

35
Q

ectothermy

A

the reliance on environmental heat for determining internal body temperature

36
Q

endothermy

A

the use of metabolic heat to maintain a high, constant body temperature

37
Q

mammary gland

A

a mammalian gland that produces and secretes milk for nourishing developing young

38
Q

placenta

A

an organ in the pregnant uterus that exchanges nutrients and oxygen between the mother and developing offspring

SBI3U (15 decks)

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