3: Plant Systematics Flashcards

1
Q

Theophrastus 371-287 BC

A

Father of botany

collected and named 500 species from mediterranean

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2
Q

Carl Linnaeus

A

created binomial system of classification

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3
Q

Taxonomic Hierarchy

A
Kingdom
Phylum
Class
Order
Family 
Genus
species
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4
Q

What does ORDER end in

A

-ales

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5
Q

What does FAMILY end in

A

-aceae

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6
Q

Basic flower structure

A

flower is a specialised reproductive shoot

contains 4 different whorls of organs

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7
Q

4 whorl organs

A

Outer two whorls

1) calyx
2) corolla
3) stamens
4) carpels

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8
Q

What is the calyx made up of

A

sepals

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9
Q

What is the corolla made up of

A

petals

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10
Q

what are stamens

A

male reproductive organ

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11
Q

what are carpels

A

female reproductive organ

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12
Q

what are the accessory flower parts

A

perianth

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13
Q

what is the perianth made up of

A

calyx and corolla

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14
Q

Female structures

Carpel

A

1) ovary
2) style
3) stigma (sticky to catch pollen)

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15
Q

Male structures

Stamen

A

Anther

Filament

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16
Q

Floral evolution

primitive to advance

A

Reduction
Fusion
Specialisation

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17
Q

Example of reduction

A

number of flower parts (male/female parts)

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18
Q

Example of fusion

A

Flower part fused together in arum lily (brat)
sepal and petals fused
female fused to male parts

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19
Q

Example of specialisation

A

specialised shapes that enables the plant to be fertilized by one particular organism

20
Q

inferior ovary, advanced or primitive?

A

advanced

21
Q

Floral evolution

Calyx and corolla

A

1) loss of one whorl
2) two whorls may look similar
3) fusion of whorls to each other or the ovary

22
Q

Floral evolution

Stamen

A
  • leaf modified to form stalk and anther
  • anther loss
  • fusion of filament to themselves or the corolla
23
Q

Loss of anther

A

staminode

24
Q

Fusion of filaments to themselves

A

connate

25
Q

Fusion of filaments to corolla

A

adnate

26
Q

Floral Evolution

Carpel

A
  • leaf modified to form the ovary
  • numerous free carpels
  • numerous partly fused carpels
  • numerous fused carpels
  • superior ovary
  • partly inferior ovary
  • inferior ovary
27
Q

Apocarpous

A

Free carpels

28
Q

Syncarpous

A

fully fused carpels

29
Q

Superior ovary

A

above receptacle

30
Q

Inferior ovary

A

below receptacle

31
Q

Actinomorphic

A

uniform, radial symmetry

32
Q

Zygomorphic

A
bilateral symmetry
(unable to be cut in more than one direction)
33
Q

Inflorescence

A

solitary

33
Q

Inflorescence

Solitary

A

coming from individual nodes on the stem and at each node a leaf is being formed and a stalk for the flowers

34
Q

Inflorescence

Single

A

single flower on a single stem

35
Q

Inflorescence

Raceme

A

stem with oldest growth at the base and newest at the top

36
Q

Inflorescence

Panicle

A

multiple clusters on several branches

37
Q

Inflorescence

Spike

A

individual flowers dont have their own stem they grow directly from the main stem

38
Q

Inflorescence

Spadix

A

spike are really tightly packed a thick spike is protected by a colourful brat

39
Q

Inflorescence

Umbel

A

stems from flower heads (equal length) come from one simple point which makes the head even like an umbrella

40
Q

Inflorescence

Corymb

A

flower cluster with flower stalks that are a little longer so the flower forms a flat or convex head

41
Q

Inflorescence

Capitulum

A

looks like one big flower but it is actually many tiny flowers all packed on the same flower head

42
Q

Inflorescence

Cymose

A

each main stem will have a flower on it

43
Q

Monocots

A

when it germenates it only has one seedling

  • only in multiples of three
  • leaf veins parallel
  • sheath base
  • scattered vascular bundles
  • fibrous root system
44
Q

Dicots

A
two cotyledons
main veins usually branched
vascular bundles arranged in ring
flower parts usually arranged in multiple of four or five
taproot usually present