Plant Anatomy and Physiology Flashcards

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1
Q

The Plant Kingdom

A

multicellular organisms
photosynthetic
cell walls composed of cellulose
green pigment chlorophyll

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2
Q

Mosses

A

No vascular tissues

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3
Q

Ferns

A

No seeds; reproduce through spores

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4
Q

Seed Plants

A

Divided into: Flowering (Angiosperms) and Non-Flowering (Gymnosperms)

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5
Q

Angiosperms (Flowering)

A

Have seeds and bear flowers
Seeds are coated and undergo double fertilization
Categorized into: Monocot and Dicot

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6
Q

Gymnosperms (Non-flowering)

A

Have seeds but no flowers

Seeds are “naked”

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7
Q

Monocot

A

1 cotyledon

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8
Q

Dicot

A

2 cotyledon

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9
Q

Cotyledon

A

Primary leaf of the plant’s embryo

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10
Q

PLANT CELLS

A

Types:
Parenchyma Cells
Collenchyma Cells
Sclerenchyma Cells

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11
Q

Parenchyma Cells

A

Thin primary walls and retain protoplasm at maturity

Ex. cells in the leaves for photosynthesis; cells in the roots, stem storage

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12
Q

Collenchyma Cells

A

Thick primary walls and retain protoplasm at maturity
Function as support and located along side actively dividing cells
Ex. Cells responsible for “strength” of celery stalk

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13
Q

Sclerenchyma Cells

A

Cells with lignified secondary walls and lose their protoplasm at maturity
Ex. Xylem tissue fibers

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14
Q

PLANT TISSUES

A
Types:
Dermal Tissue (protection)
Vascular Tissue (transportation)
Ground Tissue (support, storage, photosynthesis)
Meristematic Tissue (growth and elongation)
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15
Q

Dermal Tissue

A

outer covering
Functions: Protection, Water Loss Prevention, CO2 Adsorption
Types: Trichomes, Cuticle, Stomata, Guard Cell

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16
Q

Trichomes

A

hair like protection

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17
Q

Cuticle

A

thin layer that prevents water loss

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18
Q

Stomata

A

Entrance of CO2

`

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19
Q

Guard Cell

A

Regulates the opening and closing of stomata

closing: hot days to prevent water loss

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20
Q

Vascular Tissue

A

present in almost all parts of the plant
Function: Water and Food Transportation
Types: Xylem, Phloem, Bundles, Rings, Annual Rings

21
Q

Xylem

A

for water transport

22
Q

Phloem

A

for food transport

23
Q

Bundles

A

arrangement of vascular tissue for monocots

24
Q

Rings

A

arrangement of vascular tissue for dicots

25
Q

Annual Rings

A

Basis of age for trees
Result from difference of growth rate of plant cells between rainy and sunny seasons

Xylem grows at different rate depending on the season
Thicker: enough water
Thinner: lack of water

26
Q

Ground Tissue

A

Situated between vascular and dermal tissue

Function: support and food storage and photosynthesis

27
Q

Meristematic Tissue

A

Located at the tips (shoot tip and root tip)
Function: growth and elongation
cells are actively dividing

*Apical Meristem- for primary growth
Shoot Apical Meristem- shoot elongation
Root Apical Meristem- root elongation

*Lateral Meristem- secondary growth; stem thickening

28
Q

PLANT ORGAN SYSTEMS

A

A. Shoot System

B. Root System

29
Q

Shoot System

A
Above ground
Components: 
                  Stem
                               Node
                               Internode
                               Modified Stem (B, R, T)
                  Leaves
                               Mesophyll
                  Flowers
                         Carpel/Pistil (Stigma, Style, Ovary, Ovule)
                         Stamen ( Anther, Filament)
                  Accessory Parts
                          Petal
                          Sepal
                          Peduncle
30
Q

Stem

A

make plant upright

31
Q

Node

A

attachment of leaves

32
Q

Internode

A

spaces between nodes

33
Q

Modified Stems ( B, R, T)

A

stem with specialized structures:
Bulb-vertical underground shoot ex. onion
Rhizome- horizontal underground shoot ex, ginger
Tuber- modified rhizome storage ex. cassava, potato

34
Q

Leaves

A

attached to nodes and function for photosynthesis

*Mesophyll layer: contains photosynthetic paranchyma cells

35
Q

Flower

A

mature ovary

3 general parts: male, female, accessory parts

36
Q

Carpel/Pistil

A

Female part

Parts:
Stigma- sticky part which captures pollen
Style: holds stigma upright
Ovary: houses the ovule and develops into a fruit
Ovule: develops into a seed

37
Q

Stamen

A

Male part

Parts:
Anther- releases pollen
Filament- holds the anther upright

38
Q

Accessory Parts

A

Petal- attract pollinators (group: corolla)
Sepal- structural integrity (group calyx)
Peduncle: holds entire flower upright

39
Q

Complete Flower

A

has stamen, pistil and accessory parts

40
Q

Incomplete Flower

A

lacks some parts

41
Q

Perfect Flower

A

contains both stamen and pistil

42
Q

Imperfect Flower

A

lacks either stamen or pistil

43
Q

Root System

A

underground part
Function: anchorage and adsorption
Types: Tap root, Fibrous root

44
Q

Tap Root

A

one primary root and several lateral roots

DICOTS

45
Q

Fibrous Root

A

no primary root and many branching roots

MONOCOTS

46
Q

PLANT DEVELOPMENT

A

Components:
A. Plant Nutrition
B. Plant Hormones
C. Alternation of Generation

47
Q

Plant Nutrition

A

Macronutrients- required in large quantities
(C, H, O, N, S, P)

Micronutrients- required in small quantities
(Fe, Zn, Cu, Mn)

Hydroponics- growing plants in an aqueous solution wherein nutrients, pH and temperature are controlled

Aeroponics- growing of plants suspended in air

48
Q

Plant Hormones

A

Auxin- growth hormone
- floral and fruit development, tissue differentiation

Gibberellin- plant height regulator
-seed germination

Ethylene- flowerng, hastens fruit ripening

Absciscasid- seed dormancy
- counters effect of auxin

Cytokinin- plant cell division

49
Q

Alternation of Generation

A

Sporophyte (diploid or 2n)
-produces haploid (n) spores by meiosis

Gametophytes ( haploid or n)
- produced from mitosis of the zygotes

Pollination- occurs when pollen becomes attache with the stigma. pollen elongates down the style and releases two spermatozoa into embryo sac which fertilizes the egg (double fertilization for angiosperms)

Wind Pollination*- occurs for the plants with lack of scent, floral parts, nectar production but has high pollen production

-induces allergy among humans

After pollination: Formation of Endosperm
Seed Development
Fruit Development