Flowers
Presented by:
Geonyzl L. Alviola
Intro on flowers



A diagnostic feature of the
angiosperm.



Modified reproductive shoot



The shoot is determinate
Flower parts


Pedicel – the flower stalk

(if absent the flower attachment is sessile)


Bract – reduced leaf



Epicalyx - series ...




Receptacle – region of the flower
which the floral parts are attached
Perianth (perigonium)

receptacle


Tepals – if perianth is
undifferentiated/ the
individual leaf parts
- The term tepal
is usually used when
all segments ...
Perianth is differentiated into two
groups
A. Calyx – the outermost series of the
whorl and consist of individual units
of...


Hypanthium – Floral tube
- a cup like or tubular structure
- around or top of the ovary
- bearing along the margin the
...


Nectary – a specialized structure that secretes
nectar
- found on parianth parts ,
- or within the receptacle
- or with...


Androecium refers to all of the male
organs
- collectively called STAMENS
consist of the following parts:
a. filament (...


Gynoecium refers to all female
organs of a flower.
- collective called CARPEL(pistil)

consist of the following parts:
...
gynoecium


Gynostegium
- the male and
female organs are
fused as one
structure


Androgynophore

- A stalk that bears
the androecium
and gynoecium
Flower Attachment
Pedicellate


Flowers with pedicel
Flower cycly
Flower Cycly
-

Refers to the number of cycles (series of
whorls) or floral parts.
Two basic terms :

1. Complete – having...
Complete Flower
Incomplete flower

Tulip

Raspberry
Flower Sex and Plant Sex
Floral Sex or Flower sex


1.

2.

Refers to the absence or presence
of male and female parts with the
flower.
two kinds ...
Imperfect



Have two kinds :
1. Pistillate (female) – carpel present but
stamen absent
Imperfect Flower

2. Staminate – have only the stamen
Plant Sex


Refers to the presence and distribution of
perfect and imperfect flower on individual of a
species.
A. Hermap...
Monoecious Plant
Dioecious
Other variations






Polygamous plant – having both
bisexual and unisexual flowers
Andromonoecious plant - having bot...




Trimonoecious – refers to a plant
with pistillate, staminate and perfect
flowers on the same individual
Gynodiecious...




Androdioecious – refers to a plant
with male flowers on some and
perfect flowers on othe individuals
Trioecious – re...
Flower Symmetry
Flowers 100131104452-phpapp01
Flowers 100131104452-phpapp01
Flowers 100131104452-phpapp01
Flowers 100131104452-phpapp01
Flowers 100131104452-phpapp01
Flowers 100131104452-phpapp01
Flowers 100131104452-phpapp01
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Flowers 100131104452-phpapp01

  1. 1. Flowers Presented by: Geonyzl L. Alviola
  2. 2. Intro on flowers  A diagnostic feature of the angiosperm.  Modified reproductive shoot  The shoot is determinate
  3. 3. Flower parts
  4. 4.  Pedicel – the flower stalk (if absent the flower attachment is sessile)  Bract – reduced leaf  Epicalyx - series of bracts calyx epicalyx
  5. 5.   Receptacle – region of the flower which the floral parts are attached Perianth (perigonium) receptacle
  6. 6.  Tepals – if perianth is undifferentiated/ the individual leaf parts - The term tepal is usually used when all segments of the perianth are of similar shape and color,
  7. 7. Perianth is differentiated into two groups A. Calyx – the outermost series of the whorl and consist of individual units of modified leaves called SEPALS B. Corolla – the inner most series that consist a modified leaves called PETALS
  8. 8.  Hypanthium – Floral tube - a cup like or tubular structure - around or top of the ovary - bearing along the margin the sepals, petals and stamen
  9. 9.  Nectary – a specialized structure that secretes nectar - found on parianth parts , - or within the receptacle - or within the androecium or gynoecium
  10. 10.  Androecium refers to all of the male organs - collectively called STAMENS consist of the following parts: a. filament (stalk-like) b. anther (pollen bearing)
  11. 11.  Gynoecium refers to all female organs of a flower. - collective called CARPEL(pistil) consist of the following parts: a. ovary b. style c. stigma
  12. 12. gynoecium
  13. 13.  Gynostegium - the male and female organs are fused as one structure
  14. 14.  Androgynophore - A stalk that bears the androecium and gynoecium
  15. 15. Flower Attachment
  16. 16. Pedicellate  Flowers with pedicel
  17. 17. Flower cycly
  18. 18. Flower Cycly - Refers to the number of cycles (series of whorls) or floral parts. Two basic terms : 1. Complete – having all four major series (sepals, petals, stamens & carpels) 2. Incomplete – for a flowering lacking one or more of the four major whorls or parts.
  19. 19. Complete Flower
  20. 20. Incomplete flower Tulip Raspberry
  21. 21. Flower Sex and Plant Sex
  22. 22. Floral Sex or Flower sex  1. 2. Refers to the absence or presence of male and female parts with the flower. two kinds : Perfect / bisexual – both stamen and carpel are present in one flower Imperfect/ unisexual – only one is present
  23. 23. Imperfect  Have two kinds : 1. Pistillate (female) – carpel present but stamen absent
  24. 24. Imperfect Flower 2. Staminate – have only the stamen
  25. 25. Plant Sex  Refers to the presence and distribution of perfect and imperfect flower on individual of a species. A. Hermaphroditic – only a perfect flower B. Monoecious – a plant with only unisexual flowers both male and female on the same individual plant C. Dieocious – have unisexual flower with staminate and pistillate on separate individuals
  26. 26. Monoecious Plant
  27. 27. Dioecious
  28. 28. Other variations    Polygamous plant – having both bisexual and unisexual flowers Andromonoecious plant - having both staminate and perfect flowers on the same individual Gynomonoecious plant – both pistillate and perfect flowers on the same individual
  29. 29.   Trimonoecious – refers to a plant with pistillate, staminate and perfect flowers on the same individual Gynodiecious – refers to a plant with female flowers on some individuals and perfect flowers on the other
  30. 30.   Androdioecious – refers to a plant with male flowers on some and perfect flowers on othe individuals Trioecious – refers to a plant with pistillate, staminate and perfect flowers on different individuals
  31. 31. Flower Symmetry

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