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Questions and Answers
The flower is a highly specialized organ adapted to produce the stem.
The flower is a highly specialized organ adapted to produce the stem.
False (B)
The flower is an organ adapted to produce the fruit and seed.
The flower is an organ adapted to produce the fruit and seed.
True (A)
The flower is a general organ adapted to produce the fruit and seed.
The flower is a general organ adapted to produce the fruit and seed.
False (B)
The flower produces the seed directly.
The flower produces the seed directly.
The main function of the flower is to produce the fruit and seed.
The main function of the flower is to produce the fruit and seed.
The Gynoecium is a part of the Androecium.
The Gynoecium is a part of the Androecium.
The Calyx is a part of the Perianth.
The Calyx is a part of the Perianth.
The Anthers are part of the Filaments.
The Anthers are part of the Filaments.
The Corolla is always present in a flower.
The Corolla is always present in a flower.
The Gynoecium and the Androecium are both non-sexual sets.
The Gynoecium and the Androecium are both non-sexual sets.
The odor of the flower is strongly sweet.
The odor of the flower is strongly sweet.
The taste of the flower is bitter and mucilaginous.
The taste of the flower is bitter and mucilaginous.
The disc floret is a key element of the flower.
The disc floret is a key element of the flower.
The flower has a fruity odor.
The flower has a fruity odor.
The flower has only one key element.
The flower has only one key element.
The androecium is connected to the anther through the filament.
The androecium is connected to the anther through the filament.
The cells in the filament have thick and irregular anticlinal walls.
The cells in the filament have thick and irregular anticlinal walls.
Spiny pollen grains are a characteristic feature of flowering plants.
Spiny pollen grains are a characteristic feature of flowering plants.
The anther is responsible for producing the seed.
The anther is responsible for producing the seed.
The filament provides mechanical support to the anther.
The filament provides mechanical support to the anther.
The anther is attached at its base to the carpel.
The anther is attached at its base to the carpel.
Gynoecium consists of Sepals or Petals.
Gynoecium consists of Sepals or Petals.
Carpels/Pistils consist of the Stigma, Style, and Filament.
Carpels/Pistils consist of the Stigma, Style, and Filament.
The anther is attached at its base to the filament.
The anther is attached at its base to the filament.
Gynoecium consists of Carpels or Pistils.
Gynoecium consists of Carpels or Pistils.
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Study Notes
Introduction to the Flower
- A flower is a highly specialized organ that produces fruit and ultimately, seeds.
- It is responsible for the propagation of the plant.
Composition of the Flower
- The flower consists of the receptacle, accessory sterile parts, and necessary fertile parts.
- The floral parts are divided into two sets: non-sexual (accessory sterile) and sexual (necessary fertile) sets.
- The non-sexual sets are the calyx and corolla, while the sexual sets are the androecium and gynoecium.
Anatomy of the Flower
Perianth
- The perianth consists of the calyx (sepals) and corolla (petals).
- Calyx:
- Green in color
- May be present or absent
- Corolla:
- Brightly colored
- May be present or absent
Cohesion
- If the calyx or corolla is free, it is poly- or aposepalous or apopetalous.
- If the calyx or corolla is united, it is gamo- or synsepalous or synpetalous.
Examples
- Rosa flower: apopetalous corolla
- Datura flower: aposepalous calyx
Androecium
- The androecium consists of stamens.
- Stamens consist of filaments that carry anthers.
- The anther is attached to the filament at its base.
- Characteristics of androecium:
- Elongated cells with thin and straight anticlinal walls
- Spiny pollen grains
Gynoecium
- The gynoecium consists of carpels or pistils.
- Carpels/pistils consist of the ovary, style, and stigma.
- Odor: aromatic apple-like
- Taste: bitter mucilaginous
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