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A floral diagram is a graphic representation of the structure of a flower. It shows the number of floral organs, their arrangement and fusion. Different parts of the flower are represented by their respective symbols. Floral diagrams are useful for flower identification or can help in understanding angiosperm evolution.
The morphology of most flowers (called cyclic flowers) is based on four types of whorls: The calyx: zero or more whorls of sepals at the base; The corolla: zero or more whorls of petals above the calyx; The androecium: zero or more whorls of stamens, each comprising a filament and an anther
A raceme (/ r eɪ ˈ s iː m, r ə-/) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit.
O'Keeffe experimented with depicting flowers in her high school art class. Her teacher explained how important it was to examine the flower before drawing it. So, O'Keeffe held it in different ways, capturing different perspectives of the flowers, and also created studies of only a portion of the flower.
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Flowers emerged in plant evolution as an adaptation for the promotion of cross-fertilisation (outcrossing), a process that allows the masking of deleterious mutations in the genome of progeny. The genetic masking effect of cross-fertilisation sexual reproduction is known as genetic complementation . [ 23 ]