This video segment adapted from NOVA explains how flowers play a central role in the reproductive cycle of plants. Their striking array of colors, patterns, fragrances, and nectar all require lots of ...
A gradient (red) in the concentration of auxin, a plant hormone, determines that only one of the eight undifferentiated nuclei in a plant's embryo sac will become an egg. (In this image, a large ...
A gradient (red) in the concentration of the plant hormone auxin determines that only one of the eight nuclei in a plant's embryo sac will become an egg. (The blue island in the image is a cell ...
1. Petals-Generally coloured part of a flower and collectively called as corolla. 2. Sepals-Green part just below the petals and collectively called as calyx. 3. Stamen-Male reproductive part and ...
The Mostly Male theory is the first to use evidence from gene phylogenies, genetics, modern plant morphology and fossils to explain the evolutionary origin of flowers. It proposes that flower ...
Carol A. Loopstra, Aidyn Mouradov, Adam Vivian-Smith, Tina V. Glassick, Beth V. Gale, Simon G. Southerton, Heidi Marshall, Robert D. Teasdale Plant Physiology, Vol ...
Researchers have discovered an ancient plant species whose reproductive biology captures the evolution from one to two spore sizes -- an essential transition to the success of the seed and flowering ...
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