= Observing the growth of pollen tubes (Practical Biology)
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Online text: https://practicalbiology.org/cells-to-systems/reproductive-systems/observing-the-growth-of-pollen-tubes
Published educational practical on Practical Biology, a Royal Society of Biology site. No personal byline or publication date is stated. September 2009 is a health and safety check; October 2011 is the access date of a linked website. Neither establishes publication.
Cited passages: Technical note 3; Teaching notes, male gametophyte, tube shape and the steps between pollen germination and seed formation.
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