Female gametes of brown seaweed, Fucus

Female gametes of brown seaweed, Fucus

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Caption: Light micrograph of oospheres, or female gametes, of the brown seaweed Fucus sp. An oosphere is roughly equivalent to a female egg cell and is formed within an oogonium, the female reproductive organ. The oogonium is a unicellular structure, which develops at the tip of a frond in a special cavity called a conceptacle. An oogonium may contained one or several oospheres. Oospheres contain a rich supply of nutrients, mainly in the form of oil droplets. Unfertilized oospheres are released into the water where they fuse with male gametes called antherozoids to form zygotes. Magnification: x100 at 35mm size.

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Keywords: alga, algae, algal, botany, fucus sp., light micrograph, lm, nature, oogonia, oogonium, oospheres, plant, seaweed

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