Credit: FRANCIS LEROY & MICHAEL PIERARD, BIOCOSMOS/SCIENCE PHOTO LIBRARY

Caption: Development of the embryo sac of a flower, animation. The embryo sac is the structure that produces the female gametes (sex cells). It develops within the flower's ovule. A megaspore mother cells undergoes meiosis to produce four haploid megaspore cells, three of which then degenerate. The remaining megaspore undergoes three mitotic divisions to produce eight nuclei. One of these becomes the ovum (egg cell), two become synergids, two become polar nuclei and three become antipodal nuclei. Upon fertilisation two sperm cells from the male gamete are released into the ovule. One fuses with the ovum to form a diploid zygote, which becomes the seed, the other fuses with both polar bodies to form a triploid primary endosperm.

Release details: Model release not required. Property release not required.

Keywords: angiosperm, angiosperms, animated, animation, antipodal cells, biological, biology, black background, botanical, botany, development, double fertilisation, egg cell, embryo sac, female gametophyte, fertilisation, fertilization, flora, flower, flowering plant, labeled, labelled, labels, maturation, megaspore, mother cell, nature, no-one, nobody, ovule, ovum, plant, polar nuclei, reproductive structure, sexual reproduction, synergids, text

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Flower embryo sac development, animation

K004/3287 Rights Managed

Downloadable master

Duration: 00:00:45

Frame size: 1920x1080

Frame rate: 25

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 287.2M

Original

Capture format: QuickTime Animation

Codec: H.264

Please contact Science Photo Library if you require the original, or other formats.

 

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