Gravitropism (Geotropism)

Gravitropism (Geotropism)

C003/8195 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 46.7MB

Downloadable file size: 919.1KB

Price image Pricing

Please login to use the price calculator


Credit: MARTIN SHIELDS/SCIENCE PHOTO LIBRARY

Caption: Gravitropism (sometimes referred to as geotropism) is a plant response to earth's gravitational field. Plant stems (shoots) exhibit negative gravitropism because they respond by growing away from the gravitational attraction. Gravitropism is initiated when starch filled plastids called amyloplasts sink towards the gravitational field. This stimulates the release of the growth hormone auxin. This bean plant, Phaseolus vulgaris, shows a turn in its stem which occurred after its pot was tipped over. The response also occurs in the dark showing that it is not phototropism.

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

Keywords: auxin, bean plant, bean seedling, bend, bending, bent, botany, curved, curving, flora, geotropic response, geotropism, gravitropic response, gravitropism, growth and development, hormonal, hormone, legume, negative geotropic response, negative geotropism, negative gravitropic response, negative gravitropism, phaseolus, phaseolus vulgaris, plant, plant biology, plant development, plant growth, plantae, plants, potted, response, response to gravity, shoot, stem, tipped, tipped over, tropism, turned, turning, up, upward, vulgaris

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.