when mycropyle, chalaza and funicle are in a strait line, the ovule is called orthotropous anatropous amphitropous campylotropous

The shape of the ovules as they develop often affects the final shape of the seeds. Plants generally produce ovules of four shapes: the most common shape is calledanatropous, with a curved shape.Orthotropousovules are straight with all the parts of the ovule lined up in a long row producing an uncurved seed. Campylotropous ovules have a curved megagametophyte often giving the seed a tight "C" shape. The last ovule shape is calledamphitropous, where the ovule is partly inverted and turned back 90 degrees on its stalk (the funicle orfuniculus).