Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 1'LAXTS AM> 97 kind. The apple and pear belong to this group. Ac- cording to Wai re, cross-fertilization is an important fac- tor in the production of pome fruits. The pear blossom is a typical flower, composed of five brownish-green calyx lobes, five white or pinkish petals, numerous stamens, a five-celled ovary, and live styles and stigmas. The pear forms at the base of the blossom. There is within the blossom a yellowish-green saucer-shaped disk, upon which the nectar is secret
Elementary studies in insect life Elementary studies in insect life elementarystudie00hunt Year: 1902 1'LAXTS AM> 97 kind. The apple and pear belong to this group. Ac- cording to Wai re, cross-fertilization is an important fac- tor in the production of pome fruits. The pear blossom is a typical flower, composed of five brownish-green calyx lobes, five white or pinkish petals, numerous stamens, a five-celled ovary, and live styles and stigmas. The pear forms at the base of the blossom. There is within the blossom a yellowish-green saucer-shaped disk, upon which the nectar is secreted. Extending from this disk to the ovary are five styles. Within the ovary are the ovules, which upon proper fer- tilization become seeds. The ends and a strip down one FIG, 73. Buds of Bartlett pear. (After Wuite.) side of the green styles are rough, caused by fringe- like projections for facilitating the reception and re- tention of the pollen grains. The stamens terminate in small roundish bodies, termed anthers. The four-celled anthers, when mature, split, allowing the pollen to escape —7
Size: 1403px × 1426px
Photo credit: © Bookworm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
