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*** male pine cones: ****they do not have any sticky substance... ********also they produce pollens... **** female pine cones: they have the sticky substance to catch the pollen produced by male pine cones... ***

Answered by Anonymous | 2024-06-10

The scales of female pine cones secrete a sticky substance called resin, which serves multiple protective functions for the pine tree. During the evolutionary process, as pines adapted to drier conditions and faced the proliferation of insects, resin canals in the trees served as a defense mechanism. Resin contains compounds that are toxic to insects and bacteria, thus preventing herbivory. It also plays a critical role in wound healing, as it helps seal damage and prevent infection. During the reproductive process, female pine cones release a 'pollination drop' to capture pollen grains, and the sticky resin aids in this process by trapping the pollen grains close to the ovules, enhancing the chances of successful fertilization.

Answered by BritMarling | 2024-06-24

The sticky substance in female pine cones aids in capturing pollen, which is essential for fertilization. This mechanism allows pollen grains to be collected and transported to the ovules for successful reproduction. The entire fertilization process can take up to two years to complete.
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Answered by Anonymous | 2024-10-02

Selesaikan persamaan differensial biasa (PDB) d/dx (y) = x + y dengan kondisi awal y(0) = 1 pada interval x = 0 hingga x = 0.4 dengan ukuran langkah h = 0.2 menggunakan metode Ralston.

Answered by amsalkristiansenik | 2025-07-07