Botany and Plant Science

After fertilization, the ovule develops into the seed while the ovary develops into the fruit. The ovule contains the egg cell which, when fertilized by pollen from the anther, becomes the embryo and develops into a seed with a protective seed coat. The pollen grain delivers the sperm cells but does not become part of the seed. The ovary surrounding the ovule grows into the fruit.

Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of a flower on a different plant. Self-pollination occurs within the same flower or plant.

The female reproductive part of a flower, known as the carpel or pistil, is composed of the stigma (which receives pollen), the style (the tube), and the ovary (which contains ovules).

After fertilization, the ovules inside the ovary develop into seeds, while the ovary itself matures and ripens into the fruit.

Self-fertilization occurs when pollen from the same plant fertilizes its own ovules. This is common in many flowering plants.

The pistil is the female reproductive part of a flower, consisting of the stigma, style, and ovary. The stamen is the male reproductive part.

The stamen is the male reproductive organ of a flower, which includes the anther where pollen is produced. The pistil is the female organ.

Flowers are the reproductive organs of angiosperms, containing the structures necessary for pollination and seed production.

The stem provides structural support for the plant and contains vascular tissues (xylem and phloem) that transport water, minerals, and nutrients.

Ferns produce spores in structures called sori, which are typically found on the underside of their fronds. Roots, stems, and rhizoids do not serve this reproductive function.

Photosynthesis is a universal characteristic of the plant kingdom, where plants convert light energy into chemical energy. While not all plants have roots or vascular systems, and some are unicellular (like some algae), all plants photosynthesize. This is the defining feature that separates plants from other kingdoms.

In non-vascular plants like mosses, the gametophyte is the dominant, photosynthetic, and long-lived stage of the life cycle, while the sporophyte is dependent on it.

A complete flower is defined as having all four main floral parts: sepals, petals, stamens, and pistils.

In the alternation of generations, the gametophyte is the haploid stage that produces haploid gametes (sperm and eggs) through mitosis.