Are eggs of plants that develop into seeds?

An eight-celled megagametophyte (called the embryo sac) produces the egg. Fertilization occurs with the fusion of a sperm with an egg to produce a zygote, which eventually develops into an embryo. After fertilization, the ovule develops into a seed, and the ovary develops into a fruit.

Can seeds develop without the flower being pollinated?

Flowers must rely on vectors to move pollen. Successful fertilization of the flower and the growth of seeds and fruit; or, A plant can be only partially fertilized, in which the fruit and/or seeds do not fully develop; or, The plant can completely fail to be pollinated, and may not reproduce at all.

Which part of a flower develops into the seed?

ovary
Once pollen gets to the ovary within the flower, the ovary develops into a fruit. The ovules inside the ovary develop into seeds inside of this fruit.

Which female part of the flower develops into the seed?

ovary, in botany, enlarged basal portion of the pistil, the female organ of a flower. The ovary contains ovules, which develop into seeds upon fertilization.

What are pollen grains and how is pollen tube formed?

Pollen tubes are produced by the male gametophytes of seed plants. Pollen tubes act as conduits to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue in some gymnosperms.

Do plants have sperm?

Some plants such as ferns and mosses have sperm that move. Flowering plant sperm cells cannot move by themselves. The flowering plant sperm cells are contained within pollen grains. The sperm is moved down a pollen tube until it reaches the ovule at the bottom of the flower.

How pollen grain can be prevented from germinating?

Incompatibility Genes in Flowers In recent decades, incompatibility genes—which prevent pollen from germinating or growing into the stigma of a flower—have been discovered in many angiosperm species. Pollen tubes have to grow through the tissue of the stigma and style before they can enter the ovule.

Why do pollen grains only produce tubes in flowers of the same species?

Why do pollen grains only produce tubes in flowers of their own species? Pollen grain too large to fit down stigma and go down the style. Explain how the pollen tube grows down through the style. If pollination is successful, a pollen grain germinates and a pollen tube grows down the style toward the ovary.

Which part of the flower produces pollen grains?

Stamen
Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.

Which of the following parts develops into a seed?

ovule
ovule, plant structure that develops into a seed when fertilized. A mature ovule consists of a food tissue covered by one or two future seed coats, known as integuments.

Where do pollen grains land during pollination?

stigma
When a pollen grain lands on the stigma of a flower of the correct species , a pollen tube begins to grow. It grows through the style until it reaches an ovule inside the ovary. The nucleus of the pollen then passes along the pollen tube and fuses (joins) with the nucleus of the ovule.

Where are pollen grains produced?

anthers
Through the process of meiosis, pollen is formed in the pollen sacs (microsporangia) inside the anthers of a flower. The anther, while it is developing from anther primordium (undifferentiated cells), forms two clusters of cells.