Which Of The Following Statements About Double Fertilization In Angiosperms Is Correct?

Does double fertilization occur in humans?

Each is fertilized independently, and each becomes an embryo.

Occasionally, two sperm are known to fertilize a single egg; this ‘double fertilization’ is thought to happen in about 1% of human conceptions..

How is double fertilization beneficial to plants?

Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). … Some plants may form polyploid nuclei. The large cell of the gametophyte will then develop into the endosperm, a nutrient-rich tissue which provides nourishment to the developing embryo.

How does fertilization occur in angiosperms?

Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule. After fertilization occurs, each ovule develops into a seed. Each seed contains a tiny, undeveloped plant called an embryo. The ovary surrounding the ovules develops into a fruit that contains one or more seeds.

Which flower parts frequently attract pollinators?

Many flowers use visual cues to attract pollinators: showy petals and sepals, nectar guides, shape, size, and color.Showy. Members of the lily family such as the trout lily have very showy sepals and petals that are indistinguishable and are technically called tepals. … Nectar Guides. … Shape. … Size. … Color.

What type of fertilization is represented here characteristic of angiosperms?

Double fertilizationIn angiosperms, the nutritive tissue that sustains growth of the embryo is the triploid endosperm. 20. Angiosperm Characteristics II: Double fertilization is a key characteristic of the angiosperms.

What is polar nucleus?

Definition. Two nuclei that migrate to the center of the embryo sac and fuse with a male nucleus (sperm) to form the primary endosperm nucleus which divides and sometimes forms the endosperm.

What is germination class 10th?

In simple words, germination can be defined as the growth of a seed into a young plant or a seedling.

What is produced when double fertilization occurs in angiosperms?

Double fertilization produces one diploid cell and one triploid cell. The diploid zygote will divide and grow to produce an embryo. The triploid cell grows into the endosperm and will nourish the developing embryo. The rest of the surrounding ovule will develop into a protective seed coat.

What is meant by double fertilization quizlet?

-Double fertilization is a process in angiosperm plants in which two sperm are required to fertilize the contents of the embryo sac. … -The sperm cells of the pollen grain are eventually released. -One sperm will fuse with the egg to form the zygote that will become an embryo.

What is double fertilization class 10th?

Double fertilization : It occurs when one male nucleus fertilizes (fuses) with egg cell to form zygote cell and other male nucleus fuses (fertilizes) with two polar nuclei to cause triple fusion. … After fertilization: (i) Ovary develops into fruit. (ii) Ovules develop into seeds.

What is the other name of vegetative fertilization?

Complete Answer: – The second male gamete fuses with the polar nuclei present in the centre. This process is called triple fusion since three nuclei fuse to form a triploid structure. The triple fusion is also called as Vegetative fertilisation.

Which statement about double fertilization is true?

One Sperm Fuses With An Egg While The Other Sperm Fuses With The Polar Nuclei. It Results In The Formation Of A Diploid Embryo And Triploid Endosperm. Both Sperms Involved In Double Fertilization Form Within The Same Pollen Tube.

What features of seeds and fruits have enabled?

What features of seeds and fruits have enabled angiosperms to become so widespread? the fruit acts as a protector of the seeds and the seed has “three houses” which includes it own nutritive tissue, allowing it to survive independently for a period of time.

Why it is called double fertilization?

This is called double fertilization because the true fertilization (fusion of a sperm with an egg) is accompanied by another fusion process (that of a sperm with the polar nuclei) that resembles fertilization. Double fertilization of this type is unique to angiosperms.

What are the results of double fertilization quizlet?

Double fertilization produces a diploid sporophyte and a triploid endosperm. … Pollination is the transfer of pollen from the anther to the stigma; fertilization is the fusion of haploid nuclei.

What is double fertilization in animals?

Double fertilization is characterized by the formation of two embryos: the embryo-proper which is diploid, and the fusion product of the central cell with one male gamete which is triploid. This secondary triploid zygote develops into the endosperm (Fig.

What is double fertilization Explain with suitable diagram?

The process of fusion of one male gamete with the egg along with the union of the second male gamete with the two polar nuclei or the secondary nucleus is called double fertilisation. Out of the two male gametes, one fuses with the egg to carry out generative fertilisation or syngamy.

What is triple fertilization?

What is Triple Fusion. Triple fusion is the fertilization of the two polar nuclei in the embryo sac. It occurs during the double fertilization of angiosperms. While one sperm cell fertilizes the egg cell in the embryo sac, the other sperm cell fertilizes the two polar nuclei found in the central cell.

What is the best description of double fertilization in angiosperms?

Of the two sperm cells, one sperm fertilizes the egg cell, forming a diploid zygote; the other sperm fuses with the two polar nuclei, forming a triploid cell that develops into the endosperm. Together, these two fertilization events in angiosperms are known as double fertilization.

Does double fertilization occur in gymnosperms?

Double fertilization is a key event in the life cycle of angiosperms, but is completely absent in gymnosperms. The male and female gametophyte structures are present on separate male and female cones in gymnosperms, whereas in angiosperms, they are a part of the flower.

Which drug is a chemotherapeutic agent derived from Pacific yew that is used in fighting breast and ovarian cancers?

Taxol® (NSC 125973) Paclitaxel, the most well-known natural-source cancer drug in the United States, is derived from the bark of the Pacific yew tree (Taxus brevifolia) and is used in the treatment of breast, lung, and ovarian cancer, as well as Kaposi’s sarcoma.