Is the gymnosperm endosperm haploid or diploid?

haploid tissue
The endosperm of the gymnosperm is a haploid tissue. In gymnosperm, there are two sperm nuclei of which one degenerates and the endosperm formed is not a real endosperm but a nutritive tissue for the growth and germination of the embryo.

Do gymnosperms have triploid endosperm?

The endosperm of gymnosperms is haploid. It is a pre-fertilization tissue and is equivalent to female gametophyte, hence it is haploid in nature but in angiosperms it is post-fertilization tissue and is generally triploid in nature.

Is endosperm haploid or diploid or triploid?

Because it is formed by a separate fertilization, the endosperm constitutes an organism separate from the growing embryo. About 70\% of angiosperm species have endosperm cells that are polyploid. These are typically triploid (containing three sets of chromosomes), but can vary widely from diploid (2n) to 15n.

Why endosperm in gymnosperm is haploid?

The endosperm of gymnosperms is haploid as it is produced by the female gametophyte before fertilization takes place. The female gametophyte is gametophytic (haploid) in nature and because fertilization does not take place, thus the endosperm is haploid in nature.

What forms endosperm in gymnosperm?

The endosperm of gymnosperm is formed by triple fusion.

What is endosperm gymnosperm?

Endosperm is a tissue produced inside the seeds of most flowering plants around the time of fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. In gymnosperms the endosperm is haploid in nature.

Are gymnosperms triploid?

Gymnosperms have helped endosperm and angiosperm have triploid endosperm.

How are angiosperms triploid?

Double fertilization is a distinctive feature of angiosperms. Each ovule receives a pollen tube that delivers two sperm cells to the embryo sac. One sperm fertilizes the egg cell, generating the diploid zygote, while the other sperm fertilizes the central cell giving rise to endosperm that is usually triploid.

Do gymnosperms have Antheridia and Archegonia?

Male sex organs, antheridia and female sex organs archegonia is present in bryophytes. In gymnosperms, antheridia are reduced. The male gametophyte consists of archegonia which do not possess neck canal cells. In angiosperms, archegonia and antheridia are absent.

Which of the following is a triploid tissue?

Endosperm
Endosperm is a nutritive tissue and it is triploid.

Why is endosperm triploid?

Endosperm of angisperms develops from the central cell of embryosac where two polar nuclei fuse to form a secondary nucleus. This diploid nucleus of central cell fuses with one of the two male gametes . Thus, the endosperm is formed this triploid nucleus and becomes triploid.

Is endosperm found in gymnosperm?

Gymnosperms lack a real or true endosperm. In them, double fertilization is not seen. Such an endosperm of gymnosperms are a product of the pre-fertilization tissue and are haploid. It can be equated to the female gametophyte hence the haploid nature.