This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!
Endosperm is a nutritive tissue and it is triploid.
What structure is triploid 3n?
The egg also contains a haploid set of chromosomes, while the zygote is diploid (with 2 sets of chromosomes) and the endosperm is triploid (with 3 sets of chromosomes).
Which part of the seed is triploid 3n?
In the life cycle comparison, the only cells that are triploid are in the endosperm of a seed plant. Endosperm is formed by the fusion of a haploid sperm (n) with two haploid polar nuclei (n + n) resulting in triplolid endosperm cells (n + n + n = 3n).
Which of the following part is triploid?
The endosperm is a tissue produced inside the seeds of most of the flowering plants following double fertilization. It is triploid (meaning three chromosome sets per nucleus) in most species, which may be auxin-driven.
Is endosperm a triploid?
An endosperm formed in sexual reproduction between diploid parents is typically triploid, with a 2 : 1 ratio of maternal genetic material (denoted as 2m : 1p).
Haploid, diploid, triploid and tetraploid plants
32 related questions found
Why is the endosperm 3n?
Endosperm development and its role in seed development
Cells of the endosperm are triploid (3n) and arise from the fusion of the polar nuclei (2n) with the sperm nucleus (n) through a double fertilization event. The development of the endosperm is divergent among plant species.
Is Microspore a triploid?
Microspores are haploid, and are produced from diploid microsporocytes by meiosis.
Which of the foll is a triploid tissue?
Answer: Endosperm is a triploid tissue in angiosperms, because double fertilization results in the formation of a diploid zygote and a triploid endosperm.
Which one is an example of triploid tissue?
Because maize and lily are angiosperm plants, in which endosperm is formed by fusion of one diploid polar nucleus and haploid male gamete, thus this tissue is triploid.
Which is a triploid tissue?
In angiosperms, the endosperm is formed from triple fusion in which male gamete fuses with a diploid secondary nucleus resulting in the formation of a triploid primary endosperm mother cell which then forms the endosperm. Hence endosperm is a triploid tissue.
Which cell is triploid in a typical angiosperm plant?
In angiosperms, the zygote is diploid while the primary endosperm cell is triploid.
How is triploid formed in Angiospermic plant?
As for the mechanism of triploid formation among diploid populations, it is generally accepted that a reduced gamete with one set of chromosomes fuses with an unreduced gamete with the somatic number of chromosomes, producing a triploid zygote.
Which of the following is a triploid tissue in angiosperm?
The fusion of secondary nucleus with the second male gamete is triple fusion and the resultant nucleus is triploid or 3 n.
Which is the triploid structure?
Three sets, or 69 chromosomes, are called a triploid set. Typical cells have 46 chromosomes, with 23 inherited from the mother and 23 inherited from the father. Triploidy occurs when a fetus gets an extra set of chromosomes from one of the parents. Triploidy is a lethal condition.
Is endosperm haploid or diploid or triploid?
As endosperm results by fusion of a diploid nucleus and a haploid gamete hence it is a triploid structure.
What is polar nuclei in plants?
A mature megagametophyte of an angiosperm. Description: A mature megagametophyte of an angiosperm. … At this stage of development, the egg is ready for fertilization by the sperm from a pollen grain.
What is Scutellum in plant?
The scutellum is thought to be a modified cotyledon, or seed leaf. In grasses this seed leaf never develops into a green structure but serves only to digest endosperm and transfer nutrients to the rest of the embryo.
Which plant contains remnant Nucellus ?
- Black pepper.
Which of the following represents the female gametophyte in angiosperms?
Female gametophyte of angiosperms is represented by embryo sac. The polygonum type of embryo sac is eight nucleate and seven celled. It is found in more than 80% plant families.
Which is triploid tissue in Fertilised ovule?
The triploid tissue in a fertilised ovule is endosperm which is developed from Primary Endosperm nucleus. This triploid condition is achieved by fusion of three haploid nuclei called triple fusion. The three haploid nuclei are one male gamete and two haploid polar nuclei.
Which is triploid tissue in a Fertilised ovule How is the triploid condition achieved?
The triploid tissue in the ovule is the endosperm. Its triploid condition is attained due to the fusion of two polar nuclei and one nucleus of male gamete also referred to as triple fusion.
What are the main layers of a plant explain?
The three kinds of mature tissues are dermal, vascular, and ground tissues. Primary dermal tissues, called epidermis, make up the outer layer of all plant organs (e.g., stems, roots, leaves, flowers).
What is Megaspores and microspores?
Microspores are spores that are specifically male and give rise to male gametophytes; megaspores, on the other hand, are specifically female and give rise to female gametophytes. … The fluctuation between the diploid (sporophyte) and haploid (gametophyte) life stages that occurs in plants.
What is the ploidy of microspores?
Microspores are formed from microspore cells (MMC). MMC may be a diploid cell that undergoes meiosis to make four haploid microspores which are arranged during a tetrad. … This tells us that the ploidy of microspore tetrad cells is haploid. The n represents the haploid condition.
Are microspores motile?
Microspores divide and become immature pollen spores (pollen grains with air sacs. Eukaryotic, multicellular, autotroph, freshwater, No vascular tissue, no Alt of gen, no micro/mega spores produced in sporangium, no free living sporophyte, free living gametophyte,has antheridia, no archegonia, yes motile sperm.