Hint: Filamentous devices are finger-like projection, which consists of a core of microfibrous sheaths to help pollen tubes enter the ovule. They are also similar to transferring cells and extracting food from the nucleus. It consists of pectocellulose fibers that evolve in a non-cellulosic sheath.

What are filamentous devices and their functions?

Note: Filamentous devices are finger-like protrusions, which Guides pollen tubes in and helps release sperm. It also helps in the absorption and conduction of food material from the nucleus to the embryo sac.

What does filiform device mean?

: Elongation of synergists at the top of the embryo sac.

Where are the filigree devices?

Filaments are present in synergistic cells of embryo sac. They are finger-like protrusions located near the micropylar end of the embryo sac.

What is the function of the filigree device*?

Option B: Filaments are apparatuses formed by synergists within the embryo sac of angiosperms. The device helps the pollen tube to fertilize the egg.so it helps during the reproduction of angiosperms.

The functions of the filiform appliance are:-

22 related questions found

What is the function of the twelfth class of filiform devices?

In synergetic cells at the end of the micropyle there is a special cell thickening called a filament. After fertilization, when egg cells produce zygotes, they become disorganized.The main function is Guide pollen tubes into synergetic cells and release sperm cells.

What is the function of the Filament APP?

Answer: (1)

Filamentous system Assists in entering the pollen tube into the ovule synergistically. Filamentous devices are finger-like protrusions consisting of a closed microfibrillar core in a sheath. Filamentous devices resemble metastatic cells, meaning metabolites move over short distances.

What is the function that the filamentous appliance gives it?

The finger-like protrusions present on synergists are called filaments.it Helps in the absorption and conduction of food materials from the nucleus to the embryo sac. They also help guide the movement of the pollen tubes towards the embryo sac.

Why are filigree devices important?

Filamentous organs play an important role, it Directs pollen into synergists at the micropylar end of the embryo sac. The pollen tube shows chemotaxis, and the filamentous organ secretes chemicals that guide the pollen tube towards the embryo sac.

What does filamentous mean?

Filamentous, a common term used in botany to describe plants linear shape. FilamentousOr a filament catheter, a medical device whose components or parts are all cylindrical and more or less uniform in size. … Insect antennae shape. Linear crystal structure.

What does synergist mean?

: One of two small cells located near the micropyle of the angiosperm embryo sac.

Where is the filigree device located and what is its function?

this The synergistic cell wall forms an extremely thick structure at the micropore end called filigree devices. It bears several finger-like protrusions in a synergistic cytoplasmic structure. Location of the filamentary device – the micropylar end.

What is the ploidy of filamentous organs?

Full answer:

Synergetic cells are diploid because functional megaspores are formed by mitosis of all three cells (synerocytes, polar nuclei, and antipodal cells), which are Haploid (n).

What is the role of synergists and filaments?

The degenerated synergists serve as the excretion site for male gametes in pollen tubes. In some plants, synergists act as haustors.Synergistic filamentous organ Helps in the absorption and transfer of nutrients from the nuclei to the embryo sac.

What is a synergist?

Hint: Boosters are One of two small cells found near the egg in the mature embryo sac of flowering plants. They aid in the fertilization process. Two cooperating cells act as signal sources to guide pollen tubes. The nutrient center consists of three pairs of podocytes.

Where will you find filiform instruments?

Filamentous devices are located in The tip of the megasporangium or embryo sac. At the tip of the micropyle end, we can find a thickened structure called a filament.

Which of the following has a filamentous device?

Full answer:

1) synergistic cell wall Highly thickened structures called filaments form at the ends of the micropyle. It consists of many finger-like protrusions that protrude into the synergistic cytoplasm.

What is the main function of the filamentous organ present in the micropylar part of the ovule?

Answer (e) it Guide pollen tubes into synergists and expel male gametes.

Is Megasporangium the same as Nucellus?

Full answer:

Megasporangia can considered equivalent to an ovule. Ovules have integumentary megasporangia present. … Nucleus forms the main body of the ovule and parenchyma is present. The female gametophyte, also known as the embryo sac, is present in the nuculus.

Which is called the female gametophyte?

female gametophyte also commonly known as embryo sac or macrogametophyte. The male gametophyte, also called pollen grain or microgametophyte, develops within the anther and consists of two sperm cells enclosed within a vegetative cell (Gifford and Foster, 1989).

What are the two nuclei at the end of the pollen tube called?

The two nuclei at the end of the pollen tube are called ovaries and eggs.

What is polygamy?

marriage. definition.This is Fertilization process of pollen tube through integument into ovarian sac. This is the fertilization process by which the pollen tube enters the ovarian sac through the micropyle.

What is the role of the filigree shaala?

Explanation: Synergists have a filamentous organ, Helps guide the pollen tube into the embryo sac.

What is Perisperm Toppr?

The outer skin is The vegetative tissue surrounding the embryo in some seeds, which develops from the nucleolus of the ovule. After double fertilization, the nucellar remnant of the ovule in the mature seed is called the ectosperm.

Why is it called double fertilization?

(4) One male gamete combines with the egg cell to form the zygote, and the second male gamete combines with the two polar nuclei to form the endosperm. (5) Thus, because Two nuclei are involved in the fertilization processhence the name double fertilization.