What are Synergids and Antipodals?
Antipodals and synergids are the part of female gametophyte/embryo sac that develops from meiosis in megaspore mother cell, i.e., gametogenesis.
What is the role of Synergids and filiform apparatus in fertilization?
The main functions of the synergids are: The chemical substances secreted by the filiform apparatus of the synergids helps in attracting the pollen tube towards the embryo sac. The filiform apparatus of the synergids helps in the absorption and transfer of the nutrients from the nucellus into the embryo sac.
What is the role of filiform apparatus of Synergids?
– It helps in the entry of pollen tubes in synergids. – It helps in transport of metabolites at short distances. Thus the correct answer is B, Filiform apparatus helps in the entry of pollen tubes into a synergid.
What are Antipodals cells?
antipodal cells The three haploid cells in the mature embryo sac of flowering plants that are situated at the opposite end to the micropyle.
What is the function of the Antipodals cells in an embryo sac?
– Antipodal cells play a very important role in the embryo sac. They are responsible for the supply of nutrition for the whole gametophyte and also take part in the supply of nutrition during embryo formation.
How many Antipodals are there?
Antipodals – They are the vegetative cells of the embryo sac. They are three in number.
What is the function of Antipodals?
The function of the antipodal cells is to provide nourishment to the egg cell. It is rich in lipid content. They also form the basis of endosperm production. The synergids consists of filiform apparatus which guides the pollen tube and the pollen tube discharges its content into one of the synergids.
What is the function of Synergids and Micropile?
(b) (i) Synergids : Synergids have special cellular thickenings at the micropylar tip called filiform apparatus which plays an important role in guiding the pollen tube into the synergid. (b) Micropyle : It helps pollen tube to enter the ovule and then enters one of the synergids through the filiform apparatus.
What is the function of filiform apparatus in an Angiospermic embryo sac?
Option B: Filiform apparatus is an apparatus that is formed inside the embryo sac of the angiosperms by the synergid cells. This apparatus helps the pollen tube towards the egg for fertilization to happen. Thus it helps in the reproduction process of the angiospermic plants.
What is the main function of filiform apparatus present at micropylar end of ovule?
Answer (e) It guides the entry of pollen tube into a synergid and discharge the male gametes.
What does Synergids mean?
Definition of synergid : one of two small cells lying near the micropyle of the embryo sac of an angiosperm.
What is Antipodals in embryo sac?
The antipodal cells of the female gametophyte sometimes acquire glandular properties, as may cells of the nucellus surrounding the embryo sac. In some species the embryo itself develops a suspensor that penetrates the tissues of the parent sporophyte and acts as an absorbing organ.
