What is Monocolpate condition?
Monocolpate pollen grains have a single furrow on one side.
What is Tricolpate pollen?
A tricolpate pollen grain is one that has three apertures, equally spaced and approximately parallel to the polar axis of the grain (Figure 8.2; see Chapter 12). FIGURE 8.2. Transformation from monosulcate to tricolpate pollen grain, the latter an apomorphy of the Eudicots.
What does a mature pollen grain represent?
The pollen grain represents a male gametophyte. pollen grain represents a male gametophyte. The pollen Grain is secreted from the anther of the plant. The anther is the male reproductive organ of the flowers.
What type of pollen grains are found in monocots?
Pollen grains are mostly uniporate (with single germ pore) in monocots and triporate (with three germ pores) in dicots.
What is composition of intine?
The intine, or inner layer, consists primarily of cellulose and pectins. The exine, or outer layer, is composed of a highly decay-resistant chemical called sporopollenin.
Does pollen grain represent male gametophyte?
Pollen grains represent the highly reduced haploid male gametophyte generation in flowering plants, consisting of just two or three cells when released from the anthers. Their role is to deliver twin sperm cells to the embryo sac to undergo fusion with the egg and central cell.
How many mother cells pollen should undergo?
16 pollen mother cells
During the meiotic division, each pollen mother cell gives rise to four haploid pollen grains. Thus, to produce 64 pollen grains the 16 pollen mother cells are required.
How are pollen grains liberated?
Pollen grain is liberated at two or three celled stage.
What does socialism mean to you?
What does socialism mean? Socialism is an ideology or system based on the collective, public ownership and control of the resources used to make and distribute goods or provide services. This involves ownership of such things not by private individuals but by the public (the community as a whole), often in the form of a centralized government.
What is the form of ownership in socialism?
Such a form of ownership is granted through a democratic system of governance. Socialism has also been demonstrated through a cooperative system in which each member of the society owns a share of communal resources. The rule of engagement in a socialistic system is that each person receives and contributes according to his ability.
What is a socialist person called?
The noun socialist refers to someone who supports socialism. It can also be used as an adjective to describe things involving socialism or that operate under socialism, such as countries or economies.
How is Socialism demonstrated through a cooperative system?
Socialism has also been demonstrated through a cooperative system in which each member of the society owns a share of communal resources. The rule of engagement in a socialistic system is that each person receives and contributes according to his ability. For this reason, individuals in a socialistic society tend…