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!
In a flowering plant, it is the naturally occurring bundle of pollen grains that are attached to one another. They are formed in nature by a single anther, but are frequently transferred between flowers during the process of pollination.
Which plant does pollinium have a presence in?
A pollinium, often written as pollinia, is a coherent mass of pollen grains in a plant that is the product of only one anther yet is transported during pollination as a single unit. The term pollinium comes from the Latin word pollinare, which means “to pollinate.” This is something that may be observed rather frequently in plants such as orchids and numerous varieties of milkweed.
What exactly is an example of pollinium?
Pollinium is a collection of pollen grains that have become cohesive and is produced by plants that resemble orchids. Pollination is essentially assisted by the insects known as pollinia. example – the blooms of calotropis have pollinia in their structures.
Where can one discover pollinium?
A pollinium is a cohesive mass of pollen grains in a plant that are the result of just one anther yet are transferred as a single unit during the process of pollination. This mass of pollen grains is called a pollinium. This is something that can be observed rather regularly in plants like orchids and many varieties of milkweed. Some of the orchids contain pollinia that are covered with wax.
Which of the following plants has a structure that resembles a pollinium?
Flowers such as calotropis and orchids have been observed to have these. Only insects are able to collect the pollen grains that are contained within the pollinia in this process. As a result, the pollination of these flowers is carried out by insects. Thus, the option C is the one that should be chosen.
What exactly is the element of POLLINIUM? What exactly does the term POLLINIUM mean? Meaning, explanation, and etymology of the term POLLINIUM
22 questions found in related categories
What exactly is meant by the term “cantharophily”?
Cantharophily is essentially a form of flower cross-pollination that is typically carried out by beetles that feed on the flower’s nutrient-rich tissue or the pollen of the flower. There is no evidence of this in the flower or beetle populations. It is only found naturally in a select few plant species, such as cycads and calycanths.
Which family of plants are known to contain pollinia?
The family Poaceae is part of the larger group Angiosperms, which contains the genus Pollinia.
Where exactly can one find Gynostegium?
To address your question in its entirety, the family Asclepiadaceae include both Gynostegium and Pollinia. Wax plant (Hoya), Calotropis procera, Cryptostegia grandiflora, and other related species are all members of the Asclepiadaceae family of plants. The majority of this family’s members can be found living in tropical climates all over the world.
What are the components that make up intine?
Intine, also known as the inner layer, is made up almost entirely of cellulose and pectins. The exine, also known as the outer layer, is made up of a substance called sporopollenin, which is extremely resistant to degradation.
What function does sporopollenin serve in the cell?
The pollen grains are shielded from the elements by sporopollenin, which prevents damage from factors like as high temperatures and precipitation. Sporopollenin is the most durable organic material ever discovered on Earth, and it is responsible for the formation of the exine’s outer covering.
What what is the Nemec phenomenon?
In the petaloid anthers of Hyacinthus orienta/is, NEMEC (1898) found pollen grains that resembled embryo sacs filled with pollen. He believed that they resulted from three consecutive divisions of the vegetative nucleus, which led to the formation of the generative nucleus. The Nemec phenomenon is an expression of the predominance of female potency in microspores over male potency.
Is pollinia present in calotropis?
Because of the milky latex that it produces, the calotropis plant, also known as ak in the native language, is classified as a milkweed. The calotropis is a widespread weed that can be found in North India in large quantities. The production of Pollinia is the unusual feature that can be observed in the pollen grains of this plant.
What causes the mother cell of a microspore to form?
mother cell of the microspores
A cell found in plants that is diploid and is capable of undergoing meiosis in order to produce four haploid microspores. Mitosis is the process that causes the formation of microspore mother cells within the pollen sacs of the anthers of flowering plants. The microspores that these cells create eventually mature into pollen grains….
What exactly is meant by the term “Gynobasic”?
When the style emerges from the middle to the basal region of the ovary, this is known as a gynobasic style. The ovary has a hollow or sunken area in the middle of it, which is where the style develops. There is evidence of it in Salvia and Ocimum. The Labiatae family, sometimes known as the mint family, is characterized by its gynobasic structure.
Which flower possesses the superior ovary?
There is a higher quality of ovary in fleshy fruit varieties such as real berries, drupes, and other similar fruits. A hypogynous flower is one in which the petals are arranged in this manner.
How does intine come to be?
Immediately following the differentiation of the endexine comes about the formation of the bilayered intine… Following this, the inner endexine undergoes a process that is regarded as the transition of the inner endexine into intine. This process involves the inner endexine becoming intensely penetrated by intine matrix chemicals.
When it reaches maturity, what happens to Tapetum?
Either it is consumed or it deteriorates.
What are intine and exine, respectively?
Exine is the outer layer of a pollen grain that contains sporopollenin, whereas intine is the interior layer of a pollen grain that contains cellulose and pectin. This is the primary distinction between exine and intine. The outer layer, known as the exine, is more durable, robust, and robust than the inner layer, known as the intine.
Which plant contains Gynostegium in its leaves?
In plants belonging to the milkweed family, the gynostegium is a characteristic feature. It is a complicated structure that results from the fusing of the stigmatic surfaces, styles, and stamens of the flower.
What exactly is meant by the term gynoecium?
The gynoecium is the whorl that is located deepest within the center of a flower. It is made up of (one or more) pistils and is often surrounded by the reproductive organs that produce pollen, which are the stamens, which are referred to collectively as the androecium.
What exactly does epipetalous mean?
Epipetalous flowers are ones in which the androecium (anther) is linked with the petals of the flower rather than being separate from them. However, in certain plants, like the lily, the sepals and the petals are the same structure, and this structure is referred to as the perianth. When the anther is attached to the perianth, this structure is referred to as the epiphyllous.
Where does the term pollinia come from?
Both the Orchidaceae and the Asclepiadaceae plant families are responsible for the evolution of the cohesive masses of pollen that are known as pollinia…. It is possible for the stalk that connects a pollinium to the viscidium to be made up of a caudicle (which originates from sporogenous tissue) and/or a stipe (which originates from vegetative tissue), or it may not exist at all.
Which family include members affected by the polyadelphous condition?
Carpophore is a link of stalk that is present between two carpels. It is created owing to growth of thalamus between carpels in the flower, as is the case with coriander. Carpels are the reproductive structures of flowers. As a result of the fact that the stamens in a flower are a component of the androecium, the polyadelphous state is connected to the androecium. Thus, the response that should be chosen is option D.
Where may one obtain stomium?
In most cases, it is an region of cells with thin cell walls that have ruptured as a result of the surrounding tissue becoming drier. In ferns, the stomium can be found beneath the annulus, while in seed plants, it can be found in between the pairs of pollen sacs.