What is Monothecous and Dithecous anther?
Monothecous anthers have a single lobe with two pollen chambers in it. They are also called bisporangiate as they have two pollen chambers. Dithecous anthers have two lobes with two pollen chambers in each. As they have four pollen chambers they are also known as tetrasporangiate.
Which of the following is an example of Monothecous anther?
Hibiscus rosa-sinensis/ Malvaceae.
What is Dithecous anther Class 12?
What are dithecous anther ? Dithecous anther are those anthers which have two anther lobes connected by a connective.
What is a Dithecous?
Dithecous. (Science: botany) Having two thecae, cells, or compartments. Origin: Pref. Di- – theca.
What do you mean by Tetrasporangiate anther?
Tetrasporangiate suggests four pollen sacs. Pollen containing chamber that has four sacs is known as tetrasporangiate anther. Example: Angiosperm posses tetrasporangiate anther. answer. Ad.
What is Monothecous condition?
Monothecous stamen: A stamen consisting of a single lobe is called as monothecous or unicelled stamen. Family Malvaceae: The flowers have solitary Inflorescence solitary or cyme inflorescence. The flowers have epicalyx. Anthers are monothecous.
Is anther of hibiscus are Monothecous?
The presence of monothecous anther is the character of the Malvaceae family. Hibiscus rosa-sinensis commonly called china rose is a member of the Malvaceae family and thus, shows the presence of monothecous anther. So, the correct answer to the given question is option A, i.e., Hibiscus rosa-sinensis, Malvaceae.
Is anther called microsporangium?
What is Microsporangium? Male plant gametophytes usually develop and reach maturity in the anther of a plant. The microsporangia are the part of the anther in which the pollen or microspores are produced.
What do u mean by Dithecous anther?
Hint: Dithecous anther is the anther that contains two anthers lobes which are connected to each other by a connective or a sterile band. Examples are angiosperms and crotalaria mustard, solanum.
Why anther is called Dithecous?
Due to the presence of two thecae in a lobe, then the anthers of angiosperms are called dithecous. Microsporangia is the structure that is mainly responsible for the production and releases of pollen grains. The thecae acts as the microsporangium.
Why anther is called Tetrasporangiate?
The anther is four- sided i.e. it has four locules consisting of 4 microsporangia located in each locule which develops further and becomes the pollen sacs. Thus, the anther is tetrasporangiate because it’s four microsporangia. – Each stamen is composed of a slender stalk- like filament that supports the anther.
What is a typical anther?
Anthers typically consist of two compartments called thecae (singular theca), with each theca containing two microsporangia (the fusion product of which is a locule). (Thus, anthers are typically tetrasporangiate.) The typical anther is dithecal, having two thecae with typically four microsporangia.
Which is an example of a dithecous anther?
What are dithecous anther ? Dithecous anther are those anthers which have two anther lobes connected by a connective. e.g Mustard. What are chasmogamous flowers ?
Are there any special names for monothecous anthers?
To avoid this verification in future, please log in or register. The anther which contain only one lobe are called monothecous anther. monothecous anthers are bisporangiate (contain two pollen sacs) Is there any special name for the connective that connects 2 anther lobes in dithecous anther?
How many mother cells does a bilobed dithecous anther have?
Total pollen sacs or microsporangia in bilobed dithecous anther =4 Each pollen sac has 100 microspore mother cells. So total microspore mother cell in 4 pollen sacs=4*100=400 Meiosis produces 4 pollen grains or male gametophytes.
What kind of structure is the anther in a flower?
Definition of Anther. The anther is a structure found in the male reproductory part of the flower refers to as “ Stamen ” or “ Androecium ”. It has a knob-like structure, which usually consists of two lobes joined together by the connective tissue. It carry the pollen grains within the microsporangia, which further develops into a pollen sac.