What is Heterothallic condition?
Solution : If plants possess male and female reproductive structures on different plants (unisexual) it is termed as heterothallic condition.
Fungi have evolved two paradigmatic sexual systems: heterothallism and hom*othallism (Figure 1). Heterothallic fungi require two compatible partners for mating to occur, whereas hom*othallic fungi are self fertile with a single individual capable of sexual reproduction even in solo culture.
hom*othallism refers to a condition where hyphae are genetically compatible and therefore forming zygospores from two branches of the same mycelium.
Solution : If plants possess male and female reproductive structure on different plants it is termed as heterothallic condition . <br> If a flowering plants possses unisexuall male flowers with only androecium it is called as staminate flower with only gynoecium it is called as pistilate flower .
Complete Answer:
Heterothallism and hom*othallism are the two conditions of sexual reproduction that can be found in some algae and fungi. In hom*othallism, sexual reproduction requires the same partners; whereas in heterothallism, sexual reproduction occurs in the two compatible partners.
Self-fertility allows for reproductive assurance in species across all major groups of eukaryotes. In fungi, this condition is known as hom*othallism and ensures that a single individual is able to undergo sexual reproduction, even when a suitable mating partner is not present in the environment.
Examples of heterothallism are included for Saccharomyces cerevisiae, Aspergillus fumigatus, Aspergillus flavus, Penicillium marneffei and Neurospora crassa.
hom*othallic refers to the possession, within a single organism, of the resources to reproduce sexually; i.e., having male and female reproductive structures on the same thallus. The opposite sexual functions are performed by different cells of a single mycelium. It can be contrasted to heterothallic.
Definition of hom*othallic
1 : having a haploid phase that produces two kinds of gametes capable of fusing to form a zygote —used especially of algae and fungi. 2 : monoecious.
Monoecious plants have both male and female reproductive structures on the same plant. Monoecious is the same as bisexual or hom*othallic. Monoecious plants have both male and female reproductive parts in the same plant.
What is heterothallic and dioecious?
Heterothallic and Dioecious: When male and female reproductive organs are found on two separate organism.
Solution : Organisnıs in which different individuals or plants carry male or female gametes are called heterothallic or dioecious (eg) papaya <br> Staminate-The unisexual male flower bearing stamens is called staminate <br> Pistillate-The female flower bearing pistil is called pistillate.
Pseudohom*othallism: Self-fertility is the result of the packaging of two, opposite mating type nuclei within a single cell. Independent sexual reproduction results in the production of four binucleate ascospores as seen in Neurospora tetrasperma.
Another form of hom*othallism, called secondary, is observed in ascomycetous yeasts such as Saccharomyces cerevisiae and Schizosaccharomyces pombe. In this case, the hom*othallic behavior results from mating type switching and the presence of three MAT loci in the same genome: one active and two silent.
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| hom*ogametes | Heterogametes |
|---|---|
| This gametes are produced by some algae and fungi. | This gametes are produced in the sexually developed organisms. |
| The common examples are Rhizopus and Ulothrix. | The common examples are gymnosperms and angiosperms. |
Heterothallism is production two types of thallus/hyphae in fungi, designated as the + and the - type. These hyphae undergo nuclear fusion to produce zygote. Example- Rhizopus. Solve any question of Biological Classification with:- Patterns of problems.
The organisms in which male and female reproductive system are present in different individuals are called unisexual organisms. We can also say that the organisms in which male and female sexes are separate are called unisexual organisms. For example, human beings, birds, reptiles, fish etc.
Answer:hom*othallic term use to denote bisexual condition. It also called monoecious. Where as Heterothallic term is use to denote unisexual condition. It also called dioecious. I hope this is very much clear for you guys.
hom*othallic refers to the possession, within a single organism, of the resources to reproduce sexually; i.e., having male and female reproductive structures on the same thallus. The opposite sexual functions are performed by different cells of a single mycelium. It can be contrasted to heterothallic.
Definition of hom*othallic
1 : having a haploid phase that produces two kinds of gametes capable of fusing to form a zygote —used especially of algae and fungi. 2 : monoecious.
What are hom*othallic and heterothallic organisms Class 12?
The main difference between hom*othallic and heterothallic is that hom*othallic is the condition of having both male and female reproductive structures on the same thallus whereas heterothallic is the condition of having male and female reproductive structures in different thalli.
As adjectives the difference between hom*othallic and monoecious is that hom*othallic is (of some algae and fungi) producing male and female reproductive structures in the same plant while monoecious is (botany) that has male and female reproductive organs on the same individual plant (rather than on separate individuals ...
