Reproduction Of Fungi, Caselike Fungi & Saclike

FungiBy: Saad Ejaz & Omar Auda

What Are Fungi?A eukaryotic,

heterotrophic

organism devoid of

chlorophyll that

obtains its nutrients

by absorption, and

reproduces by

spores.

What Are Spores?Spores are reproductive cells

Asexual (product of mitosis) Sexual (product of meiosis) in origin.

Fungi & ReproductionMost species in the Fungi Kingdom either produce sexually, or asexually by means of spores.There are approx. 100,000 species of fungi.Fungi are grouped into categories based on their pattern of sexual reproductionThese divisions are called phyla.

There are 4 Structures:1. Caselike Structure2. Saclike Structure3. Clublike Structure4. Imperfect Fungi

Zymgomycota Ascomyota Basidiomycota

Caselike Fungi

Division Zygomyota

Caselike Fungi (Z Group)Most fungi in the Zygomycota division are terrestrial saprobes.A common fungus of this division is bread mould.

Caselike Fungi: ContinuedIf the conditions are favourable they reproduce asexually.

They do this by first growing mycelium over the food, which then produce hyphae.The hyphae on food can be characterized into two types, stolons, which grow on the surface of the food. And rhizoids, which grow deep into the food, and give nutrients to the fungus.And rhizoids, which grow deep into the food, and give nutrients to the fungus.

Caselike Fungi: ContinuedThese sporangium release spores, which with wind currents move to other food sources to start reproducing again.

Caselike Fungi: ContinuedIf the conditions are favourable they reproduce sexually.

They develop two types of hyphae.They are called plus and minus.Their nuclei join together to form zygospore.The zygospore doesn’t do anything until favourable conditions are met.

Saclike Fungi

Division Ascomycota

Saclike Fungi (A Group)Fungi in this division are characterized by how they form a saclike structure in reproduction.

Saclike Fungi (A Group)Fungi in this division are characterized by how they form a saclike structure in reproduction.They produce spores that are characterized into two types.

Ascospores, which are spores, created from sexual reproduction, and are produced from an ascus or sac.And conidia, which are spores, created from asexual reproduction, and are produced in chains at the tips of special types of hyphae.

YeastYeasts are a type of this division that can also reproduce sexually or asexually depending on the conditions.They reproduce asexually when the conditions are favourable.

They do this by budding, which is the process of the yeast cell dividing its nucleus into bulges of its membrane to create other yeast cells.

Yeast ContinuedThey reproduce sexually when the conditions aren’t favourable.

They do this by forming ascospores, which do nothing until favourable conditions are met, and can reproduce asexually.

QuestionsWhat are spores main function?What does being a saprobe mean?What are stolons?When do Caselike fungi reproduce sexually?How do yeast reproduce asexually?