Question

Discuss the types of reproduction in Kingdom Mycota with examples

Answer 1

• Kingdom Mycota includes fungi. Reproduction in Fungi can be:-

1) Vegetative reproduction:-

a) Fragmentation- Mycelium may break accidentally or due to decay into 2 or more parts.

• Each parts develops into complete mycelium.
• Eg- mushrooms.

b) Budding- Fungus protrudes out at one end.

• The protrusion grows out into a bud and gets separated to form new individual.
• Eg- yeast.

c) Fission- It occurs in unicellular forms where cell divides to produce 2 daughter cells.

• Eg- yeast.

2) Asexual reproduction:-

• Endogenous:- These spores are formed internally within sac by the division of protoplasm.
• E.g. Sporangiospores.

i) Sporangiospores:- A motile spore produced in a sac or sporangium and are unicellular.

• These spores are liberated by breaking the wall of sporangium.

ii) Aplanospore: A non motile spore produced in the sporangium is knows as Aplanospore.

b. Exogenous:- These spores are borne externally on sporophores.

• E. g. Conidia, Oidia.
  

i) Conidia:- These spores are produced on sepecialized hyphae or stock. i.e. conidiphore.

• Conidia may be uni or multicellular.
  
• E.g. Alternaria, Helminthosporium
  

ii) Oidia:- They are produced asexually in chains on the stalk called as oidiophore.

• E.g. Oidia in powdery mildew.
  

3) Sexual reproduction:-

i) Oospores:

• It is the result of union between female gametes i.e. Oogonium and male gametes i.e. Antheridium.
• These spores can resist the adverse conditions.
• E.g. Fungi of sub-division Mastigomycotian.

ii) Ascospores:

• It is a result of union between female gametes. I.e. Ascogonium and male gamete. i.e. Antheridium.
• E.g. Fungi of sub-division Ascomycotina.

iii) Basidiospores:

• These are the sexual spores produced on club shaped structure known as basidium.
• E.g. Fungi of sub-division Basidiomycotina.