What is the difference between Endospore and Exospore?

Endospore is the common type of spores produced mainly by bacteria. Exospores are produced in the eukaryotic cells of fungi, algae and cyanobacteria. Endospores are formed inside the mother cell, whereas, exospores are formed towards the end of the mother cell and released as bud.

How does sporulation occur in bacteria?

Sporulation begins with the duplication of the bacterial genome. The second copy and some of the cytoplasm is then enveloped in an in-growth of the membrane that surrounds the bacterium. The result is essentially a little spherical cell inside the larger bacterium.

How does amoeba reproduce by sporulation?

Sporulation in Amoeba Amoeba reproduces by the formation of spores internally, under unfavourable conditions. It begins with the breakdown of the nuclear membrane and releases chromatin that blocks into the cytoplasm. The newly produced nuclei is surrounded by cytoplasm to form amoebulae.

Which type of reproduction is sporulation?

(1) Asexual sporulation, whereby adult organisms produce single-celled diploid spores that grow into adults themselves. (2) Sexual sporulation, whereby adult organisms produce single-celled diploid spores that divide into haploid gametes.

Can bacteria produce Exospore?

Algae which produce exospore are Chamaesiphon and Stichosiphon. Fungal spores which produce exospore are Conidiophores. Bacteria that produce exospores are Actinomyces, Streptomyces, and Actinobacteria. Cyanobacteria which produce exospore are Chamaesiphon.

What causes sporulation?

Essentially, sporulation refers to the formation of spores from vegetative cells during unfavorable environmental conditions. As such, it may be described as an adaptive response that allows the organism to survive given adverse conditions (radiation, extreme heat or cold, lack of nutrition etc).

Why is sporulation not a form of reproduction?

Complete answer: The spore of bacteria is formed in response to adverse conditions and constitutes a durable form with minimal metabolism which can usually survive starvation as it is formed from the original cell and no new cell is formed it is not considered reproduction.

What is an example of sporulation?

They are non-motile spores produced inside the sporangia. They are generally dispersed by wind and germinate to produce new mycelium. For example, Rhizopus, Mucor.

What is vegetative cell?

Any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes; somatic cells are produced from preexisting cells;.

How does the endospore and the exospore develop?

Exospore is another resistant bacteria produced mainly by fungi and algae to reproduce under unfavorable conditions. Exospores develop from the end of the mother cell by cell division. The separation of the exospore occurs by the formation of a septum between the mother and the daughter cell. The exospore comes out as a bud.

What makes up the exosporium of bacterial spore?

In some bacterial spore, exosporium is made up of polysaccharide and lipid. Spore coat consists of spore specific protein, mainly contains cysteine and hydrophobic amino acids. Due to presence of these aminoacids,spore are resistant to adverse environmental condition.

When do spores germinate in a bacterial spore?

Spore is metabolically dormant structure produced during unfavorable condition by the process called sporulation. Sporulation occur during late log phase or early stationary phase. Under favorable condition spores germinate to give vegetative cell.

When does a vegetative cell turn into a spore?

Endospore: It is produced within the bacterial cell. 2. Exospore: During unfavorable condition, vegetative cell converts into spore by the process known as sporulation Sporulation can be divided into several stages. In Bacillus subtilis, entire process of sporulation takes 8 hours to complete from stage 0 to stage VII