Asexual Reproduction in Unicellular Organisms

Vocabulary flashcards detailing asexual reproduction methods like binary and multiple fission in unicellular organisms and specific cell organelles.

Binary Fission

A process of asexual reproduction where a parent cell divides to form $2$ similar daughter cells either by mitosis or amitosis.

Simple binary fission

A form of division occurring in any plane due to the organism's lack of a specific shape, as seen in Amoeba.

Transverse binary fission

The specific axis of division performed by Paramoecium.

Longitudinal binary fission

The specific axis of division performed by Euglena.

Prokaryotes

A group including Bacteria that perform asexual reproduction by binary fission.

Protists

A group including Amoeba, Paramoecium, and Euglena that perform asexual reproduction by binary fission.

Eukaryotic cell-organelle

Structures Tike mitochondria and chloroplasts that perform asexual reproduction by binary fission.

Favorable conditions

Environmental periods characterized by the availability of abundant food material during which binary fission is usually performed.

Multiple Fission

Asexual reproduction performed by Amoeba during adverse conditions where many nuclei are formed by repeated nuclear divisions in a cyst.

Cyst

An encysted Amoeba or protist formed by creating a protective covering around the plasma membrane during adverse conditions or lack of food.

Amoebulae

Many small organisms formed through cytoplasmic division within a cyst during multiple fission.

Pseudopodia

The structures that Amoeba stops forming to halt movement during adverse conditions before becoming rounded.

Adverse condition

Situations such as a lack of food that trigger Amoeba to undergo multiple fission and form a cyst.

Activity observation timing

In the pond water activity, paramecia performing binary fission should be observed early in the morning on the $4th$ day.

Axis of fission

The plane of division which varies among different protists, being simple, transverse, or longitudinal.