Compare spirogyra and amoeba on the basis of group they belong to,complexity of the body,nutrition and mode of reproduction???

Dear Student,


Kingdom: Eukaryota 
Class: Tubulinea
Order: Tubulinida
Family: Amoebidae
Genus: Amoeba

Amoeba is a unicellular protozoan that does not have definite shape. Amoeba is a single-celled organism found in puddles, lake water, pond water etc. It has a cell membrane, a round nucleus, and many small vacuoles.  It forms finger-like projections called     pseudopodia     (meaning false feet). Pseudopodia help the     Amoeba    in moving and capturing food.


An Amoeba feeds on algae, rotifiers, protozoans, and even other small Amoeba. It forms finger-like projections called pseudopodia (meaning false feet). Pseudopodia help the Amoeba in moving and capturing food.






When an Amoeba senses its prey, it pushes out its pseudopodia around its prey and engulfs it. The food thus eaten gets trapped in the food vacuole. 

Digestive juices are secreted inside the food vacuole in an Amoeba. Theses juices act on the food and break it down into smaller components. The digested food is later absorbed by the Amoeba for growth, maintenance, and multiplication. The waste material or undigested food is then expelled out of the body.


Amoeba reproduces by a special means of asexual reproduction called binary fission. In this process, the nucleus of Amoeba first divides to form two daughter nuclei. Later the body ofAmoeba splits into two halves, each half receiving its own nucleus. This leads to the formation of the two daughter Amoebae.


Kingdom: Protista (Chlorophyta) 
Phylum: Chlorophyta
Class: Zygnemophyceae
Order: Zygnematales
Family: Zygnemataceae
Genus: Spirogyra

A filamentous freshwater green alga containing spiral bands of chloroplasts.

Spirogyra is an autotrophic algae. It contains chlorophyll and can prepare its own food by the process of photosynthesis.

Spirogyra can reproduce sexually and asexually.
1) Asexual mode: By fragmentation it reproduces asexually. It breaks into smaller fragments and each fragment by mitosis grows into individual plants.
2) Sexual mode: By forming conjugation tubes. Male and female gamete fuses together in the conjugation tube and form zygote. This zygote gets enclosed within thick walls and becomes dormant and now known as zygospore. On getting favorable condition, this zygospore germinates and grows into new spirogyra plant.

Characteristics of spirogyra 
It is found in fresh water.
Its body is made up of long, shiny unbranched filaments which are found floating on the water surface. Its filaments are slippery in touch.

Hope this information will clear your doubts about the topic.

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Its cell wall is made up of two layers. Outer layer is made up of cellulose and inner is made up of pectose.

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