Focuses on key groups within Protista, including euglenoids, slime moulds, and protozoans, covering their unique features and classification.
Slime-mould spores possess true walls, are extremely resistant and can survive for many years under adverse conditions. They are dispersed by air currents.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Amoeboid protozoans move and capture prey by forming pseudopodia. Some marine amoeboid forms also possess silica shells on their surface.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Ciliated protozoans possess numerous cilia. The coordinated movement of rows of cilia steers water carrying food into a cavity called the gullet. Paramoecium is an example.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Trypanosoma is a flagellated protozoan. Members of this group may be free-living or parasitic and possess flagella; parasitic forms can cause diseases such as sleeping sickness.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Amoeboid protozoans move and capture their prey by extending pseudopodia, or false feet. Amoeba is a common example of this group.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Euglenoids such as Euglena lack a cell wall. Instead, they possess a protein-rich layer called the pellicle, which makes the body flexible.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Slime moulds are saprophytic protists that move over decaying twigs and leaves and engulf organic material.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
During unfavourable conditions, the plasmodium forms fruiting bodies that bear resistant, air-dispersed spores at their tips.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Plasmodium is a parasitic sporozoan with an infectious spore-like stage in its life cycle and causes malaria.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Amoeboid protozoans use pseudopodia for movement and food capture. Ciliated protozoans use coordinated cilia to direct food-bearing water into a gullet, while sporozoans possess an infectious spore-like stage in their life cycle.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Paramoecium is a ciliated protozoan. Coordinated movement of its numerous cilia directs water containing food into a cavity called the gullet.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
Amoeboid protozoans use pseudopodia for movement and food capture. Sporozoans possess an infectious spore-like stage; Plasmodium is the example given for this group.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Euglenoids Slime Moulds Protozoans
