Protists are beneficial to the ecosystem in generating oxygen as they are photosynthetic & single celled in aquatic system result in higher dissolved oxygen finally other trophic levels are in equilibrium Some protists are natural scavangers & profoundly promote \"decomposition of natural organic matter & dead bodies\" therefore nitrogen balance in the ecosystem Some protist are harmful to the ecosystem and they cause disease to various animal and humans result in ecological imbalance in trophic levels of food web Economic importance of protists: Bio-medical importance of protists: Ecological importance of protists: Ques-4: Green algae: These are the algae, which were originated predominantly from the endosymbiotic cyanobacteria, and these algae possess both plastids and chloroplasts for photosynthesis to perform their nutrients synthesis. Volvox is multicellular green algae and possesses cell differentiation as an evolutionary reproductive adaptation. The cells are associated with flagella outside for motility and vacuoles & chloroplasts inside. They mediate cell –to- cell communication through sensory perception obtained from “eyespot” finally neighboring cells join through “cytoplasmic strands” that promote cell –to-cell communication. Recent research has illustrated that cellular adhesion molecules (Algal-CAMs) are found in multicellular Volvox. However, the bulk transport has not observed in the Volvox, a primitive feature still yet to develop in them. Brown algae are the algae, which possess secondary chloroplasts as their functional units to perform their photosynthesis and these algae are commonly originated from the endosymbiotic red algae. Examples are diatoms. Phylogenetic relationship with land plants: Red algae do not possess property of photosynthesis & as they do not contain green pigments Ques-3: Outer coverings: Sphingolipids Pellicle Phospholipids & glycolipids Solution Protists are beneficial to the ecosystem in generating oxygen as they are photosynthetic & single celled in aquatic system result in higher dissolved oxygen finally other trophic levels are in equilibrium Some protists are natural scavangers & profoundly promote \"decomposition of natural organic matter & dead bodies\" therefore nitrogen balance in the ecosystem Some protist are harmful to the ecosystem and they cause disease to various animal and humans result in ecological imbalance in trophic levels of food web Economic importance of protists: Bio-medical importance of protists: Ecological importance of protists: Ques-4: Green algae: These are the algae, which were originated predominantly from the endosymbiotic cyanobacteria, and these algae possess both plastids and chloroplasts for photosynthesis to perform their nutrients synthesis. Volvox is multicellular green algae and possesses cell differentiation as an evolutionary reproductive adaptation. The cells are associated with flagella outside for motility and vacuoles & chloroplasts inside. They mediate.

1. Protists are beneficial to the ecosystem in generating oxygen as they are photosynthetic & single
celled in aquatic system result in higher dissolved oxygen finally other trophic levels are in
equilibrium
Some protists are natural scavangers & profoundly promote "decomposition of natural organic
matter & dead bodies" therefore nitrogen balance in the ecosystem
Some protist are harmful to the ecosystem and they cause disease to various animal and humans
result in ecological imbalance in trophic levels of food web
Economic importance of protists:
Bio-medical importance of protists:
Ecological importance of protists:
Ques-4:
Green algae: These are the algae, which were originated predominantly from the endosymbiotic
cyanobacteria, and these algae possess both plastids and chloroplasts for photosynthesis to
perform their nutrients synthesis.
Volvox is multicellular green algae and possesses cell differentiation as an evolutionary
reproductive adaptation. The cells are associated with flagella outside for motility and vacuoles
& chloroplasts inside. They mediate cell –to- cell communication through sensory perception
obtained from “eyespot” finally neighboring cells join through “cytoplasmic strands” that
promote cell –to-cell communication. Recent research has illustrated that cellular adhesion
molecules (Algal-CAMs) are found in multicellular Volvox. However, the bulk transport has not
observed in the Volvox, a primitive feature still yet to develop in them.
Brown algae are the algae, which possess secondary chloroplasts as their functional units to
perform their photosynthesis and these algae are commonly originated from the endosymbiotic
red algae. Examples are diatoms. Phylogenetic relationship with land plants:
Red algae do not possess property of photosynthesis & as they do not contain green pigments
Ques-3:
Outer coverings:
Sphingolipids
Pellicle
Phospholipids & glycolipids
Solution
Protists are beneficial to the ecosystem in generating oxygen as they are photosynthetic & single
celled in aquatic system result in higher dissolved oxygen finally other trophic levels are in

2. equilibrium
Some protists are natural scavangers & profoundly promote "decomposition of natural organic
matter & dead bodies" therefore nitrogen balance in the ecosystem
Some protist are harmful to the ecosystem and they cause disease to various animal and humans
result in ecological imbalance in trophic levels of food web
Economic importance of protists:
Bio-medical importance of protists:
Ecological importance of protists:
Ques-4:
Green algae: These are the algae, which were originated predominantly from the endosymbiotic
cyanobacteria, and these algae possess both plastids and chloroplasts for photosynthesis to
perform their nutrients synthesis.
Volvox is multicellular green algae and possesses cell differentiation as an evolutionary
reproductive adaptation. The cells are associated with flagella outside for motility and vacuoles
& chloroplasts inside. They mediate cell –to- cell communication through sensory perception
obtained from “eyespot” finally neighboring cells join through “cytoplasmic strands” that
promote cell –to-cell communication. Recent research has illustrated that cellular adhesion
molecules (Algal-CAMs) are found in multicellular Volvox. However, the bulk transport has not
observed in the Volvox, a primitive feature still yet to develop in them.
Brown algae are the algae, which possess secondary chloroplasts as their functional units to
perform their photosynthesis and these algae are commonly originated from the endosymbiotic
red algae. Examples are diatoms. Phylogenetic relationship with land plants:
Red algae do not possess property of photosynthesis & as they do not contain green pigments
Ques-3:
Outer coverings:
Sphingolipids
Pellicle
Phospholipids & glycolipids