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Class 11 - FAUNAL DIVERSITY

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These Class 11 Biology (NEB) notes cover the chapter "Faunal Diversity – Protista" in a clear, organized, and exam-oriented format. The notes include the general characteristics of Protista, body organization, body covering, habitat, locomotion, nutrition, digestion, respiration, osmoregulation, reproduction, life cycle, classification, and the history of classification. They also provide concise explanations of the major groups of protozoa, including Rhizopoda (Sarcodina), Flagellata (Mastigophora), Ciliata (Ciliophora), and Sporozoa (Apicomplexa). These notes are ideal for quick revision, concept building, and exam preparation.

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CHAPTER 8: FAUNAL DIVERSITY
8.1 Protista


PROTISTA → Unicellular & Eukaryotic

• One single cell: Entire organism consists of a single cell structure.

• Has distinct nucleus: Contains well-defined membrane-bound genetic material.




Group 1: Photosynthetic Protist
• Etymology: photo (light) + synthetic (formn / formation)

• Example: Algae green - chlorophyll


CO2 + H2O Sunlight / Chlorophyll → C6H12O6 + O2


Process: Photosynthesis → Autotroph



Group 2: Slime Moulds
• Example: Fungi-like protists


Group 3: Protozoan Protist
Defined as unicellular animals belonging to the Phylum Protozoa, characterized as unicellular eukaryotic
organisms.

HABIT / HABITAT

• Free living: Found independently in environments (some protozoa).

• Parasitic: Live inside the body of a host organism and cause definitive harm to the host.

• Saprophyte: Live and feed on dead & decaying organic matter.

• Habitat: The physical place where living organisms live.
◦ Aquatic: Live in water environments (both fresh water and marine water).

◦ Moist / damp places.

◦ Stagnant water bodies.




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Dr. prerana binadi
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Subjects

  • biology
  • faunal diversity
  • protista
  • habithabitat
  • body organization
  • body cover
  • locomotion
  • digestion
  • respiration
  • nutrition
  • encystment
  • classification of protozoa

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