ICSE Class 9 Answered
Briefly describe about Protista kingdom and explain?
Give brief explanation about the Monera kingdom?
Asked by kartikvns3 | 05 Apr, 2020, 08:28: PM
Expert Answer
Characteristics of Kingdom Monera:
- Organisms are unicellular, made of a single cell.
- They have a prokaryotic cell structure.
- The cell lacks a distinct nucleus. Nuclear material is organised in the form of a circular, double-stranded and helical DNA, devoid of a nuclear membrane.
- The cytoplasm lacks well-organised cell organelles, except for ribosomes.
- The cell wall is typicallypresent, except in Mycoplasmas.
- The mode of nutrition is either autotrophic or heterotrophic.
- Examples: Bacteria, Cyanobacteria, Mycoplasma
Characteristics of Kingdom Protista:
- Organisms contain a well-defined nucleus enclosed in a nuclear membrane and the presence of a nucleolus.
- The protoplasm is surrounded by a plasma membrane.
- The cytoplasm contains various cell organelles.
- Nuclear material is organised in the formof a linear, double-stranded and helical DNA along with proteins.
- Examples: Chlamydomonas,Euglena,Amoeba,Paramoecium,Pandorina
Answered by Sheetal Kolte | 06 Apr, 2020, 11:43: AM
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