Tag: protozoa
Questions Related to protozoa
To which kingdom Amoeba and Euglena belong in Whittaker's classification?
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Monera
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Plantae
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Protista
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Animalia
The five kingdom classification was proposed by R.H. Whittaker in 1969. The five kingdoms were formed on the basis of characteristics such as cell structure, mode of nutrition, the source of nutrition and body organization. It includes Kingdom Monera, Protista, Fungi, Plantae, and Animalia. According to Whittaker's 5 kingdom classification, unicellular eukaryotes belong to kingdom Protista. Amoeba and euglena are unicellular eukaryotic organisms so they belong to kingdom Protista.
Which do not belong to Protista?
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Euglenoids
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Zooflagellates
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Methanogens
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Ciliates
Read the following statements.
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Contractile vacuoles eliminates excess water from the body
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Glomerular kidney is present in Fresh water fishes
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A glomerular kidney possess less no. of nephrons
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Chloride cells are present on the stomach wall of frog
Contractile vacuoles are membrane-bound cellular organelle found in many microorganisms. These periodically expand and get filled with water and contract, expelling the contents to the exterior of the cell.
Protista includes ________________.
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Eutaryotic organisms
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Autotrophic in nutrition
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Heterotrophic in nutrition
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All organisms which show locomotion
- Kingdom Protista includes Eukaryotes can be unicellular or multicellular. they produce sexually or asexually eg. Plasmodium( cause malaria) , Ameoba.
- Autotrophic organism creat their own food by fixing carbon . kingdom Plantae includes all unicellular or multicellular autotrophic organism.
- Heterotrophic organism obtain their food from organic sources , hence kingdom Fungi and kindom Animalia includes heterotrophic organism.
- so the correct answer is "eukaryotic organism".
Protista includes
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Eukaryotic organisms
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Autotrophic in nutrition
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Heterotrophic in nutrition
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All organisms which show locomotion
A protist is any eukaryotic organism that is not an animal, plant or fungus. The protists do not form a natural group, or clade since they exclude certain eukaryotes; but, like algae or invertebrates, they are often grouped together for convenience.
Find the incorrect match
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Whirling whips ---- Peridinin
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Soap box protistans -------- Leucosin
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Photosynthetic spindle protistans -------- Chrysolaminarin
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Protistan fungi -------- Fat droplets
Diatoms are protistand in which the cell walls form two thin overlapping shells, which fit together as in a soap box. The walls are embedded with silica.
The protists have
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only free nucleic acid aggregates
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membrane bound nucleoprotein lying embedded in the cytoplasm
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gene containing nucleoproteins condensed together in loose mass
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nucleoprotein in direct contact with the rest of the cell substance
Protists have a membrane-enclosed nucleus and membrane-enclosed organelles. This nucleus is embedded in the cytoplasm. They may be single or many in number and the nucleus has a membrane covering called the nuclear envelope with pores over it.
Kappa-particles show
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Cytoplasmic inheritance
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Nuclear inheritance
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Nucleo-cytoplasmic inheritance
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Mutation
Cytoplasmic inheritance, also known as extranuclear inheritance is actually the transmission of genes that occurs outside the nucleus. Kappa particles show cytoplasmic inheritance. Here phenotype not only depends on the cytoplasm but also on the genetic material of the nucleus.
The correct answer is A.
Two species of Amoeba X and Y were kept in fresh water and got adapted. Species X developed contractile vacuole. When both were transferred to sea water and got adapted, both X and Y lost their contractile vacuole. From these observations, we conclude that
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Both X and Y are marine species
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Species Y is marine and X is fresh water
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Species X is marine and Y is fresh water
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Both X and Y are fresh water
Which of the following is a major evolutionary advance exhibited by protozoan cell in contrast with a bacterium?
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Formation of permeable cell membrane
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Presence of nucleus
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Presence of extensive system of cytoplasmic organelles
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Both A and B
Monerans are prokaryotic organisms. They lack a well-developed nucleus and cell organelles. But, on the contrary, protozoa have a well-developed nucleus and are eukaryotic organisms. Bacteria have a cell wall made of cellulose and chitin. Bacteria lack a cell membrane.