First Year Biology Chapter 7 Online Short Questions for 1st Year Biology Chapter 7 The Kingdom Protista Preparation

What are actinopods?

What kind of chlorophylls are found in photosynthetic plants and algae?

• Ans 1: They are photosynthetic with chlorophyll a,chlorophyll b and carotenoids present in the chloroplast.

Why pelomyxa palustris may be the most primitive off all eukaryotic like forms?

• Ans 1: The giant amoeba Pelomyxa palustris may be the most primitive eukaryote.This species has multiple membrane bounded nuclei but none of the other organelles found in all other eukaryotes,The giant amoeba obtains energy from methanogenic bacteria,which reside inside them.

What are pigments found in algae?

• Ans 1: Chlorophyll Carotenoids,Xanthophylls,Phycoerythrin

What is trypanosoma? What disease does it cause?

• Ans 1: Parasitic flagellates cause diseases.For example Trypanosoma is a human parasite causing African sleeping sickness.It is transmitted by the bite of Tsete fly.

What is zooflagellates? Give one example.

• Ans 1: The protists are mostly unicellular organisms with spherical or elongated bodies with single central nucleus.They possess from one to many whip-like flagella.Example are trichonymphas

What are choanoflagellates?

• Ans 1: Choanoflagellates are sessile marine or freshwater flagellates.They are attached by a stalk and surrounded by a delicate collar.They are of special interest because of their striking resemblance to collar cells in sponges.

How algae differs from plants?

• Ans 1: Plants: Reproductive organs are multicellular.Embryo formation occur.
  Plants is different in to root,stem and leaves with xylem and phloem
• Ans 2: Algae: Reproductive organs of algae are unicellular.Embryo formation is absent in algae.Plant body is thallus like.

Differentiate between foraminiferans and actinopods.

• Ans 1: Foraminiferans : These marine protozoans produce shell (also called as tests).
• Ans 2: Actinopods : Test of foraminiferansare made of calcium whereas those of a actinopods are made of silica.

What are trichonymphas? Give its important.

• Ans 1: Trichonymphas are complex,specialized flagellated with many flagella which live as symbionts in the gut of termites and help in the digestion of dry wood.

What are actinopods?

Name two plants like protists group.

• Ans 1: Two plants like protists are green algae and red algae.

Name four major groups of kingdom protista.

• Ans 1:
  Protozoans: Animals like protista.

  Unicellular Algae: Plants like protista.

  Multicellular Algae: Plants like protista.

  Slim molds and water molds: Fungi like protista.
  
  

Name four Phyla of Algae.

• Ans 1: Chlorophyta,Rhodophyta,Phaeophyta and Euglenophyta.

Name the nuclei of ciliates.

• Ans 1: 1.Micronuclei
  2.Macronuclei

Write two characteristics of Apicomplexans.

• Ans 1: They are large group of parasitic protozoa.Some cause serious disease such as malaria in human.
  They lack specific structure for locomotions but move by flexing.

Write down two characteristics of foraminiferans?

• Ans 1: They are marine protozoans.
  They have external shell or test.

What are choanoflagellates?

• Ans 1: Choanoflagellates are sessile marine or freshwater flagellates.They are attached by a stalk and surrounded by a delicate collar.They are of special interest because of their striking resemblance to collar cells in sponges.

How foraminiferans are source of limestone?

• Ans 1: Dead foraminiferans sink to the bottom of the oceans where their shells form a grey mud that is gradually transformed into chalk.Foraminiferans of the past have created vast limestone deposits.

What is trypanosoma? What disease does it cause?

• Ans 1: Parasitic flagellates cause diseases.For example Trypanosoma is a human parasite causing African sleeping sickness.It is transmitted by the bite of Tsete fly.

What is sleeping sickness?

• Ans 1: Trypanosoma is the cause of sleeping sickness which is transmitted by Tsetse fly.

How do ciliates differs from other protozoans?

• Ans 1: Ciliates differs from other protozoans because they have other covering called pellicle and two nuclei.One is called macronucleus and other is called macronucleus.

What are Dinoflagellates? Give example.

• Ans 1: It is unusual protist phylum.Most of the Dinoflagellates are unicellular.Their cells are often covered with shells of interlocking cellulose plates impregnated with silicates.For example Ceratium and Gonyaulax.

Write down two characteristics of foraminiferans?

• Ans 1: They are marine protozoans.
  They have external shell or test.

What is zooflagellates? Give one example.

• Ans 1: The protists are mostly unicellular organisms with spherical or elongated bodies with single central nucleus.They possess from one to many whip-like flagella.Example are trichonymphas

Name six group of animals like protists.

• Ans 1: Amoeba,zooflgellates,Ciliates,foraminiferans,actinopods,apicomplexanss.

How is chalk formed?

• Ans 1: Dead foraminiferans sink to the bottom of the oceans where their shells form a grey mud that is gradually transformed into chalk.

What are Apicomplexans? How do they move?

• Ans 1: Apicomplexans are a large group of parasitic protozoans which cause serious like malaria in human .They lack specific structure of locomotion but move by flexing.

Name any three phylum of protoctista.

• Ans 1: Three phyla of protoctista are
  1. Protozoa
  2. Algae
  3. Fungi like protists

Name four major groups of kingdom protista.

• Ans 1:
  Protozoans: Animals like protista.

  Unicellular Algae: Plants like protista.

  Multicellular Algae: Plants like protista.

  Slim molds and water molds: Fungi like protista.
  
  

What kind of chlorophylls are found in photosynthetic plants and algae?

• Ans 1: They are photosynthetic with chlorophyll a,chlorophyll b and carotenoids present in the chloroplast.

What are ciliates? Give two examples.

• Ans 1: Ciliates have cilia on their outer body surface and pellicle as outer body covering e.g paramecium and Vorticella.

From where do giant amoebas get energy?

• Ans 1: Giant amoebas obtains energy from methanogenic bacteria,which resides inside them.

Differentiate between Pseudopodiaand Flagella.

• Ans 1: Pseudopodia : Amoeba move by forming specialized cytoplasmic projections called pseudopodia.
• Ans 2: Flagella: These are extremely thin,hair like appendages.Their function is motility in bacteria and zooflagellates.

Highlight evolutionary significance of euglenoids.

• Ans 1: Euglenoids dianoflagellates are one of the most important group of procedures in marine ecosystem.They also cause red tides.

How algae differs from plants?

• Ans 1: Plants: Reproductive organs are multicellular.Embryo formation occur.
  Plants is different in to root,stem and leaves with xylem and phloem
• Ans 2: Algae: Reproductive organs of algae are unicellular.Embryo formation is absent in algae.Plant body is thallus like.

What is the function of pellicle in ciliates?

• Ans 1: Pellicle that gives ciliates a definite but changeable shape.

Name the nuclei of ciliates.

• Ans 1: 1.Micronuclei
  2.Macronuclei

How foraminiferans are source of limestone?

• Ans 1: Dead foraminiferans sink to the bottom of the oceans where their shells form a grey mud that is gradually transformed into chalk.Foraminiferans of the past have created vast limestone deposits.

Give two characteristics of ciliates.

• Ans 1: They are unicellular organisms with a flexible outer covering called a pellicle that gives them a definite shape but changeable shape.
  Paramecium is one of the most complex ciliate.In parameters the surface of the cell is covered with several thousands fine,short hairs like structure called cilia.