Biology Questions and Answers
Protists
- Which are the groups of
living beings that form the
protist kingdom?
The protist kingdom includes protozoansand algae. (Two groups of fungi with
similarmyxomycet characteristices and oomycetes, hs to protozoans,ave
been classified as protists.)
Unicellular punicellular eukaryotes. Trotozoans anhe pluricellulard algae are (^)
algae are eukaryotes otoo. It is believed that protistsf simple arestructure
phylogenetic ancestorsof the other eukariotic kingdoms ( of living beingsfungi, (^)
animals and plants).
- What is the fundamental
difference between
protozoans and algae?
The basic difference betweenprotozoans and algae is the fact that (^)
protozoaare photosynthns are heterotropetic autotrophs.hs while algae
- What are the characteristics
of protozoans that make them
resemble animals?
Protozoans are some similar characteristicunicellular beings withs to animal (^)
cells.
In comparison to pluricellular organisms
protozoaanimal kingdom thans are more proximaln to plants: they ar to the (^) e
heterotrophs, they have a rudimentary
locomotiomovements, cilia, flagn system (amoeboidella), they do not (^)
have cell wall, some species present
structures that rprimitive digestive system,esemble structures o with f a
cytostome (mouth) and cytopyge
(anus), spexcretion.ecialized in digestion and
The evolutionary hycells have come from differentiation opothesis that animalf
protozoans is strong.
- What is the basic
morphology of a protozoan
cell?
Protozoans are eukaryotic cells so they
have organelles anto this kind of cell: endoplasmicd structures comm reticula,on (^)
Golgi apparatus, digestive vesicles,
ribosomes, mitochogenetic material, karyotheca, etc. Allndria, nucleus with
these elements are found dispersed
throughout the cytoplasm.do not have cell walls. Protozoans
Protozoans frgroup (like trichomonas) hom the mastigopave flagellahora (^)
and others, otgroup (like paramecium) havhers from the ciliatede cilia.
- Do protozoans have a
cellular nucleus?
All protozoanucleus. Some species, like tns, as eukaryotes, havehe
http://www.biology-questions-and-answers.com