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Gamete formation and fusion are absent in bacteria. How do then bacteria undergo sexual reproduction?
It occurs by conjugation. It involves transfer of genetic material from one bacterium to another through cell to cell contact.
It occurs by conjugation. It involves transfer of genetic
See lessmaterial from one bacterium to another through cell to
cell contact.
Fusion of two gametes which are dissimilar in size is termed as
Anisogamy, it occurs in Ceratium, a dinoflagellate.
Anisogamy, it occurs in Ceratium, a dinoflagellate.
See lessWhat kind of nutrition occurs in a parasite?
Parasites have phagotrophic and absorptive type of nutrition.
Parasites have phagotrophic and absorptive type of
See lessnutrition.
Naked cytoplasm, multinucleated and saprophytic are the characteristics of
Slime moulds are saprophytic protists that possess all these characteristics.
Slime moulds are saprophytic protists that possess all
See lessthese characteristics.
Flagellar locomotion can be observed in which protistans?
Euglena, dinoflagellates and zooflagellates.
Euglena, dinoflagellates and zooflagellates.
See lessWhat is the nature of cell wall in diatoms?
Cell wall in diatoms is made up of cellulose and pectin compounds. It is two-valved layer called frustule.
Cell wall in diatoms is made up of cellulose and pectin
See lesscompounds. It is two-valved layer called frustule.
What is the principle underlying the use of cyanobacteria in agricultural fields for crop improvement?
Some cyanobacteria live in mutually beneficial relationship with plants, obtaining food and shelter and fixing nitrogen for the plant. They also reduce soil alkalinity and improve soil texture.
Some cyanobacteria live in mutually beneficial
See lessrelationship with plants, obtaining food and shelter and
fixing nitrogen for the plant. They also reduce soil
alkalinity and improve soil texture.
How do halophiles prevent cellular dehydration?
Halophiles contain a chemical called halorhodopsin that pumps chlorides into the cells and prevents cellular dehydration.
Halophiles contain a chemical called halorhodopsin that
See lesspumps chlorides into the cells and prevents cellular
dehydration.
Name the organisms living in salty areas.
Halophiles live in habitats having high salinity and high light intensity. Examples are Halobacterium and Halococcus.
Halophiles live in habitats having high salinity and high
See lesslight intensity. Examples are Halobacterium and
Halococcus.
Give the scientific term used for organisms that produce gobar gas.
Methanogens
Methanogens
See less