Which of the following is non symbiotic bio-fertilizer
YAM
Anabaena
Azotobacter
Rhizobium
C.
Azotobacter
Anabaena, Nostoc, Aulosira etc., are agriculturally very important as non-symbiotic bacteria also called free living nitrogen fixing bacteria. VAM, Azotobacter and Rhizobium are symbiotic organisms.
Consider following features
(a) Organ system level of organisation
(b) Bilateral symmetry
(c) True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics
Annelida, Arthropoda and Mollusca
Arthropoda, Mollusca and Chordata
Annelida, Mollusca and Chordata
Annelida, Arthropoda and Chordata
D.
Annelida, Arthropoda and Chordata
True segmentation is present in Annelida, Arthropoda and Chordata. They also have organ system level of organisation, bilateral symmetry and are true coelomates.
In some animal groups, the body is found divided into compartments with at least some organs/ organ repeated. This characteristic feature is named
Segmentation
Metamerism
Metagenesis
Metamorphosis
B.
Metamerism
Lactic acid is produced by Rhizopus species
R. oryzae
R. stolonifer
R. nodosus
R. sexualis
C.
R. nodosus
Rhizopus species causing fermentation are :
(i) R. oryzae - Alcoholic fermentation
(ii) R. nodosus - Lactic acid fermentation
(iii) R. stolonifer (R. nigricans) - Fumaric acid fermentation.