From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in

• Mosses

• Pteridophytes

• Gymnosperms

• Liverworts

342.

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

Lactic acid is produced by Rhizopus species 

• R. oryzae 

• R. stolonifer

• R. nodosus 

• R. sexualis

Which of the following is non symbiotic bio-fertilizer

• YAM

• Anabaena

• Azotobacter

• Rhizobium