Coenorhabditis elegans is

The genome of Coenorhabditis elegans consists of :

Two microbes found to be very useful in genetic engineering are (A) crown gall bacterium and caenorhabditis elegans. (B) Escherichia coli and Agrobacterium tumefaciens (C) Vibrio cholerae and a tailed bacteriophage (D) Diplococcus sp. and Pseudomonas sp.

Pollen tatrad of Aristolochia elegans is

Pollen tetrad of Aristolochia elegans is