72.
In which of the following bacteria, CO2 fixation occurs utilizing coenzyme A and in the presence of reduced ferrodoxin which however generate photosynthetically?

75.
Application of an antibiotic, Agrimycin, containing 15 % streptomycin and 1.5 % oxytetracyclin is the only effective control of

77.
Before the formation of the funicle the hypodermal cells at the apex of the nucellus are differentiated due to large nuclei and dense cytoplasm, which are called

78.
Any one parameter is not good enough to demonstrate growth through the life of a flowering plant because

79.
Match List-I (Altitudinal zones of eastern Himalayas) with List-II (Floras) and select the correct answer:
List-I List-II
a. Tropical 1. Rich in conifers and bamboos (Arundinaria spp.)
b. Upper temperate 2. Composed of Shorea robusta with patches of riverain mixed deciduous forests, savannahs and swamps
c. Alpine 3. Composed of Rhododendron and Juniperus species