It is very important to maintaining low O₂ concentrations in nodules, and it maintained by various ways

(a) With the help of parenchyma

(b) With the help of Lb

(c) Bacterial respiration as O₂ sink

(d) With the help of sclerenchyma

Which of the following is true regarding to maintain low O₂ concentrations

#Question id: 28467

#Unit 5. Developmental Biology

Mammals exhibits which type of cleavage?

#Question id: 6592

#General Aptitude

#Question id: 28620

#Unit 2. Cellular Organization

APC/C works with core and substrate-targeting factors, the core is organized into several different modules, except?

#Question id: 19226

#Unit 12. Applied Biology

#Question id: 8296

#Unit 9. Diversity of Life Forms

Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms (G. intestinalis) that infect humans are similar morphologically to those that infect other mammals, thus they have been considered a single species. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of Giardia. The researchers concluded that the subgroups of Giardia are sufficiently different from one another genetically that they could be considered different species.

According to the phylogenetic tree in the figure above, G. intestinalis constitutes a ________ group.