Measurement of phytoplankton production, take sample of phytoplankton suspended in three bottles in lake. One bottle as control assumed as initial, second bottle (D) was kept in dark while third bottle (L) was kept in light. After some time productivity measure fallow

A- Difference in dissolved oxygen between light bottle and dark bottle yield NET primary productivity

B- Difference in dissolved oxygen between light bottle and initial bottle yield NET primary productivity

C- Difference in dissolved oxygen between light bottle and initial bottle yield Grass primary productivity

D- Difference in dissolved oxygen between light bottle and dark bottle yield total oxygen produced by photosynthesis

Which above combination of statement are correct?

#Question id: 8682

#SCPH28 | Zoology

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

Which of the following changes would a modern systematist be most likely to make after learning of the results of the rRNA analyses?

#Question id: 4198

#SCPH28 | Zoology

An elongation factor EF-Ts serves mainly to

#Question id: 365

#SCPH06 I Botany

Water is a polar molecule: the oxygen atom with its unshared electrons carries a partial negative charge (δ−) of ___________, and the hydrogen atoms each carry a partial positive charge (δ+) of __________, where e is the charge of the electron.

#Question id: 16480

#SCPH28 | Zoology

#Question id: 14829

#SCPH06 I Botany