Which advance in biology resulted from developments in cell technology?
a- somatic cells
b-immortal cell lines
c- aseptic technique
d- tissue typing

Ans.

The immortalised cell lines are defined as the cell population, form of a multicellular organism that would usually do not proliferate indefinitely, but have escaped normal cell senescence due to mutations. Thus, these cells keep undergoing indefinite divisions.

The immortalised cell lines can be also developed in vitro by using advance cell technologies. These technologies include hybridoma technology, artificial expression of proteins that make cells immortal, and introduction of mutations in normal cells.  

Thus, the correct answer is option B). 'immortal cell lines.'

True

Explanation:

Each silk connects to an individual ovule (potential kernel). A given silk must be pollinated in order for the ovule to be fertilized and develop into a kernel. Up to 1000 ovules typically form per ear, even though we typically harvest only 400 to 600 actual kernels per ear.

Technically, pollination is almost always successful (i.e., the pollen reaches the silks), but unsuccessful fertilization (i.e., pollen tube failure, silk failure, pollen death) will fail to result in a kernel.

https://www.agry.purdue.edu/ext/corn/news/timeless/Silks.html