STD 12 - 8. microbes in human welfare — BIOLOGY STD 12 Science — Question

The normal or Polygonum type of embryo sac is

Driving force of any ecosystem is

Egg undergoes cleavage and forms

Maximum number of existing transgenic animals is of:

The bacterium that commonly lives in animal and human intestine is:

Delete the odd one:

Pathophysiology is the:

Match the following and choose the correct options:

a.	Trophoblast	i.	Embedding of blastocyst in the endome trium.
b.	Cleavage	ii.	Group of cells that would differentiate as embryo.
c.	Inner cell mass	iii.	Outer layer of blastocyst attached to the endometrium.
d.	Implantation	iv.	Mitotic division of zygote.

Options:

Amniocentesis is a process to :

Precipitates of purified DNA after the addition of chilled ethanol can be seen as a collection of fine threads in suspension. This process is referred as _____________: