STD 12 - 10. biotechnology and its application — BIOLOGY STD 12 Science — Question

- is the taxon, which is likely to move into endangered category in near future, if conditions prevail as it is.

In which stage does crossing over take place?

Enzyme required for fertilization of sperm and ovum is located in the ......... of sperms.

Which of the following breakup water into hydrogen and oxygen on early earth?

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and:

Biolistics (gene gun) is suitable for

Which one of the following plants shows very close relationships with a species of moth, where none of the two can complete its life cycle without the other?

Which one of the following ecosystem has the highest primary productivity?

Xerocoles are:

The primitive environment was reducing because in it