Nucleotides are

Improvement of genetic characters and present-day generation on the basis of best nutrition and training is called:

$RNA$ differs from $DNA$ in having

Choose the correct option.
$x$ - More than $70$ percent of all the species recorded are animals.
$y$ - The number of algae species in the world is more than the combined total of the species of fishes,amphibians,reptiles,and mammals.
$z$ - India is one of the $15$ mega diversity countries of the world.

Which one of the following is an example of a glycoprotein?

The total solar energy converted to biomass on Earth amounts to approximately: (in $\%$)