11.
Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

12.
One of the following is not a function of bones.

13.
Plants absorb most part of water needed by them through their

14.
Photo-oxidation is

15.
Process of cell division can take place by

17.
Plant development is influenced by

18.
Prokaryotic cells lack

19.
Photosynthesis takes place faster in

20.
Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

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