Botanical gardens remain important for their records to local fauna and as basis for continued monographic work.

Botanical gardens and zoological parks have: (a) collection of only local plants and animals (b) collection of exotic living species only (c) collection of endemic living species only (d) collection of both endemic and exotic living species

One of the most important functions of botanical gardens is that

What are taxonomical aids? Give the importance of herbaria and museums. How are botanical gardens and zoological parks useful in conserving biodiversity?

Match column-I with column-II {:(,"Column-I",,"Column-II"),(a.,"Museum",(i),"Information on one taxon"),(b.,"Herbaria",(ii),"Couplet"),(c.,"Botanical gardens",(iii),"Arranged on universally accepted classification system"),(d.,"Taxonomic key",(iv),"Educational institutes"),(,,(v),"Records of local flora for monographic work"):}

In botanical gardens and tea gardens , gardeners trim the plants regularty so that they remain bushy .Does this practic have any scientific explanation?

Answer question numbers 3(a) - 3(d) on the basis of your understanding of the following paragraph and the related studied concepts: Around the year 1800, only 30 elements were known. Dobereiner in 1817 and Newlands in 1866 tried to arrange the then known elements and framed laws which were rejected by the scientists. Even after the ejection of the proposed laws, many scientists continued to search for a pattern that correlated the properties of elements with their atomic masses. The main credit for classifying elements goes to Mendeleev for his most important contribution to the early development of a Periodic table of elements wherein he arranged the elements on the basis of their fundamental property, the atomic mass and also on the similarity of chemical properties. The formula of their hydrides and oxides were treated as basic criteria for the classification of the elements. However, Mendeleev's classification also had some limitations as it could not assign the position to isotopes. He also left some gaps in the periodic table. 3(a) state Mendeleev's Periodic Law. 3(b) Why did Mendeleev leave some gaps in the Periodic table? 3(c) if the letter 'R' was used to represent any of the elements in the group , then the hydride and oxide of carbon would respectively be represented as (i) RH_4 , RO (ii) RH_4 , RO_2 (iii) RH_2 , RO_2 (iv) RH_2 , RO 3(d) isotopes are (i) atoms of an element with similar chemical properties but different atomic masses. (ii) atoms of different elements with similar chemical properties but different atomic masses. (iii) atoms of an element with different chemical properties but same atomic masses. (iv) atoms of different elements with different chemical properties but same atomic masses.

Write in brief about two important botanical gardens of India.