Which of the following is less general in characters as compared to genus

As we go lower from kingdom to species, the number of common characters at each taxon:

1. Goes on decreasing

2. Goes on increasing

3. Remains same

4. There is no pattern to this

Match each item in Column I with one item in Column II regarding taxonomic categories of humans and chose your answer from the codes given below:

Codes:

Match column I with column II for housefly classification and select the correct option using the codes given below:

Codes:

         A     B     C     D

(1)     3     1      4     2

(2)     3     2      4     1

(3)     4     3      2     1

(4)     4     2      1     3

Two plants can be conclusively said to belong to the same species if they:

(1) can reproduce freely with each other and form viable seeds

(2) have more than 90 percent similar genes

(3) look similar and possess identical secondary metabolites

(4) have same number of chromosomes