Fill in the blanks and choose the correct option given below.

(i) The arrangement of axonemal microtubules in flagella is referred to as array.

(ii) In flagella, the central tubules are connected by bridges and is enclosed by , which is connected to one of each peripheral doublets by .

(iii) The cilium and flagellum emerge from centriole-like structure called the .

(iv) Centriole is made up of nine evenly spaced peripheral fibrils of protein.

(v) The central part of the proximal region of the centriole is called , which is connected with tubules of peripheral triplets by .

(vi) The space between two parallel membranes of nuclear envelope is called .

(vii) The nuclear matrix is called as , which contain and chromatin.

(viii) Nucleolus is a site for RNA synthesis.

(ix) The interphase nucleus has a loose and indistinct network of nucleoprotein fibres called , which contains DNA and some basic protein called .

(x) Based on position of , chromosome are submetacentric, and .

(xi) The primary constriction in a structure of chromosome is and the secondary constriction give small fragment called .

(xii) The in the plastid is the site of light reactions and the of dark reaction.