Question

Read the following sentences and identify the correctly matched sentences
() In exarch condition the protoxylem lies outside of metaxylem
(1) In endarch condition the protoxylem lies towards the centre
(l) in centrarch condition the metaxylem lies in the middle of protoxylem.
(iv) in mesarch condition protoxylem lies in the middle of metaxylem.
(a) (1), (i) and (iv) only
() 1.01) and (1) only
(c) (i), (iii) and (iv) only
(d) All of these​

Answer 1

Answer:

Xylem development can be described by four terms: centrarch, exarch, endarch and mesarch. In mesarch development there are several vascular strands and in each of these protoxylem is located in the center surrounded by the metaxylem. This type of primary xylem development is found in many species of ferns.

So, the correct answer is 'Mesarch condition.'