Which fruit is rich in citric acid?

Climacteric fruits are:

Which of the following statements are correct with regard to the position of emergence of flower buds in different fruits? (A) In mango, fruit buds are borne terminally and unfold to produce inflorescence without leaves. (B) In apple, fruit buds are borne both terminally and laterally but unfold to produce inflorescence terminally. (C) In pears, fruit buds are borne terminally, unfolding to produce leafy shoots terminating into flower clusters. (D) In jackfruit, fruit buds are always borne adventitiously in the old trunk or shoots.
Choose the correct answer from the options given below:

Which of the following fruit crop originated in temperate region but established well in subtropical region

Given below are two statements: Statement I: Litchi is commercially propagated by air layering. Statement II: Litchi is a subtropical fruit crop.

Given below are two statements: Assertion (A): Lemon is not suitable for jam making. Reason (R): Jam is prepared by boiling fruit with a sufficient quantity of sugar (minimum 68%) to a reasonable thick consistency.