Statement I: Mandarins are commonly known as loose skin orange.
This statement is true. Mandarins (Citrus reticulata and its hybrids) are a group of citrus fruits characterized by their rind (peel) that is typically easy to remove from the flesh segments, hence the common term "loose-skinned oranges" or "easy peelers." This distinguishes them from sweet oranges (Citrus sinensis) which generally have a more adherent rind.
Statement II: Hodgson classified mandarins into three groups- Satsuma, King and Willow leaf.
This statement is true. R.W. Hodgson, a prominent citrus taxonomist, in his classification of citrus (e.g., in "Horticultural Varieties of Citrus," 1967, part of The Citrus Industry vol. 1), did group mandarins into several categories. While different taxonomists have proposed various systems, Hodgson's classification is influential. He recognized several groups of mandarins, and among the principal ones were:
Satsuma mandarins (C. unshiu)
King mandarins (C. nobilis)
Willowleaf mandarins (C. deliciosa) - though sometimes also grouped with Mediterranean mandarins.
He also discussed other groups like Mediterranean mandarins and common mandarins. The three mentioned (Satsuma, King, Willowleaf) represent significant and distinct groups within the broader mandarin category recognized by Hodgson.
Since both statements are true, option (1) is correct.
Both Statement (I) and Statement (II) are true.