Have you ever heard of the "green super rice" that "has no pesticides and is resistant to insects, eats less chemical fertilizers and grows strong, and lives only by rain"? (1) The host at the table

(1) Rice is a monocotyledonous plant, and its seed structure includes seed coat, embryo and endosperm, in which endosperm is used to store nutrients. The main part of the seed is the embryo, which will develop into a new individual in the future, so the embryo is required to be complete and alive.

(2) Plants need a variety of inorganic salts, such as nitrogen, phosphorus and potassium. Chemical fertilizer is short for chemical fertilizer. Fertilizers made by chemical and/or physical methods containing one or more nutrient elements required for crop growth can provide inorganic salts for rice growth.

(3) The connotation of biodiversity includes three levels: the diversity of biological species, the diversity of genes and the diversity of ecosystems. Using rice gene bank to cultivate multi-variety rice is actually the application of gene diversity in agricultural production.

So the answer is:

( 1)D

(2) Answer

(3)C