23. Endosperm is
(A) sperm after it has entered the archegonium
(B)nutritive tissue produced within antheridia
(C)tissue stored in seeds that provides nutrition for embryos
(D)sperm cells enclosed within pollen grains
(E) sperm produced at the end of the flowering season

答案：登入後查看
統計： A(3), B(1), C(34), D(6), E(1) #2345011