题目

The Chapramari Forest lies in the eastern area of India．【1】But a large group of elephants found still-green grasses along the railway line that crosses through the forest． As the elephants got near and on the tracks at dusk， a passenger train traveling at 50mph knocked into the herd． Seven elephants were killed， and 10injured．【2】The deaths occur at hotspots in a few Indian states where trains intersect （交叉） with elephant habitats． It's puzzling why this highly intelligent animal would wait on the tracks【3】．After a collision this past April in Odisha state th13．图表示玉米植物体的结构层次，请你据图回答：（1）A细胞经过a过程形成Bl～B4几种不同形态的细胞群，则a过程为分化；（2）若C表示我们食用的玉米粒，在结构层次上属于_器官．