Life Cycle Of A Chicken Science Quiz Online, 4th and 5th grades. A chicken lays eggs which it incubates for about three weeks. After this period the eggs hatch into chicks which later grow up into male adults (called rooster) or females (called hen). This quiz contains a life cycle diagram in which students have to label the missing parts of the cycle. By carrying out this activity, students will gain more skills about the life of a chicken. This activity will also serve as a science test for review both at home and in school by teachers and parents of students in the in grade 4 and grade 5. Click start and begin practicing.