The fertilized eggs of reptiles and birds are covered with calcareous shells. Due to this, the zygote passes from which phase?
A. Growth phase
B. Vegetative phase
C. Development phase
D. Incubation phase
Answer:D
The fertilized eggs of reptiles and birds are covered with calcareous shells. Due to this, the zygote passes from which phase?
A. Growth phase B. Vegetative phase C. Development phase D. Incubation phase