Plants that have many periods of reprodution are called

Plants that have many periods of reprodution are called perrenials.

~batmans wife dun dun dun

The answer to the question above is perrenials. Perrenial plants live for more than a year. Annual plants live only for a year they germinate,  grow and bear flowers or seeds but eventually die. while both c and d, (gametophytes and sporophytes) are both phases of plant lifecycle, not a type of plant.

hi~~

i would say that hybridization occurs frequently in nature, because there are many types of hybrids that have occurred naturally, such as the mule (male donkey + female horse)

common management practices in dairy and poultry farming are: (i) proper shelter facilities and their regular cleaning. (ii) some basic hygienic conditions such as clean water, nutritious food, etc. (iii) animals are kept in spacious, airy, and ventilated place.