Plants: haploid generation of a plant produces gametes (sperm and eggs) and is called the gametophyte; the diploid generation produces spores and is called the sporophyte/ diploid zygote.
1 You gain the most benefits and lessen the risks when you exercise in your target heart rate zone. 2  Usually this is when your exercise heart rate (pulse) is 60 to 80 percent of your maximum heart rate. 3  In some cases, your health care provider may decrease your target heart rate zone to begin with 50 percent.
Using your average heart rate during an exercise session, you can estimate the calories that you expend while working out. Your heart rate is directly related to your calorie expenditure rate. This calculation will be most accurate when your heart rate is between 90 and 150 beats per minute (bpm). The equation used to calculate calories burned also requires weight, gender and duration of the exercise session.