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.
For most people, a normal resting heart rate is between 60 and 90 beats a minute, Coyle says. Athletic training can lower that rate by 10 to 20 beats per minute.. But if you have a lower resting heart rate than someone else, don't assume that you're in better shape than them, or vice versa.