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. Two people can be equally fit and have significantly different resting heart rates.