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.
The factors that elevate resting heart rate also elevate exercise heart rate. If youâre not fully recovered from a previous workout, you might notice, for example, at your usual steady-state pace, an exercise heart rate that is 5 to 10 bpm higher than normal.