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.
Normal resting heart rate has been reported to be between 60 to 100 beat per minute, although it is typically lower in aerobic athletes. Resting heart rate has been suggested to be a marker of training tolerance.stimates of maximal heart rate using the age-based prediction formula (220-age) exhibit relatively large standard deviations (â¥ 10 beats per minute) so age-based predictions should be used with caution.