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.
Heart Rate. Heart rate is measured as beats-per-minute, and target heart rates for exercise are expressed as a percentage of your maximum heart rate -- often calculated as 220 minus your age, though more accurate formulas take your resting heart rate into account.our target exercise heart rate for an effective cardio workout should be between 50 and 85 percent of your maximum. You can wear a heart monitor or check your rate manually at your wrist, neck, inside your elbow or at the top of your foot. Take your pulse for 10 seconds and multiply by six.