Answer:
False
Explanation:
Myocardium's oxygen and nutrients are provided by coronary arteries. Coronary arteries are outside the heart and they wrap the whole heart to provide oxygen and nutrients.
Heart needs the continuous oxygen and nutrient supply for proper functioning like any other tissue of body. Any problem in coronary artery will lead to heart problem such as myocardial infarction.
The blood present inside the heart chambers does not provide any oxygen or nutrients to heart.
Answer:When inside the egg, both the egg and the sperm prepare for a genetic fusion. After this, the 23 chromosomes from the egg and the 23 chromosomes from the sperm fuse to generate the 1st cell that gives rise to new life, called the zygot
They are called circadian rhythm. Circadian rhythms are physical, mental and behavioral changes that follow a repeated daily cycle. They are usually biological processes that display an oscillation of about 24 hours and occurs in animals, plants and even cyanobacteria. The process responds to changes in light and darkness in the surroundings of an organism.
Higher position of these structures makes it easier for pollinators (or wind) to access