Answer:
The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart.
Explanation:
In Anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.
Generally, the cardiac cycle occurs in two (2) stages;
I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.
II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.
All amphibians and reptiles except for crocodiles (having four-chambered heart) have three-chambered hearts, which typically comprises of a partially divided ventricle and two atria.
Hence, the correct statement about the three-chambered hearts of amphibians and nonbird reptiles is that, the three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart due to the partially divided ventricle.
As per the given scenario, the chances of an offspring as a male or female is 50% each.
<h3>What are chromosomes?</h3>
The thread like structure resides inside the nucleus is referred to as chromosomes.
As there are 23 pair of chromosomes present in the organisms, they transfer their equal numbers in the future generation with some variations.
As per the given image, it is clearly shown that there is 50% possibility of being male or female offspring.
Thus, the chances of an offspring of this pairing being born male or female are 50%.
For more details regarding chromosomes, visit:
brainly.com/question/1596925
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Diffusion is the movement of molecules from an area where they’re at a higher concentration to areas that have a lower concentration - goo gle
<em>the function of epidermis is to protect the leaf
make it air tight
prevent water loss as it is waxy
also it is transparent and allows all light to enter...
chloroplast is required for carrying out process of photosynthesis...
as epidermis is not specialized to carry out photosynthesis... so it does not have any chloroplast...</em>
This questions seems like its missing other parts
