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.
Answer:
Chemical Digestion
Explanation:
In the large intestine – the final section of the gastrointestinal tract – absorption of water and electrolytes takes place and colonic bacteria complete the process of chemical digestion.
The correct answer is A. Lemurs
Explanation:
In biology, a primate is a taxonomic order of mammals that originated around 85 million years ago as animals that lived in trees and derived into multiple species including lemurs, humans, apes, monkeys, gorillas, etc. Additionally, primates as a taxonomic order divide into two suborders prosimians and anthropoids. The first group of primates is mostly nocturnal, small and also they have a smaller brain, this includes primates such as lemurs and tarsiers. On the other hand, anthropoids have a bigger brain and size and also have more advanced cognitive abilities this includes gorillas, monkeys, apes, and even humans. Considering this, the on that is not an anthropoid but prosimians are the Lemurs.
Option 3; the other grams were realeased as a gas
