Answer:
The respiratory system is comprised of specialized organs and structures for gas exchange in both animals and plants. The structure and function of this system differ significantly based on the organism's size, habitat, and evolutionary background. In terrestrial animals, the respiratory surfaces are typically the linings of the lungs. In mammals and reptiles, gas exchange occurs within millions of tiny air sacs known as alveoli, while birds have atria for this process. These tiny air sacs boast an extensive blood supply, ensuring air comes into close proximity with the bloodstream. They connect to the outer environment through airways or hollow tubes, with the trachea being the largest that divides in the chest into two primary bronchi. These then branch further into successively narrower secondary and tertiary bronchi, eventually leading to numerous smaller tubes called bronchioles. In birds, these are referred to as parabronchi. The air needs to be drawn into the alveoli or atria from the outside through the act of breathing, which involves respiratory muscles.
Explanation:
Answer:
The answers are - a, and b.
Explanation:
Plasticity refers to the brain's capacity to adapt and undergo changes throughout an individual's life. It showcases an impressive capability for recovery following surgical intervention or damage to the brain.
Neurogenesis signifies the ability to regenerate nerve cells, which can occur in adults but typically requires around six weeks to take place.
Consequently, the answers are - a, and b.
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Answer: C. Squamous epithelial tissue.
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B. The organism does not engage in photosynthesis. Plants are autotrophic and synthesize their own food through photosynthesis, converting light energy to chemical energy. In contrast, fungi are heterotrophic and do not have this ability.
