This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
Right, let's go. 1. Insects respire through the A. trachea B. lungs C. body surfaces D. gills E. auricle Insects respire using a system of tubes called trachea that open to the outside via spiracles. The correct option is A. 2. All of the following are the features of the mammalian respiratory system except A. smaller except surface area B. thin membranes C. moisturized surfaces D. highly vascularized E. all of the above. Mammalian respiratory systems are characterized by a large surface area, thin membranes, moisturized surfaces, and high vascularization to facilitate efficient gas exchange. Option A states "smaller except surface area," which is incorrect because a large surface area is essential. The correct option is A. 3. Fishes exchange air in the A. lungs B. body surface C. gills D. trachea E. all of the above. Fishes use gills for gas exchange, extracting oxygen from water. The correct option is C. 4. Stomata opens when the guard cells are A. flaccid B. weak C. turgid D. forced E. none of the above. Stomata open when guard cells absorb water and become turgid, causing them to bow outwards and create an opening. The correct option is C. 5. Following evolutionary trend, which of the following is the most primitive? A. fish B. rat C. monkey D. spirogyra E. lizard Spirogyra is a type of green algae, representing a very early and simple form of life compared to the vertebrates listed (fish, rat, monkey, lizard). The correct option is D. 6. In which of the following organisms can diffusion take place by allowing air pass through exchange site twice? A. man B. bird C. toad D. lizard E. salamander Birds have a unique respiratory system with air sacs that allow for unidirectional airflow through the lungs (parabronchi). This means air passes over the gas exchange surfaces during both inhalation and exhalation, effectively passing through the exchange site twice. The correct option is B. Send me the next one 📸