Science Practice Quiz 181

Q1.How do earthworms primarily breathe, as per the provided text?

A. Through gills B. Through lungs C. Through their moist skin D. Through spiracles

Q2.Besides having a pair of lungs, through which other organ can frogs breathe?

A. Gills B. Spiracles C. Moist skin D. Tracheal tubes

Q3.According to the provided data, what is the approximate percentage of oxygen in exhaled air?

A. 21% B. 0.04% C. 16.4% D. 4.4%

Q4.What is the approximate percentage of carbon dioxide in inhaled air, as per the given information?

A. 4.4% B. 0.04% C. 16.4% D. 21%

Q5.Which of the following statements accurately describes gills in fish, according to the provided text?

A. Gills are internal organs that filter water for nutrients. B. Gills are projections of the skin and are well supplied with blood vessels for gas exchange. C. Gills are primarily used for propulsion and maintaining buoyancy in water. D. Gills are responsible for regulating body temperature in aquatic environments.

Q6.What is the primary function of respiration in plants?

A. To produce glucose through photosynthesis. B. To release excess water vapor into the atmosphere. C. To ensure their survival by taking in oxygen and giving out carbon dioxide. D. To absorb essential minerals from the soil.

Q7.What are the tiny pores on the leaves of plants called, which facilitate the exchange of oxygen and carbon dioxide?

A. Lenticels B. Stomata C. Chloroplasts D. Epidermis

Q8.How do root cells of plants obtain oxygen for generating energy?

A. They absorb oxygen directly from the water dissolved in the soil. B. They take up air from the air spaces present between the soil particles. C. They produce oxygen through a specialized process in the root tips. D. They receive oxygen transported from the leaves through the vascular system.

Q9.In the cells of organisms, what are the products formed when oxygen is used to break down glucose?

A. Starch and water B. Carbon dioxide and water C. Proteins and fats D. Oxygen and glucose

Q10.How do different parts of a plant respire?

A. Only the leaves are capable of independently taking in oxygen and giving out carbon dioxide. B. All parts of the plant respire collectively through a centralized system. C. Each part of the plant can independently take in oxygen from the air and give out carbon dioxide. D. Respiration primarily occurs in the roots, which then supply oxygen to other parts.

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Science Practice Quiz 181