Science Practice Quiz 57

Q1.What is the primary purpose of making urine, and what type of waste is specifically mentioned as being removed from the blood in the kidneys?

A. To absorb nutrients; oxygenated blood. B. To filter out waste products; nitrogenous waste like urea or uric acid. C. To produce hormones; carbon dioxide. D. To regulate body temperature; excess water.

Q2.Where is carbon dioxide (CO2) removed from the blood in the human body?

A. Kidneys B. Liver C. Lungs D. Stomach

Q3.Which of the following can be considered a waste product generated during photosynthesis in plants?

A. Carbon dioxide B. Nitrogen C. Oxygen D. Water vapor

Q4.How do plants primarily get rid of excess water?

A. Respiration B. Photosynthesis C. Transpiration D. Absorption

Q5.Where are many plant waste products commonly stored within the plant cells?

A. Mitochondria B. Nucleus C. Cellular vacuoles D. Chloroplasts

Q6.In which part of the plant are waste products like resins and gums primarily stored?

A. Young leaves B. Root hairs C. Phloem D. Old xylem

Q7.Besides internal storage and shedding of parts, how else do plants excrete some waste substances?

A. Through their flowers B. Into the atmosphere as gases C. Into the soil around them D. By absorbing them back into roots

Q8.What can be taken as an indication of life?

A. Growth in size B. Reproduction C. Movement of various types D. Consumption of food

Q9.Which of the following best describes autotrophic nutrition?

A. Intake of complex material from other organisms B. Breakdown of food in the alimentary canal C. Synthesis of complex organic material using an external energy source D. Absorption of digested food in the small intestine

Q10.In human beings, where is the digested food primarily absorbed?

A. Stomach B. Large intestine C. Small intestine D. Oesophagus

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Science Practice Quiz 57