Transport Systems Quiz
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5 questions, one answer each
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1. Which plant tissue transports sucrose and amino acids?
- A. Xylem
- B. Phloem
- C. Root hair cells
- D. Stomata
2. Which condition would increase the rate of transpiration?
- A. Low temperature
- B. High humidity
- C. High wind speed
- D. Darkness
3. What is the function of lymphocytes?
- A. Ingesting pathogens directly
- B. Releasing antibodies specific to a pathogen
- C. Clotting blood at a wound
- D. Transporting oxygen
4. Why do red blood cells have no nucleus?
- A. To reduce their surface area
- B. To allow more space for haemoglobin, increasing oxygen-carrying capacity
- C. To prevent them from dividing
- D. To make them lighter for faster movement
5. A patient is vaccinated against a disease. Years later they are exposed to the same pathogen and show no symptoms. Which explanation is correct?
- A. The vaccine directly killed the pathogen on exposure
- B. Memory cells produced after vaccination allow a fast, large antibody response before symptoms develop
- C. Phagocytes only respond after vaccination, not before
- D. The patient's blood no longer contains plasma