This quiz works best with JavaScript enabled. Home > Plant > Physiology > Plant Physiology – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Plant Physiology Quiz 2 (5 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Trees that form wide vessels early in the season and narrower vessels later in the season are called A) Diffuse porous. B) Monocots. C) Ring porous. D) None of above. Show Answer Correct Answer: C) Ring porous. 2. The area of the leaf stalk that enables leaf drop and protects the stem from dessication and pathogen entry. A) Branch bark ridge. B) Branch collar. C) Abscission zone. D) None of above. Show Answer Correct Answer: C) Abscission zone. 3. This conductive tissue is composed of tracheids, fibers and parenchyma cells in gymnosperms A) Xylem. B) Phloem. C) Cambium. D) None of above. Show Answer Correct Answer: A) Xylem. 4. These provide a large surface area for absorbing sunlight & CO2. They also facilitate gas exchange. A) Twigs. B) Buds. C) Leaf blades. D) None of above. Show Answer Correct Answer: C) Leaf blades. 5. These trees have only one apical meristem: A) Pines. B) Junipers. C) Oaks. D) Palms. Show Answer Correct Answer: D) Palms. ← PreviousRelated QuizzesPlant QuizzesPlant Physiology Quiz 1 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books