This quiz works best with JavaScript enabled. Home > Plant Biology > Plant Biology – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Plant Biology Quiz 22 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Auxin is a growth hormone in plants that are found/made in ..... A) The tips of the plant shoots and roots. B) The middle of the plant. C) The leaves. D) The seeds. Show Answer Correct Answer: A) The tips of the plant shoots and roots. 2. Tissue in plants that conducts water and nutrients up from the roots to the rest of the plant. It also forms the woody part of plants. A) Vascular cambium. B) Cork cambium. C) Xylem. D) Phloem. Show Answer Correct Answer: C) Xylem. 3. More root hairs will lead to A) Less transpiration. B) More transpiration. C) Closure of stomata. D) More guttation. Show Answer Correct Answer: B) More transpiration. 4. The plant embryo in a seed begins to grow again during A) Germination. B) Fertilization. C) Pollination. D) Dormancy. Show Answer Correct Answer: A) Germination. 5. Which of these is true? A) Xylem vessels carry water and dissolved minerals up the plant. B) Phloem tissue carry water and dissolved minerals up the plant. C) Xylem vessels carry dissolved sucrose up and down the plant. D) None of above. Show Answer Correct Answer: A) Xylem vessels carry water and dissolved minerals up the plant. 6. The plant male sex cell is also called the ..... A) Anther. B) Pollen grain. C) Ovary. D) Ovule. Show Answer Correct Answer: B) Pollen grain. 7. What type of plant has BOTH seeds and vascular tissue A) Angiosperms. B) Gymnosperms. C) Ferns and angiosperms. D) Angiosperms and gymnosperms. Show Answer Correct Answer: D) Angiosperms and gymnosperms. 8. Leaves capture light from the sun by using light absorbing pigments. This light absorbing pigment is called: A) Pollen. B) Chloroplast. C) Chlorophyll. D) Auxin. Show Answer Correct Answer: C) Chlorophyll. 9. Which structure serves the same function as the yolk of a bird egg? A) Fruit. B) Cuticle. C) Seed. D) Cotyledon. Show Answer Correct Answer: C) Seed. 10. Where does photosynthesis happen in a plant? A) Flower. B) Leaf. C) Stem. D) Roots. Show Answer Correct Answer: B) Leaf. 11. What is the primary function of companion cells? A) To move sugars into and out of the phloem. B) To provide structural support fo the plant. C) To pump water and minerals up the xylem. D) To serve as a sink for manufactured sugars. Show Answer Correct Answer: A) To move sugars into and out of the phloem. 12. A plant that is moving towards a stimulus is showing ..... tropism. A) Positive. B) Negative. C) Root. D) Shoot. Show Answer Correct Answer: A) Positive. 13. In a germinating seed, the downward growth of roots and upward growth of leaves and stems are the plant's responses to ..... A) Sunlight. B) Gravity. C) Osmosis. D) Water. Show Answer Correct Answer: B) Gravity. 14. Which of the following is correct relationship between hormone and its function? A) Absisic acid = Promote root growth. B) Ethylene = Fruit maturation. C) Auxin = Inhibit seed germination. D) Cytokinin = Drought tolerance. Show Answer Correct Answer: B) Ethylene = Fruit maturation. 15. What are the openings on the underside of leaves that let carbon dioxide into the leaf and let oxygen out? A) Chloroplasts. B) Stomata. C) Stomach. D) Cuticle. Show Answer Correct Answer: B) Stomata. 16. Which one of these isn't a characteristic of the bryophytes? A) First non aquatic plants. B) Adapted to be fixed to the ground and sustain. C) Moist habitat. D) Vascular tissue. Show Answer Correct Answer: D) Vascular tissue. 17. What kind of gas do plants produce during photosynthesis? ? ? ? ? ? A) Oxygen. B) Carbon Dioxide. C) Glucose. D) Roots. Show Answer Correct Answer: A) Oxygen. 18. What are the cells that make up Phloem? A) Spiracles. B) Sieve Tube Cells. C) Vessel Cells. D) Tracheary Elements. Show Answer Correct Answer: B) Sieve Tube Cells. 19. What adaptation allowed plants to grow tall? A) Vascular tissue. B) Roots. C) Stems. D) Fronds. Show Answer Correct Answer: A) Vascular tissue. 20. How is the translocation of water through capillarity explained? A) As water transpires from the leaves, a pull is created on the column of water. B) As wind speed and temperature increase the rate of translocation increases. C) The root tissues, full of water, exert pressure that forces water up the xylem. D) Water moves upwards due to the adhesion of the water molecules to tracheid walls. Show Answer Correct Answer: D) Water moves upwards due to the adhesion of the water molecules to tracheid walls. ← PreviousNext →Related QuizzesPlant Biology Quiz 1Plant Biology Quiz 2Plant Biology Quiz 3Plant Biology Quiz 4Plant Biology Quiz 5Plant Biology Quiz 6Plant Biology Quiz 7Plant Biology Quiz 8Plant Biology Quiz 9Plant Biology Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books