This quiz works best with JavaScript enabled. Home > Plant Biology > Studies > Plant Biology – Quiz 42 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Plant Biology Quiz 42 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Many everyday processes in plants operate rhythmically on a daily, monthly orannual basis. Plants also show longer cycles of behavior that are influenced by daylength. This response to day length is called ..... A) Gravitropism. B) Phototropism. C) Photoperiodism. D) Thigmotropism. Show Answer Correct Answer: C) Photoperiodism. 2. Reproduction in plants? ? ? ? ? ? ? A) Plants? ? ? ? ? ? /. B) They reproduce when they are pollinated. C) Plants do not reproduce. D) Plants reproduce when they are not pollinated. Show Answer Correct Answer: B) They reproduce when they are pollinated. 3. Why do nonvascular plants grow close to the ground? A) To get less sunlight. B) For protection. C) For space. D) To absorb water. Show Answer Correct Answer: D) To absorb water. 4. Where are photosystems I and II found? A) In the stroma. B) In the thylakoid membrane. C) In the calvin cycle. D) All of the above. Show Answer Correct Answer: B) In the thylakoid membrane. 5. What will happen to the shoot if its tip is being cut off? A) The shoot do not grow longer. B) The shoot will grow towards the sunlight. C) The shoot grows upwards. D) None of above. Show Answer Correct Answer: A) The shoot do not grow longer. 6. Find the incorrect match from the following pairs i) Psilopsida-Psilotum, ii) Lycopsida-Lycopodium iii) Sphenopsida-Selaginella iv) Pteropsida-Pteris A) I). B) Ii). C) Iii). D) Iv). Show Answer Correct Answer: C) Iii). 7. Xylem is responsible for A) Allowing plants to grow roots. B) Allowing moisture to escape through the leaves. C) Carrying water and nutrients down from leaves to roots. D) Carrying water and nutrients up from the roots to the leaves. Show Answer Correct Answer: D) Carrying water and nutrients up from the roots to the leaves. 8. Response to WATER is called ..... A) Phototropism. B) Hydrotropism. C) Thigmotropism. D) Geotropism. Show Answer Correct Answer: B) Hydrotropism. 9. What hormone is responsible for the closing of stomata? A) Abscisic Acid. B) GA (Gibberellin). C) Auxin. D) Phytochrome. Show Answer Correct Answer: A) Abscisic Acid. 10. The stomata of leaves are usually open A) During the day if a plant has too little water. B) At night if a plant has enough water. C) At night if a plant has too little water. D) During the day if a plant has enough water. Show Answer Correct Answer: D) During the day if a plant has enough water. 11. Which of the following provides food for the embryo? A) Fruit. B) Endosperm. C) Cotyledon. D) Vascular cambium. Show Answer Correct Answer: B) Endosperm. 12. Transpiration is a type of ..... A) Liquidation. B) Evaporation. C) Condensation. D) None of above. Show Answer Correct Answer: B) Evaporation. 13. Where can you find seeds? A) In the cap. B) In fruits. C) Under the leaves. D) In flowers. Show Answer Correct Answer: B) In fruits. 14. Which statement about Brown algae is correct? A) Reserve food is Floridean starch. B) Two Equal apical flagella present. C) Cell wall made of cellulose and algin. D) Chlorophyll a and d present. Show Answer Correct Answer: C) Cell wall made of cellulose and algin. 15. The plant transport system are made up of ..... types of tubes. A) 1. B) 2. C) 3. D) Many. Show Answer Correct Answer: B) 2. 16. Plant growth in response to gravity (stems grow upward and roots grow downward) A) Gravitropism. B) Shoot system. C) Nonvascular plant. D) None of above. Show Answer Correct Answer: A) Gravitropism. 17. A tree is damaged and can no longer conduct water throughout. What part of the tree has been damaged? A) Mesophyll. B) Xylem. C) Ground tissue. D) Stomata. Show Answer Correct Answer: B) Xylem. 18. How much rain falls in the desert? A) 10 inches. B) More than 10 inches. C) Less than 10 inches. D) None at all. Show Answer Correct Answer: C) Less than 10 inches. 19. This is occurring when the stem from a plant that's been tipped over grows up towards the light, away from the ground is considered A) Thigmotropism. B) Gravitropism. C) Phototropism. D) Hydrotropism. Show Answer Correct Answer: C) Phototropism. 20. In which type of growth response does the plant's roots grow toward a water source? A) Hydrotropism. B) Phototropism. C) Heliotropism. D) Thigmotropism. Show Answer Correct Answer: A) Hydrotropism. ← PreviousNext →Related QuizzesPlant Biology 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books