1. Which of the following is a characteristic of plant meristems? A. They are non-dividing regions B. They are found only in roots C. They are sites of active cell division D. They store food
2. Which part of the plant is primarily responsible for the transport of sugars? A. Phloem B. Xylem C. Root D. Leaf
4. Which of the following is involved in seed dormancy breaking? A. Cytokinins B. Gibberellins C. Ethylene D. Auxins
5. Which of the following best describes a plant's response to gravity? A. Gravitropism B. Phototropism C. Hydrotropism D. Thigmotropism
6. Which part of the plant is responsible for the production of pollen? A. Ovule B. Anther C. Style D. Stigma
7. Which of the following is responsible for the phototropism response in plants? A. Cytokinins B. Auxins C. Abscisic acid D. Gibberellins
8. Which part of the plant helps in the process of transpiration? A. Stomata B. Roots C. Xylem D. Phloem
9. Which of the following processes leads to the formation of haploid plants in tissue culture? A. Anther culture B. Callus formation C. Embryo culture D. Grafting
10. Which part of the plant is responsible for the absorption of water and nutrients? A. Leaves B. Roots C. Stems D. Flowers
11. Which of the following is true about vegetative propagation in plants? A. It produces genetically identical plants B. It involves the fusion of male and female gametes C. It requires a large amount of space D. It only occurs in flowering plants
12. Which of the following is true about plant cells? A. They lack a cell membrane B. They have a rigid cell wall C. They do not have chloroplasts D. They have no central vacuole
14. Which type of meristematic tissue is responsible for the increase in girth of the plant? A. Lateral meristem B. Apical meristem C. Intercalary meristem D. Vascular cambium
15. In which type of plant does double fertilization occur? A. Angiosperms B. Gymnosperms C. Algae D. Bryophytes
16. Which hormone is responsible for regulating the dormancy of seeds? A. Cytokinins B. Gibberellins C. Ethylene D. Abscisic acid
17. In applied botany, which of the following is used to increase the drought resistance of crops? A. Genetic modification B. Organic farming C. Crop rotation D. Watering systems
18. Which type of plant growth results in an increase in height? A. Primary growth B. Secondary growth C. Lateral growth D. Reproductive growth
19. Which structure in plants stores food and water? A. Xylem B. Phloem C. Parenchyma D. Sclerenchyma
20. Which of the following techniques in plant biotechnology is used for the production of transgenic plants? A. Gene transfer B. Hybridization C. Grafting D. Cutting
21. Which of the following is a characteristic of gymnosperms? A. They have enclosed seeds B. They produce seeds in cones C. They produce flowers D. They are dicots
22. Which of the following best describes the role of abscisic acid in plants? A. Promotes seed germination B. Inhibits seed germination C. Promotes photosynthesis D. Prevents water loss
23. Which part of the plant is primarily responsible for the production of new cells during growth? A. Apical meristem B. Root cap C. Stem cells D. Leaf
24. Which of the following is the main function of chlorophyll in plants? A. Absorption of water B. Absorption of nutrients C. Absorption of light energy D. Absorption of oxygen
26. Which of the following is true for plant hormones? A. They can only promote growth B. They can have opposite effects on growth C. They are only produced in the roots D. They are produced in the leaves only
27. Which part of the plant is responsible for the absorption of water and nutrients? A. Leaves B. Roots C. Stems D. Flowers
31. Which of the following hormones is involved in seed dormancy? A. Cytokinins B. Abscisic acid C. Auxins D. Gibberellins
32. Oxygen evolved during photosynthesis supports: A. Respiration B. Combustion C. Nitrogen fixation D. Transpiration
33. Which type of meristematic tissue is responsible for the increase in length of plants? A. Apical meristem B. Lateral meristem C. Intercalary meristem D. Vascular cambium
34. Which of the following is a function of auxins? A. Promotion of fruit ripening B. Prevention of leaf abscission C. Promotion of seed germination D. Promotion of stem elongation
36. Which plant hormone is primarily responsible for fruit ripening? A. Ethylene B. Cytokinin C. Gibberellin D. Auxin
37. Which part of the plant is responsible for the production of pollen grains? A. Anther B. Stigma C. Style D. Ovary
38. Which gas is mainly responsible for fruit ripening? A. Oxygen B. Nitrogen C. Carbon dioxide D. Ethylene
39. In plant tissue culture, what is the primary purpose of adding agar to the medium? A. To provide a solid support for plant cells B. To supply nutrients C. To control temperature D. To regulate pH
40. What is the key function of root hairs in plants? A. Increase surface area for absorption B. Anchor the plant in the soil C. Conduct water to the leaves D. Store food
42. Which part of the plant absorbs most of the water and nutrients? A. Stem B. Leaves C. Roots D. Flowers
43. Which plant hormone inhibits leaf senescence? A. Ethylene B. Cytokinins C. Auxins D. Gibberellins
44. Which process is directly influenced by the presence of light in plants? A. Cell division B. Photosynthesis C. Transpiration D. Germination
45. Which of the following is a role of cytokinins in plants? A. Inhibit seed germination B. Promote cell division C. Regulate photosynthesis D. Inhibit fruit ripening
46. Which part of the plant contains the greatest amount of chlorophyll? A. Roots B. Stem C. Leaves D. Flowers
47. What is the result of the process of double fertilization in angiosperms? A. Formation of a zygote and endosperm B. Formation of pollen grains C. Formation of fruit D. Formation of seed coat
48. Which hormone is associated with the stress response in plants? A. Gibberellins B. Auxins C. Abscisic acid D. Cytokinins
49. In plants, which structure is responsible for the synthesis of auxins? A. Shoot apical meristem B. Root apical meristem C. Vascular cambium D. Leaf blades