41. Which hormone is responsible for bolting ?
42. Which hormone is synthesized by root and endosperm?
43. Which hormone is responsible for growth of leaf-apex ?
44. How can a biannual plant be converted into an annual plant?
A. By cold process of seeds
B. By giving more light
C. By giving more oxygen
D. By giving more temperature
Answer : Option A
45. Which of the following reaction is observed in droping of drocera due to insects ?
46. What is responsible for opening and closing of tulip flower ?
47. By which reaction growth of cuscuta occurs on host plant ?
48. Which type of meristematic tissue is found in monocot plant for growth ?
A. Intercalary meristematic tissue
B. Apical meristem tissue
C. Lateral meristem tissue
D. Meristematic tissue
Answer : Option A
49. Which of the following is increased in plants as a result of growth ?
50. Which of the following is criteria for measurement of growth ?