Top 150+ Solved Growth and Development in Plants MCQ Questions Answer
Q. Which hormone affects the growth of plant in adverse climatic / environmental condition ?
a. Abscisic acid
b. Ethylene
c. NAA
d. 2-4, D
Q. Which of the following phenomenon is regulated by abscisic acid ?
a. Shoot elongation
b. Origin of cell wall and cell elongation
c. Opening and closing of stomata
d. Abscission of leaf and dormancy
Q. Which hormone inhibits formation of new cells ?
a. Abscisic acid
b. Kinetin
c. Gibberrelic acid
d. Indol-butaric acid
Q. Which of the following is responsible for seed dormancy ?
a. Abscissic acid
b. Ethylene
c. Gibberrelin
d. Auxin
Q. Name the hormone responsible for activity of chlorophyll in leaves.
a. Cytokinin
b. Ethylene
c. Gibberrelin
d. ABA
Q. Which of the following statement about ABA is inappropriate ?
a. Induces ripening of fruit
b. Inhibits seed germination
c. Induces dormancy of bud
d. Closes stomata
Q. Which of the following statement is true for abscisic acid ?
a. Inhibits transcription of gene
b. Opens stomata
c. Reduces senescence
d. Acts as weedicide
Q. By which physiological process water enters into seed coats of seed ?
a. Endosmosi
b. Diffusion
c. Plasmolysis
d. Imbibition
Q. What is called the effect of daylight on plant ?
a. Phototropic
b. Photoperiodism
c. Photooxidatio
d. Photonastism
Q. Which of the following is correct option for seed germination ?
a. Emergance of radicle from primary root
b. Emergance of primary root forms from radicle
c. Development of primary root
d. No root formation
Q. Which of the following group show viviparous germination ?
a. Rhizophora and Avicinnia
b. Orchid and Rhizophora
c. Maize and Bean
d. Soyabean and Xanthium
Q. Which of the following is found in high concentration in healthy leaf ?
a. Cytokinin
b. Gibberrelin
c. Auxin
d. Ethylene