Growth and Development in Plants Set 3
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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Growth and Development in Plants Set 3
Q1 | Which of the following is mismatched statement for effect of auxin ?
- It inhibits lateral growth
- It induces stem elongation in plant
- It induces cell division
- It helps in further elongation of some regions
Q2 | Which hormore is essential for initial growth of root ?
- IBA
- GA
- ABA
- Kinetin
Q3 | Which is the specific use of synthetic auxin in higher concentration ?
- Weedicide
- Inhibits growth of lateral buds
- Inhibits initial process of root formation
- Regulates cell elongation
Q4 | Which of the following organic chemical is synthetic ?
- 2-4-D
- IAA
- GA
- IBA
Q5 | Which is required to inhibit germination of food storing part of potato ?
- ABA
- IAA
- IBA
- GA
Q6 | This hormone induces growth of root but inhibits growth of .......
- Apical bud
- Unfertilized fruit developement
- Lateral buds
- Root
Q7 | What is indicated by any of the developing plant if it increase / hyperactivity in lateral buds ?
- It obtains more light
- Cytokinin decreases
- It stores more food
- Auxin decreases
Q8 | From where gibberrelin was isolated for the first time ?
- Penicillium
- Asparagus
- Mucor
- Gibberella
Q9 | Which of the following effect of gibberrelin is observed in plant ?
- Long plant shorten
- Dwarf plant grows in longitudinal axis
- Induces formation of root system
- Yellowing of young leaves
Q10 | Which of the following hormone is responsible for cell division ?
- GA
- IAA
- Cytokinin
- Abscisic acid
Q11 | Garland of green leaves remain green, by treatment of which organic chemical ?
- Cytokinin
- Auxin
- Ethylene
- Gibberrelin
Q12 | Which hormone inhibits senescence of vegetative parts and plants ?
- Auxin
- Cytokinin
- Gibberrelin
- Abscisic acid
Q13 | Which is natural growth inhibitor or senescence inducing hormone ?
- IAA
- ABA
- NAA
- GA
Q14 | Which hormone affects the growth of plant in adverse climatic / environmental condition ?
- Abscisic acid
- Ethylene
- NAA
- 2-4, D
Q15 | Which of the following phenomenon is regulated by abscisic acid ?
- Shoot elongation
- Origin of cell wall and cell elongation
- Opening and closing of stomata
- Abscission of leaf and dormancy
Q16 | Which hormone inhibits formation of new cells ?
- Abscisic acid
- Kinetin
- Gibberrelic acid
- Indol-butaric acid
Q17 | Which of the following is responsible for seed dormancy ?
- Abscissic acid
- Ethylene
- Gibberrelin
- Auxin
Q18 | Name the hormone responsible for activity of chlorophyll in leaves.
- Cytokinin
- Ethylene
- Gibberrelin
- ABA
Q19 | Which of the following is simple, volatile hormone ?
- Ethylene
- ABA
- IAA
- Cytokinin
Q20 | Which of the following statement about ABA is inappropriate ?
- Induces ripening of fruit
- Inhibits seed germination
- Induces dormancy of bud
- Closes stomata
Q21 | Which hormone is absent in dormnant seed ?
- ABA
- Auxin
- GA
- Ethylene
Q22 | Which of the following statement is true for abscisic acid ?
- Inhibits transcription of gene
- Opens stomata
- Reduces senescence
- Acts as weedicide
Q23 | By which physiological process water enters into seed coats of seed ?
- Endosmosi
- Diffusion
- Plasmolysis
- Imbibition
Q24 | What is called the effect of daylight on plant ?
- Phototropic
- Photoperiodism
- Photooxidatio
- Photonastism
Q25 | Which of the following is correct option for seed germination ?
- Emergance of radicle from primary root
- Emergance of primary root forms from radicle
- Development of primary root
- No root formation