Biology:11 Plant growth regulators class 11

Q1. IAA is a indole compound

Q2. GA is related to terpenes 

Q3.ABA is carotenoid derivatives

Q4. C2 H4 is a gaseous hormone

Q5. kinetin is adenine derivatives

Q6. Auxin discovered by C.darwin and f .Darwin as well as FW went

Q7.cytokinin discovered by Miller and slug 

Q8.gibberellin is discovered by kurosawa's 

Q9.experiment on canary grasses conducted by Darwin

Q10. auxin first isolated from coleoptile of Seedling by FW went 

Q11.gibberellins have been reported from Fungi and higher plants of more than hundred types

Q12. plant growth hormones acidic in nature are auxin ethylene and ABA  

Q13.gibberellins leads to blotting delay senescence, increase the Grapes stalk ,improves Apple shape

Q14. GA is used to spread up malting process in Brewing industry 

Q15.spraying juvenile conifer with GA3 hasten  the maturity ,thus leading to early seed production 

Q16.GA3 is a commercial available gibberellin acid

Q17.GA3 can increase the length of internode in sugarcane

Q18. cytokine in a formed primarily in root 

Q19.kinetin, modified adenine ,purine is discovered from the autoclaved Herring sperm DNA

Q20. in plant there is open form of growth

Q21. the period of growth divided into three phase 

Q22.wall thickening by  plasmic modification is involved in phase of cell of maturation 

Q23.differentiation phase deals with increased vasculation,cell enlargement and  cell wall  deposition 

Q24.exponential phase deals with enlargement of cell and constant increase in growth rate 

Q25.arithmetic growth is constant growth

 it is found in root and shoot cells

Q26. sigmoid growth curve shows bacteria growing in culture medium organism growing in natural habitats and all cells tissues and organ.