16357.Richmond – Lang effect is
Morphogenesis
Delay of senescence under control of cytokinin
Induction of early flowering
Protection of organs
16358.Vernalization is
Growth curve related to light
Effect of photoperiods on plant growth
Speeding up ability to flower by low temperature
Diurnal photoperiodicty
16360.Indefinite growth of plants is due to presence of
Meristemtic cells
Parenchyma
Permanent tissue
Vascular tissue
16361.Imposed dormancy can be caused due to
Immature embryo
Hard and resistant seed coats
Non availability of water and O2
Mature embryo
16364.Identify the true statement/statements regarding growth and development in organisms.
Growth is intrinsic.
Growth is the physical development while development is the physiological growth.
Growth is accompanied by development.
All of these.
16365.Vernalization treatment can convert
a biennial into an annual.
a spring variety into a winter variety.
an annual into a perennial.
all of these.
16367.The chemical substances like phenolics, caumarins, ferulic acid are
Growth harmones
Growth inhibitors
Germination inhibitors
Germination promoters
16368.Dormancy of seed is
Phase of active growth
Phase of inactive growth
Phase of stimulated growth
Dead condition
16369.Which one of the following grooups comprises synthetic auxin?
2, 4-D; 2, 4, 5 –T and Zeatin
Gibberellic acid, ABA, IAA
2, 4-D, 2, 4, 5 – T and NAA
Cytokinin, IAA, IBA
16370.Germination inhibitors leached out by one plant may inhibit germination of seeds of other plants is called as
Allopathy
Allelopathy
Dormancy
Aromapathy
16371.The chemical nature of kinetin is
Indole acetic acid
Mesopentyl adenine
6-furfuryl amino purine
CH2 = CH2
16373.Phototropic curvature is the result of uneven distribution of:
Auxin
Gibberellin
Phytochrome
Cytokinins
16376.Dormancy, if occur due to internal factors, it is called
Imposed dormancy
Innate dormancy
Quiescence
Dormancy