Pencils are prepared from the wood of
Pinus vinaster
Juniperus virginiana
Chamaecyparis piscifera
Abies pindrow
Ageing is retarded by
ABA
CKN
GA
C2H4
B.
CKN
Cytokinins are a class of plant growth substances (phytohormones) that promote cell division or cytokinesis, in plant roots and shoots. They are also involved in cell growth and differentiation but also affect apical dominance, axillary bud growth and leaf senescence.
Eg, degradation of protein and chlorophyll was delayed in the detached leaves of Xanthium, if cytokinin was used in a medium.
In Hatch and Slack pathway
chloroplast are of same type
occurs in Kranz anatomy where mesophyll have small chloroplast whereas bundle sheath have granal chloroplast
occurs in Kranz anatomy when mesophyll have small chloroplast where as bundle sheath have larger, agranal chloroplast
Kranz anatomy where mesophyll cells are diffused
Colchicine prevents the mitosis of the cells at which of the following stage?
Anaphase
Metaphase
Prophase
Interphase
Which one is not correct?
Human - Ureotelic
Birds - Uricotelic
Lizards - Uricotelic
Whale - Ammonotelic