Most accepted theory for ascent of sap is
capillary theory
root pressure theory
pulsation theory
transpiration pull
Which of the following is not the feature of gymnosperms?
parallel venation
perennial plants
distinct branches (long and short branches)
xylem with vessels
The bioassay of auxin is
avena curvature test
callus formation
culture of fungus
seed dormancy
A.
avena curvature test
A bioassay is a measurement of the effect of a known or suspected biologically active substance on living material. Went used Avena sativa (oat) coleoptiles in a technique called that Avena coleoptile curvature test for auxin.
Which of the following is/ are grouped under phanerogams?
Angiosperms
Gymnosperms
Pteridophytes
Both (a) and (b)
Which of the following theory gives the latest explanation for the closure of stomata?
ABA theory
Munch Theory
Starch glucose theory
Active K+ transport theory
The trisomy for 21st chromosome is called
Down's syndrome
Turner's syndrome
Sickle cell anaemia
Klinfelter's syndrome
Which is correctly matched?
Apiculture - Honey bee
Pisciculture - Silk moth
Sericulture - Fish
Aquaculture - Mosquito