Multiple Choice QuestionsMost 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
In which form does the food transported in plants?
Sucrose
Fructose
Glucose
Lactose
A.
Sucrose
In palnts, food is produced by a a process known as photosynthesis. It is transported in the form of sucrose through phloem. It is thought that 90% of the total solutecarried in the phloem is the carbohydrate sucrose.
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
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