1. What kind of reaction occurs in single bonded functional group?
substitution
addition
dissociation
none
2. Which one is used as electrolyte in salt bridge?
KCl,KNO3,NH4Cl \mathrm{KCl}, \mathrm{KNO}_{3}, \mathrm{NH}_{4} \mathrm{Cl} KCl,KNO3,NH4Cl
KCl,K2SO4,Na2SO4 \mathrm{KCl}, \mathrm{K}_{2} \mathrm{SO}_{4}, \mathrm{Na}_{2} \mathrm{SO}_{4} KCl,K2SO4,Na2SO4
KCl,NH4Cl,Na2CO3 \mathrm{KCl}, \mathrm{NH}_{4} \mathrm{Cl}, \mathrm{Na}_{2} \mathrm{CO}_{3} KCl,NH4Cl,Na2CO3
KCl,NH4Cl,NaNO3 \mathrm{KCl}, \mathrm{NH}_{4} \mathrm{Cl}, \mathrm{NaNO}_{3} KCl,NH4Cl,NaNO3
3. What is the name of the hyphae which sucks food from its host body?
Mycelium
hostorium
rhizoid
rhizomorph
4. Chromosome number of which plant is 24? 24 ? 24?
paddy
wheat
jute
maize
5. In which one unique water vascular system is found?
Astropecten
Pila
Spongilla
Aurelia