morphology of Root

1. [A] : All roots are positively geotropic.
[R] : Respiratory roots are achlorophyllous.
1) A and R are correct and R is the correct explanation of A
2) A and R are correct but R is not the correct explanation of A
3) A is true but R is false 4) A is false but R is true
2. Complete tap root stores food material in
i) Raphanus ii) Daucus iii) Beta vulgaris
1) i and iii 2) ii and iv 3) only ii 4) i and ii
3. Adventious respiratory roots are seen in
1) Jussiaea 2) Avicennia 3) Rhizophora 4) Trapa
4. Plants with the following root modifications are used as green manure
1) Parasitic roots 2) Photosynthetic roots 3) Nodular roots 4) Storage roots
5. Study the following and identify the correct item groups
i) Jussiaea
Free floating hydrophyte
Floating roots help in respiration
ii) Dolichos
Legume plant
Modified roots convert N2 to NH3
iii) Orobanche
Complete root parasite
Damages tobacco crop
iv) Striga
Partial root parasite
Damages paddy crop
1) i and iv 2) iii and iv 3) i and iii 4) i, ii and iii
6. One of the following plants develops parasitic roots at its earlier stages and later becomes autotrophic
1) Rafflesia 2) Balanophora 3) Santalum album 4) Cuscuta
7. The plant with largest flowers in the plant kingdom is a/an
1) Epiphyte 2) Hydrophyte 3) Parasite 4) Autotroph
8. Inulin is stored in the storage roots of
1) Asparagus 2) Ruellia 3) Dahlia 4) Ipomoea
9. [A] : Vanda is an epiphyte.
[R] : It grows in deficient water supply condition.
1) A and R are correct and R is the correct explanation of A
2) A and R are correct but R is not the correct explanation of A
3) A is true but R is false 4) A is false but R is true
10. Choose the incorrect pair
1) Modified roots of Taeniphyllum – Absorb CO2 and H2O from atmosphere
2) Modified roots of Loranthus – Absorb organic food from host
3) Modified roots of Avicennia – Absorb O2 from atmosphere
4) Modified roots of Beta vulgarus – Store sugars