Root Structures and Functions Quiz

Which structure in roots enables them to absorb atmospheric moisture in orchids?

• Velamen

• Endodermis

• Pericycle

• Phellogen

How do secondary xylem and secondary phloem form in dicot roots?

• From endodermis

• By division of vascular cambium

• From pith cells

• By elongation of cortex cells

Which root modification is associated with the storage of food and has a conical shape?

• Fusiform root

• Napiform root

• Conical root

• Tuberous root

What is the primary function of casparian strips in the endodermis?

• Storage of food

• Support for vascular cambium

• Regulate water movement

• Provide anchorage

What differentiates monocot roots from dicot roots?

• Presence of passage cells

• Polyarch vascular bundles

• Presence of secondary growth

• Absence of root cap

Which type of adventitious root modification provides better anchorage in marshy plants?

• Pneumatophores

• Prop roots

• Climbing roots

• Floating roots

How does the root cap protect the apical meristem?

• By storing water

• By secreting mucilage

• By absorbing minerals

• By dividing into root hairs

Which layer in the dicot root becomes cork cambium during secondary growth?

• Endodermis

• Pericycle

• Cortex

• Epiblema

In roots, what is the function of passage cells?

• Absorb atmospheric moisture

• Conduct water to xylem

• Form secondary tissues

• Protect the pericycle

What type of root system is suitable for crops like wheat and rice?

• Tap root system

• Fibrous root system

• Adventitious root system

• Napiform root system