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WorksheetsBot lec - Roots
Total questions: 20
Worksheet time: 10mins
Which of the following is NOT TRUE about the Casparian strips?
It acts as an apoplastic barrier
It functions to eliminate harmful minerals
It acts as symplastic barrier
It is made up of suberin
It avoids backflow of water and nutrients
•In dicot roots, the pericycle gives rise to the following:
1.Lateral roots
2.Procambium
3.Vascular cambium
1 only
1 and 3 only
1,2,3
2 and 3 only
Which of the following is responsible for the gravity perception of a root?
Amyloplast
Mucilage
Quiescent center
primordia
Which of the following gives rise to the epidermis?
Ground meristem
Procambium
Protoderm
Vascular cambium
Is pith present in monocot root?
yes
no
Tiny vacuoles merge and cells become longer and wider. This happens in what region?
Root cap
Region of cell division
Root hair zone
Region of elongation
Which of the following statements is NOT TRUE about the pericycle and the lateral roots?
Root hair arise from the pericycle while lateral roots are the outgrowth of the epidermis
Lateral root arise from the pericycle while root hairs are the outgrowth of the epidermis
Root hair has not cuticle while lateral root has it
Root hair and lateral root both increase the absorption of water
They both have the cuticle
In osmosis water will move from ____ diluted solution to ____ diluted solution to reach the equilibrium
less, more
More, less
Source cells: _______ while sink cells: _____
Unload carbohydrates, load carbohydrates
Load carbohydrates, unload carbohydrates
Consume, produce
Both load carbohydrates
This type of root tolerates drought by helping plants use moisture held in deeper soil layers.
Taproot
Fibrous root
Adventitious root
A type of root that helps prevent soil erosion as they anchor plants to the top layers of soil.
Taproot
Fibrous root
The root region which functions to protect the delicate tissues from damage whenever the young root tip pushes through often angular and abrasive soil particles.
Root cap
Region of cell division
Region of elongation
Region of maturation
The vascular bundles are limited in number in:
Monocot roots
Dicot roots
Both monocot and dicot
It is the movement of molecules from a region of high concentration to a region of low concentration.
Diffusion
osmosis
The secondary growth occurs in the _____ of the roots.
cambium
pericycle
phloerm
cortex
pith
Citrullus lanatus is an example of what type of specialized root?
Food storage roots
Water storage roots
Propagative roots
Contractile roots
Pneumatophores
Avicennia nitida is a specialized root of what type
Buttress root
Contractile root
Pneumatophores
Parasitic root
Symbiotic root
This specialized root has peg-like projection known as haustoria that penetrates the outer tissues of the host cells.
Aerial roots
Symbiotic roots
Parasitic roots
Propagative roots
This helps in nitrogen fixation by converting nitrogen to ammonia to use by plant for protein synthesis
Mychorrizae
Rhizobia
velamen roots
prop roots
Which of the following is used as antipyretic and anthelmintic
Begonia coccinea
Alocasia macrorrhizos
Chlorophytum comosum
Imperata cylindrical
