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Bot lec - Roots

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Which of the following is NOT TRUE about the Casparian strips?

a)

It acts as an apoplastic barrier

b)

It functions to eliminate harmful minerals

c)

It acts as symplastic barrier

d)

It is made up of suberin

e)

It avoids backflow of water and nutrients

2.

•In dicot roots, the pericycle gives rise to the following:

1.Lateral roots

2.Procambium

3.Vascular cambium

a)

1 only

b)

1 and 3 only

c)

1,2,3

d)

2 and 3 only

3.

Which of the following is responsible for the gravity perception of a root?

a)

Amyloplast

b)

Mucilage

c)

Quiescent center

d)

primordia

4.

Which of the following gives rise to the epidermis?

a)

Ground meristem

b)

Procambium

c)

Protoderm

d)

Vascular cambium

5.

Is pith present in monocot root?

a)

yes

b)

no

6.

Tiny vacuoles merge and cells become longer and wider. This happens in what region?

a)

Root cap

b)

Region of cell division

c)

Root hair zone

d)

Region of elongation

7.

Which of the following statements is NOT TRUE about the pericycle and the lateral roots?

a)

Root hair arise from the pericycle while lateral roots are the outgrowth of the epidermis

b)

Lateral root arise from the pericycle while root hairs are the outgrowth of the epidermis

c)

Root hair has not cuticle while lateral root has it

d)

Root hair and lateral root both increase the absorption of water

e)

They both have the cuticle

8.

In osmosis water will move from ____ diluted solution to ____ diluted solution to reach the equilibrium

a)

less, more

b)

More, less

9.

Source cells: _______ while sink cells: _____

a)

Unload carbohydrates, load carbohydrates

b)

Load carbohydrates, unload carbohydrates

c)

Consume, produce

d)

Both load carbohydrates

10.

This type of root tolerates drought by helping plants use moisture held in deeper soil layers.

a)

Taproot

b)

Fibrous root

c)

Adventitious root

11.

A type of root that helps prevent soil erosion as they anchor plants to the top layers of soil.

a)

Taproot

b)

Fibrous root

12.

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.

a)

Root cap

b)

Region of cell division

c)

Region of elongation

d)

Region of maturation

13.

The vascular bundles are limited in number in:

a)

Monocot roots

b)

Dicot roots

c)

Both monocot and dicot

14.

It is the movement of molecules from a region of high concentration to a region of low concentration.

a)

Diffusion

b)

osmosis

15.

The secondary growth occurs in the _____ of the roots.

a)

cambium

b)

pericycle

c)

phloerm

d)

cortex

e)

pith

16.

Citrullus lanatus is an example of what type of specialized root?

a)

Food storage roots

b)

Water storage roots

c)

Propagative roots

d)

Contractile roots

e)

Pneumatophores

17.

Avicennia nitida is a specialized root of what type

a)

Buttress root

b)

Contractile root

c)

Pneumatophores

d)

Parasitic root

e)

Symbiotic root

18.

This specialized root has peg-like projection known as haustoria that penetrates the outer tissues of the host cells.

a)

Aerial roots

b)

Symbiotic roots

c)

Parasitic roots

d)

Propagative roots

19.

This helps in nitrogen fixation by converting nitrogen to ammonia to use by plant for protein synthesis

a)

Mychorrizae

b)

Rhizobia

c)

velamen roots

d)

prop roots

20.

Which of the following is used as antipyretic and anthelmintic

a)

Begonia coccinea

b)

Alocasia macrorrhizos

c)

Chlorophytum comosum

d)

Imperata cylindrical