Tag: forms of root

Questions Related to forms of root

In monocots, ............ root system is observed.

botany root - external morphology root systems root system in plants forms of root

  1. Tap root

  2. Fibrous root

  3. Pneumatophores

  4. None of these

Show answer
Correct Option: B
Explanation:

The monocotyledonous plants possess the adventitious or the fibrous type of root system. There are many fine thread-like branches which develop from any other part of the plant rather than the radicle. These type of roots do not grow much deeper but spread in the region widely to provide support the plant.

The roots of submerged aquatic plants grows

botany root - external morphology root systems root system in plants forms of root

  1. Under the ground

  2. Above the ground

  3. Under the water

  4. Above the water

Show answer
Correct Option: C
Explanation:

Plants that grow completely inside water and their roots are affixed to the soil under water with their leaves, stems and existing blooms of a plant are also submerged under normal water level.

So the correct option is 'Under the water'

Growth of tap root is

botany root - external morphology root systems root system in plants forms of root

  1. Towards gravity

  2. Towards light

  3. Away from gravity

  4. Away from air

Show answer
Correct Option: A
Explanation:

The of tap roots is said to be towards gravity because the tap roots grow downward into the ground to absorb water and nutrients from deeper parts of the soil.

So, the correct answer is 'Towards gravity'.

Roots developed from parts of the plant other than radicle are called

botany root - external morphology root systems root system in plants forms of root

  1. Tap roots

  2. Fibrous roots

  3. Adventitious roots

  4. Nodular roots

Show answer
Correct Option: C
Explanation:

Adventitious roots are the type of roots that are grown from different parts of plants such as stem, leaf and tubers etc. These are used in vegetative propagation.
Correct option is C.

The plant part which exhibits negative geotropism is

botany root - external morphology root systems root system in plants forms of root

  1. Root

  2. Stem

  3. Branch

  4. Leaves

Show answer
Correct Option: B
Explanation:

Stem the supportive and holding part of a plant that grows from plumule and attracts towards a light and normally grows above the ground and considered to be negatively geotropic.

So the correct option is 'stem'

Still roots are

botany root - external morphology root systems root system in plants forms of root

  1. Primary root

  2. Adventitious root

  3. Secondary root

  4. Tap root

Show answer
Correct Option: B
Explanation:
  • Stilt roots are adventitious roots. They arise from the lower nodes of stem and enter the soil and become stronger. They help in the anchorage. 
  • For example, maize and sugarcane. So, the correct answer is 'Adventitious Root'.

Fusiform roots are found in   

botany root - external morphology root systems root system in plants forms of root

  1. Solanum tuberosum

  2. Clocasia

  3. Ducus carota

  4. Raphanus sativus

Show answer
Correct Option: D
Explanation:

Fusiform root is those roots, which are swollen from middle and narrow towards the bottom parts. 

 Solanum tuberosum  It is a stem, not a root
 Colocasia Corm stem  
 Ducus carota  Conical root
 Raphanus sativus  Fusiform root

So, the correct answer is ' Raphanus sativus '

Which of the following correctly matches:

botany root - external morphology root systems root system in plants forms of root

  1. Monstera Fibrous root

  2. Dahlia Fasciculate root

  3. Azadirachta Adventitious roots

  4. Basil Pop roots

Show answer
Correct Option: A,B
Explanation:
Monstera has a fibrous root system, in which the primary root is short-lived and is replaced by a large number of roots. Dahlia has an adventitious root system and has fasciculated roots, in which tuberous roots arise in a cluster from the base of the stem. Azadirachta or neem has a tap root system with single thick long root with many thin roots grown from it. Basil plants also have a tap root system.

So, the correct options are 'Monstera Fibrous root and Dahlia Fasciculate root'.

Fasiculated roots for food storage and vegetative propagation are found in

botany root - external morphology root systems root system in plants forms of root

  1. Ipomoea batata

  2. Raphanus sativus

  3. Grasses

  4. Dahlia

Show answer
Correct Option: D
Explanation:

Fasciculated roots is a modified adventitious root.

  • These roots are either swollen or they form root tubers in clusters.

  • Eg- Dahlia and Asparagus.

  • In Dahlia, these swollen roots lie at the base of the stem whereas, in Asparagus the swollen roots occur at intervals on the roots.

  • So, the correct answer is 'Dahlia'.

Stilt roots are reported from

botany root - external morphology root systems root system in plants forms of root

  1. Pandanus (screw pine)

  2. Radish

  3. Mango-ginger

  4. Bryophyllum

Show answer
Correct Option: A
Explanation:

Stilt root is an adventitious root, which develops from the basal nodes present on the main axis. This type of root provides mechanical support to the plant. 

 Pandanus (screwpine)  Stilt root
 Radish Fusiform root 
 Mango- ginger Rhizome 
 Bryophyllum Develop from the adventitious bud present on the leaves.

So, the correct answer is  ' Pandanus (screwpine) '.