Tag: root system in plants

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Questions Related to root system in plants

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

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

  1. Tap root

  2. Fibrous root

  3. Pneumatophores

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
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.

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

The roots of submerged aquatic plants grows

  1. Under the ground

  2. Above the ground

  3. Under the water

  4. Above the water
Reveal answer Fill a bubble to check yourself
C Correct answer
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'

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

Growth of tap root is

  1. Towards gravity

  2. Towards light

  3. Away from gravity

  4. Away from air
Reveal answer Fill a bubble to check yourself
A Correct answer
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'.

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

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

  1. Tap roots

  2. Fibrous roots

  3. Adventitious roots

  4. Nodular roots
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

The plant part which exhibits negative geotropism is

  1. Root

  2. Stem

  3. Branch

  4. Leaves
Reveal answer Fill a bubble to check yourself
B Correct answer
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'

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

Still roots are

  1. Primary root

  2. Adventitious root

  3. Secondary root

  4. Tap root
Reveal answer Fill a bubble to check yourself
B Correct answer
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'.
Multiple choice botany root - external morphology root systems root system in plants forms of root

Fusiform roots are found in   

  1. Solanum tuberosum

  2. Clocasia

  3. Ducus carota

  4. Raphanus sativus
Reveal answer Fill a bubble to check yourself
D Correct answer
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 '

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

Which of the following correctly matches:

  1. Monstera Fibrous root

  2. Dahlia Fasciculate root

  3. Azadirachta Adventitious roots

  4. Basil Pop roots
Reveal answer Fill a bubble to check yourself
A,B Correct answer
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'.
Multiple choice botany root - external morphology root systems root system in plants forms of root

Fasiculated roots for food storage and vegetative propagation are found in

  1. <p>Ipomoea batata</p>

  2. <p>Raphanus sativus</p>

  3. Grasses

  4. Dahlia
Reveal answer Fill a bubble to check yourself
D Correct answer
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'.

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

Stilt roots are reported from

  1. Pandanus (screw pine)

  2. Radish

  3. Mango-ginger

  4. Bryophyllum
Reveal answer Fill a bubble to check yourself
A Correct answer
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) '.