Question 3 :
Select the correct code. Primary root is$1$. Positively geotropic<br/>$2$. Positively hydrotropic<br/>$3$. Negatively geotropic<br/>$4$. Negatively hydrotropic.

Question 5 :
Brownish branches coming down from crown of Banyan tree and reaching the soil are

Question 7 :
Identify the root which characterized by the swollen apex and tapered end.

Question 8 :
Rema was in the biology lab. When observing a plant tissue under the microscope, she saw a small out-growth coming from the outermost layer. Which part did she identify?

Question 19 :
In which of the following plant roots are modified for the respiration?

Question 23 :
Assertion: &#160;Presence of pneumatophores (the respiratory roots) is a special adaptation of hydrophytes.<br/> Reason: &#160;Pneumatophores help to take up oxygen from the atmosphere and transports it into the main roots.

Question 29 :
Thick unbranched roots found in corms and rhizomes of some plants are

Question 31 :
In which of the following plant, one plant penetrate its root into the host plant?

Question 34 :
Which two of these vegetables correctly represent the homologous structures?<br>Potato, Tomato, Radish, Brinjal, Carrot, Bottle-ground

Question 43 :
Cassava plant, which stores food in large fleshy storage roots&#160;belong to the genus of

Question 44 :
From which part of turmeric plant (<i>Curcuma longa</i>), the turmeric powder is obtained<br/>

Question 53 :
In one plant, adventitious roots are modified for storage and in the other plant a lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots. They are

Question 54 :
The stem of maize and sugarcane have support roots coming out of the lower nodes of the stem. They are called

Question 56 :
Transition of exarch bundles of root to endarch bundles of stem occurs in <br>

Question 66 :
Root hairs are found in large numbers at ......... of roots.

Question 70 :
The aerial adventitious roots that arise from the nodes or internodes of weak stem plant is&#160;

Question 71 :
Roots that hold horizontal branches of banyan tree in the air are

Question 73 :
Assertion: Root nodules in leguminous plants are inhabited by <i>Anabaena</i> Reason: Leguminous plants are an example of symbiotic nitrogen fixation

Question 74 :
The root cap is not used in absorption of water due to<br/>

Question 75 :
The layer of cells outside the phloem meant for giving rise to&#160;the root branches is called as<br/>

Question 78 :
Assertion : Secondary roots and shoots are plagiogeotropic.<br><br>Reason : Plagiogeotropic roots are those which develop at an angle of $45^{o}$ from the vertical axis.<br>

Question 81 :
Epiphytes like <i>Vanda</i>, develop special layer of absorptive&#160;tissue velamen consisting of 4 or 5 layers of long polygonal&#160;cells. Velamen is formed by<br/>

Question 89 :
A root swollen in the form of closely arranged rings is called

Question 97 :
In a longitudinal section of a root, starting from the tip to upward, the four zones occur in which of the following order?

Question 100 :
Match the following lists.<br/><table class="wysiwyg-table"><tbody><tr><td><br/></td><td>List - I</td><td></td><td>List II</td></tr><tr><td>A)</td><td>Alstonia</td><td>I)</td><td>Roots at lower nodes of the stem</td></tr><tr><td>B)</td><td>Ananus sativus</td><td>II)</td><td>Leaflets are attached at a common point in the leaf</td></tr><tr><td>C)</td><td>Sugarcane</td><td>III)</td><td>Swollen placenta</td></tr><tr><td>D)</td><td>Bombax ceiba</td><td>IV)</td><td>More than two leaves at every node</td></tr><tr><td></td><td></td><td>V)</td><td>Underground lateral branches producing aerial leafy shoots</td></tr></tbody></table>

Question 104 :
Assertion: Clowes reported quiscent centre in <i>Zea mays</i> root, region behind rootcap. Reason: M&#233;rist&#232;me&#160;d'attente&#160;is region similar to this in shoot apex as its cells also have slow DNA replication.