Question 2 :
Identify the root which characterized by the swollen apex and tapered end.

Question 11 :
Select the correct code. Primary root is$1$. Positively geotropic<br/>$2$. Positively hydrotropic<br/>$3$. Negatively geotropic<br/>$4$. Negatively hydrotropic.

Question 13 :
Brownish branches coming down from crown of Banyan tree and reaching the soil are

Question 25 :
In which of the following plant, one plant penetrate its root into the host plant?

Question 26 :
Thick unbranched roots found in corms and rhizomes of some plants are

Question 28 :
In which of the following plant roots are modified for the respiration?

Question 29 :
Which two of these vegetables correctly represent the homologous structures?<br>Potato, Tomato, Radish, Brinjal, Carrot, Bottle-ground

Question 30 :
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 32 :
In<i>&#160;Sonneratia,</i> many roots come out of the substratum and grow vertically upwards. They are

Question 38 :
When&#160;a plant is not reproducing, most of its cytokinins are produced in its:

Question 39 :
Assertion: In floating aquatic plants, root caps are absent. Reason: Root pockets are present in aquatic plants.

Question 42 :
Root hairs are found in large numbers at ......... of roots.

Question 48 :
Given are some difference between an underground stem and a root. Select the option that identifies the incorrect pair of differences.<br/><table class="wysiwyg-table"><tbody><tr><td></td><td><b>Underground stem</b></td><td><b>Root</b></td></tr><tr><td>(i)</td><td>It is differentiated into nodes and internodes</td><td>it is not differentiated in to nodes and internodes.</td></tr><tr><td>(ii)</td><td>Scale leaves are present at the nodes.</td><td>Scale leaves are absent in&#160;roots.</td></tr><tr><td>(iii)</td><td>Axillary buds are present in the axil of scale leaves.</td><td>Axillary buds are present at root tips.</td></tr><tr><td>(iv)</td><td>Branches arise exogenously.</td><td>Branches arise endogenously.</td></tr><tr><td>(v)</td><td>Flowers and fruits absent<br/></td><td>Flowers and fruits&#160;are absent.</td></tr><tr><td>(vi)</td><td>These usually perform the function of food storage.</td><td>These usually perform the function of food storage.</td></tr></tbody></table>