Recent questions tagged ch15

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Cytokinins help in retention of chlorophyll and delayed senescence in leaves.}\\\text{Reason:The hormone cytokinin stimulates root initiation.}\end{array}$

asked Apr 9, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Some of the plants flower only in summer whereas some flower in winters.}\\\text{Reason:These flowers require specific photoperiods for flowering.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses :

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:If the long dark period is interrupted by flash of light in xanthium it will not flower.}\\\text{Reason:Xanthium is a long day plant in which case a continuous long light period is essential for flowering.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The isolated aleurone layer induces amylase activity when Gibberellic acid is added.}\\\text{Reason:Enzyme amylase converts insoluble starch to soluble sugars.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:In germinating seeds fats are stored as reserve food material and are rich in glyoxysomes.}\\\text{Reason:Germinating seeds are responsible for the conversion of fats into sugar to provide energy to germinating seeds.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:In the actively growing herbaceous plants the axillary buds are generally dormant.}\\\text{Reason:It is because of apical dominane due to the presence of auxins.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses :

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:In plants during water stress and drought conditions ABA plays an important role.}\\\text{Reason:When the ABA is applied exogeneously it promotes stomatal opening.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses :

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:When the cytokinin is applied to the plants it induces senescence.}\\\text{Reason:Cytokinins promote the breakdown of roteins,chlorophyll and nucleic acids.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Ethylene is a gaseous phytohormone.}\\\text{Reason:It is responsible for the ripening of many fruits}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Dry seeds do not germinate.}\\\text{Reason:The most important external factor for seed germination is water.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The pigment cytochrome controls photomorphogenetic responses.}\\\text{Reason:Cytochrome pigment occurs in two photoreversible forms.}\end{array}$

asked Apr 8, 2014 by sreemathi.v

1 answer

Match the words for column I with Column II:In column I are given phytohormones and in column II their functions.

asked Apr 8, 2014 by sreemathi.v

1 answer

Match the words of the two columns :

asked Apr 8, 2014 by sreemathi.v

1 answer

6-benzylaminopurine (BAP) belongs to which class of plant growth regulators or hormones ?

asked Apr 3, 2014 by pady_1

1 answer

Indole-3-acetic acid (IAA) belongs to which class of plant growth regulators or hormones ?

asked Apr 3, 2014 by pady_1

0 answers