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Recent questions tagged ch12

Name the octant in which the point $(2,-4,-7)$ lies.

asked Apr 16, 2014 by rvidyagovindarajan_1

1 answer

Name the octant in which the point $(-3,-1,6)$ lies.

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

Name the octant in which the point $(-4,2,5)$ lies.

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

Name the octant in which the point $(-4,2,-5)$ lies.

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

Name the octant in which the point $(4,2,-5)$ lies.

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

Name the octant in which the point $(4,-2,-5)$ lies.

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

Name the octant in which the point $(4,-2,3)$ lies.

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

Name the Octant in which the point $(1,2,3)$ lies.

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

A point is is $XZ$ plane. What can you say about its $y$ coordinate?

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

A point is on $x-axis$. What are its $y-coordinate $ and $z-coordinate?$

asked Apr 15, 2014 by rvidyagovindarajan_1

1 answer

Which one is a component of ferredoxin?

asked Apr 4, 2014 by sreemathi.v

1 answer

NPK denotes

asked Apr 4, 2014 by sreemathi.v

1 answer

Passage of minerals from top soil to subsoil through seepage of water is known as

asked Apr 4, 2014 by sreemathi.v

1 answer

Phosphorus and nitrogen ions generally get depleted in soil because they usually occur as

asked Apr 4, 2014 by sreemathi.v

1 answer

Theory suggesting that carbon dioxide produced in respiration helps in mineral absorption is called

asked Apr 4, 2014 by sreemathi.v

1 answer

A trace element,also required for plant growth,and in the form of radioactive isotope useful in cancer therapy is

asked Apr 4, 2014 by sreemathi.v

1 answer

Iron deficiency results in

asked Apr 4, 2014 by sreemathi.v

1 answer

Active ion uptake means

asked Apr 4, 2014 by sreemathi.v

1 answer

Plant ash indicates

asked Apr 4, 2014 by sreemathi.v

1 answer

The element that causes toxic effect upon protoplasm are

asked Apr 4, 2014 by sreemathi.v

1 answer

Plastocyanin contains

asked Apr 4, 2014 by sreemathi.v

1 answer

Hydroponics is

asked Apr 4, 2014 by sreemathi.v

1 answer

Plants require two metallic compounds (minerals) for chlorophyll synthesis.They are

asked Apr 4, 2014 by sreemathi.v

1 answer

On the basis of symptoms of chlorosis in leaves a student inferred that this was due to deficiency of nitrogen.This inference could be corrected only if we assume that yellowing of leaves appeared first in

asked Apr 4, 2014 by sreemathi.v

1 answer

Most of the plants obtain nitrogen from the soil in the form of

asked Apr 4, 2014 by sreemathi.v

1 answer

Chlorosis in plants occurs due to

asked Apr 4, 2014 by sreemathi.v

1 answer

Which of the following is present in chlorophyll molecule

asked Apr 4, 2014 by sreemathi.v

1 answer

Which of the following elements is necessary for translocation of sugars in plants

asked Apr 4, 2014 by sreemathi.v

1 answer

Which one of the following essential elements normally obtain directly from the air by the plants

asked Apr 4, 2014 by sreemathi.v

1 answer

Which of the following is not an essential micro-nutrient.

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The active absorption of minerals is inhibited when roots are deprived of oxygen.}\\\text{Reason:Active absorption of minerals require expenditure of metabolic energy which comes from respiration in the presence of oxygen.}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The nodule bacteria fixes nitrogen in presence of pigment leghaemoglobin}\\\text{Reason:The pigment leghaemoglobin acts as oxygen scavenger and creates anaerobic condition which is essential for the activity of enzyme nitrogenase}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The ions move from endodermis to xylem elements by an active process}\\\text{Reason:For movement,metabolic energy comes from respiration }\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

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

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:In nepenthes,lamina is modified to capture insects to get nitrogenous food}\\\text{Reason:The plant proteins are broken down to amino acids which are then absorbed by plants}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Rhizobial aggregates have been observed at distinct sites on curled root hairs }\\\text{Reason:The infection thread is formed by a process of invagination of the hair cell walls in the region of curling}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Many insectivorous plants are able to survive plants are able to survive without feeding on insects.}\\\text{Reason:Growth of insectivorous plants is stimulated when they trap and utilise insects}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Farmers grow a leguminous crop and plough it back in the field}\\\text{Reason:Leguminous plants fix atmospheric nitrogen through symbiotic nitrogen fixing bacteria}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:If you burn a plant,its nitrogen component is given off as ammonia and other gases}\\\text{Reason:Hydroponics does not allow plants to grow well if they are supplied with all the mineral nutrients they need}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Leaves develop chlorosis in the absence of iron}\\\text{Reason:Iron is a constituent of chlorophyll }\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Plants growing in magnesium deficient soils show extensive interveinal chlorosis in leaves}\\\text{Reason:Magnesium is a constituent of chlorophyll}\end{array}$

asked Apr 4, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The deficiency of calcium symptoms first appear in the apical region}\\\text{Reason:Calcium is highly mobile in plants}\end{array}$

asked Apr 3, 2014 by sreemathi.v

1 answer

Match the items in column I with items in column II:

asked Apr 3, 2014 by sreemathi.v

1 answer

Match the items in column I with items in column II:

asked Apr 3, 2014 by sreemathi.v

1 answer

Match the items in column I with items in column II:

asked Apr 3, 2014 by sreemathi.v

1 answer

Which enzyme is an ideal target for chemotherapy because this enzyme is active in most tumors but inactive in most normal cells ?

asked Apr 3, 2014 by pady_1

0 answers

All of the following compounds are capable of forming hydrogen bonds with water except

asked Apr 3, 2014 by pady_1

1 answer

Undifferentiated mass of of parenchyma cells derived from plant tissues or explants is called

asked Apr 3, 2014 by pady_1

1 answer

The technique used by scientists, Guha and Maheswari to culture haploid plantlets was experimented on which plant species ?

asked Apr 3, 2014 by pady_1

0 answers

Which plant tissue culture technique is used to generate haploid plantlets ?

asked Apr 3, 2014 by pady_1

1 answer

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