Recent questions tagged medium

The names valvate, imbricate and vexillary or pappilomatous are classification to describe

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Aestivation is

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Based on the position of calyx, corolla and androecium in respect of the ovary on thalamus, the flowers are described as

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The difference between a pinnatel compound leaf and a palmately compound leaf is that

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The pattern of arrangement of leaves on the stem is called

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A leaf is said to be compound when

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The three parts of leaf are

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A flower may be tetramerous when the floral appendages are in multiple of

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Bond order of $N-O$ bonds in nitrate ions is :

asked Apr 4, 2014 by meena.p

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The four different kinds of whorls arranged successively on the stalk are

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The arrangement of flowers on the floral axis is termed as

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NPK denotes

asked Apr 4, 2014 by sreemathi.v

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From the region of maturation, some epidermal cells that are thin, very delicate, thread like structures that absorb water and minerals are called

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The main functions of the root system are

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The secondary and tertiary roots are

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The fibrous root system are roots that originate from

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The main functions of the stem are

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The modification of root in turnip is

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The fibrous root system are roots that originate from

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

asked Apr 4, 2014 by sreemathi.v

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

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

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

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Iron deficiency results in

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Active ion uptake means

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A diatomic molecule has a dipole moment equal to $1.2 \;D$ , If bond length is $1.0\;a^{\circ}$ What fraction of electronic charge 'e' exists on each atom ?

asked Apr 4, 2014 by meena.p

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Plant ash indicates

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The element that causes toxic effect upon protoplasm are

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Plastocyanin contains

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Which of the following are isoelectronic and isostructural ? $NO_3^{-},CO_3^{2-}, ClO_3^{-},SO_3$

asked Apr 4, 2014 by meena.p

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Hydroponics is

asked Apr 4, 2014 by sreemathi.v

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

asked Apr 4, 2014 by sreemathi.v

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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

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

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Chlorosis in plants occurs due to

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Which of the following is present in chlorophyll molecule

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

asked Apr 4, 2014 by sreemathi.v

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Statement 1: Band gap in germanium is small. Statement 2 : The energy spread of each germanium atomic energy level in infinitesimally small.

asked Apr 4, 2014 by meena.p

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

asked Apr 4, 2014 by sreemathi.v

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

asked Apr 4, 2014 by sreemathi.v

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Statement 1: p-hydroxybenzonic acid has a lower boiling point than $O- hydroxybenzonic acid. Statement 2: O-Hydroxybenzonic acid has intramolecular hydrogen bonding.

asked Apr 4, 2014 by meena.p

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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

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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

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Statement 1: $LiCl$ is predominantly a covalent compound. Statement 2: Electronegativity difference between $Li$ and $Cl$ is too small.

asked Apr 4, 2014 by meena.p

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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

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

asked Apr 4, 2014 by sreemathi.v

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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

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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

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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

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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

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