Sand culture is a component of .... .... [ MPPMT 1999 ]

Which of the following is mobile mineral element in plants ... ... [ CET Chd. 2010]

Which is absent in plant ash? ... ... [ MPPMT 1997]

Match the column ... ..[ EAMCET 2009]

a) Photolysis of water	i) Zinc
b) Diazotrophy	ii) Copper
c) Cytochrome c oxidase	iii) Manganese
d) Biosynthesis of IAA	iv) Molybdenum
- -   - -	Boron

Potassium is involved in .... .... [ CPMT 1991]

The ion controlling stomatal movement is ... ....[ JKCMEE 2007]

Most of the plants obtain nitrogen from the soil in the form of ... ... [ AFMC 2010]

Which one is not a microelement for plants .... ....[ Odisha 2007]

Mineral present in cytochrome is ... .... [ AMU 2001]

Copper is activator of enzyme ... .... [ CBSE 2004]

Deficiency symptoms of nitrogen and potassium are visible first in : …[AIPMT 2014]B27

Minerals known to be required in large amounts for plant growth include: …[AIPMT 2015]B27

The most abundant intracellular cation is …[NEET 2013]B27

The first stable product of fixation of atmospheric nitrogen in leguminous plants is …[NEET 2013]B27

Which is essential for the growth of root tip ? …[NEET 2016]

The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction? [ ReAIPMT 2015]

In which of the following forms is iron absorbed by plants ? [NEET 2018]

Assertion: Excess of manganese induces deficiency of iron, magnesium and calcium. Reason: Excess of manganese competes with uptake of iron and magnesium and inhibits translocation of calcium to shoot apex.

The mineral nutrient mainly concerning with apical meristematic activity:

The essential elements is grouped into four broad categories (i.e., structural elements, energy related chemical compounds, enzyme activator – inhibitor and elements that can alter osmotic potential of a cell) on the basis of their:

Read the following statements: (i) Magnesium (Mg2+) activate enzymes of photosynthesis and respiration. (ii) Iron is required in larger amounts in comparison to other microelements. (iii) Iron is an important component of chlorophyll. (iv) Zinc plays an important role in auxin degradation. (v) Boron is required for the uptake and utilisation of Ca2+. Which of the following statements are correct?

Read the following steps during root nodule formation and arrange these sequentially: (i) Nodules formed. (ii) Infection thread is produced. (iii) Rhizobium released into cortical cells. (iv) Root hairs curl. (v) Rhizobium colonises roots.

Which one of the following statement is wrong?

Denitrification is carried out by bacteria like:

Which element is required by all parts of a plant, particularly the meristematic tissue and the metabolically active cells?

Rod shaped bacteria present in several legumes such as Alfalfa. Sweet clover, sweet pea, lentils, clover beans, etc on roots associated with nodules:

Find out the true statement regarding absorption of minerals: (i) The movement of ions into the cell is known as influx and the movement of ions out of the cell is known as efflux. (ii) The entry of ions into outer space of the cell does not require metabolic energy, so it is considered as a passive process. (iii) The movement of ions into the innerspace of the cell requires metabolic energy, therefore it is an active process. (iv) The passive movement of ions into Apoplast usually occurs through ion channels, the transmembrane proteins that function as selective pores. (v) The entry of ions into outer space of the cell requires metabolic energy, so it is considered as active process. (vi) The movement of ions into the innerspace of the cell does not require metabolic energy, therefore it is a passive process. (vii) The active movement of ions into Symplast usually occurs through ion channels, the transmembrane proteins that function as selective pores.

Assertion: Boron is essential for sexual reproduction in flowering plants. Reason: Boron favours germination of pollen grains which is a prerequisite for sexual reproduction.

In plants growing in nitrogen deficient soils, the older leaves become chlorotic first because:

One mineral activates enzyme Catalase, other determines the osmotic potential and third one is constituent of the ring structure of chlorophyll. These minerals are respectively: