Mineral nutrition practice · Mixed difficulty

Which of the given options are correct for hydroponics? Select the correct pair
I. Hydroponics technique is useful in areas having infertile and dry soils
II. Hydroponics can regulate pH optimum for a particular crop
III. It increases the labour cost
IV. It increases the problem of weeding

During biological nitrogen fixation, inactivation of nitrogenase by oxygen poisoning prevented by:

Insectivorous plants eats the insect for

Quantity of macronutrients that is generally found in plant is

Which of the following is considered to be the best chemical method of fixing atmospheric nitrogen?

For the proper management of diseased conditions in hydroponics, it is important to

Hydroponics help for

Some elements like calcium are not remobilised because they are

Select the mismatched pair.

Pick Out from the following list the two minerals which are not needed by plants (Majority) but needed by animals.

The enzyme nitrogenase is highly sensitive to the molecular oxygen as it requires anaerobic condition. In nodule anaerobic condition is provided by

Which of the following statements are correct?

i) Magnesium competes with iron and manganese for uptake and with iron for binding with enzymes

ii) Magnesium inhibit calcium translocation in shoot apex

iii) Excess of manganese may induce deficiencies of iron, magnesium and calcium

iv) Symptoms of manganese toxicity may actually be the deficiency symptoms of iron, magnesium and calcium.

Which of the following are reservoirs for phosphorus and nitrogen cycle respectively?

Which of the following nutrient is required for pollen germination ?

When a plant undergoes senescence, the nutrients may be?

‘mottled chlorosis’ on the leaves occurs due to the deficiency of

The function of leghaemoglobin in the root nodules of legumes is

$C,H,O$ and $N$ are called structural elements?

Which two important amides found in the plants are structural part of proteins

The most important role of $\mathrm{k}^{+}$ions is that

Name the essential element that is considered as the component of energy related to chemical compound like chlorophyll

Which of the following are considered as the roles of iron (Fe) in plants?
I. Important constituent of cytochrome
II. Activator of catalase
III. Essential for chlorophyll synthesis
Choose the correct option

Nitrogen is mainly absorbed in the form of

Which of the following statements are correct about mineral absorption in plants?

The full form of CEA is

Hydroponics are of three types …A…, a film system and …B…
Choose the correct pair from the option given below

The major role of minor elements inside living organisms is to act as

Bacteria and fungi developing on dead decaying organisms are

Read the functions given below and identify the concerned nutrient
I. Activator of catalase
II. Important constituent of cytochrome
III. Important constituent of proteins involved in ETS
IV. Essential for chlorophyll synthesis

The technique of growing plants in a nutrient solution in the complete absence of soil is called