Julius Von Sachs
Which of the following is not related?
1. A prominent German Botanist
2. In 1860, he demonstrated for the first time that plants could be grown to maturity in a defined nutrient solution in complete absence of soil
3. The technique, Hydroponics
4. Categorized the essential and non Essential mineral nutrition.
Hydroponics can be used in
(1) Identification of essential elements
(2) In discovery of deficiency symptoms of essential elements
(3) For commercial production of vegetables
(4) All of these
Hydroponics cannot be used in the commercial production of vegetables such as
(1) Tomato
(2) Seedless cucumber
(3) Lettuce
(4) Pomegranate
Which of the following is the essential requirement of Hydroponics?
(1) Aeration to obtain the optimum growth
(2) Lage vessel
(3) Broader neck
(4) Cotton plugs for funnel adjustment
How many elements are found in plants?
(1) 105
(2) 35
(3) 44
(4) More than 60
Which of the following statements is wrong?
(1) There are techniques that are able to detect the minerals even at a very low concentration i.e. 10 mg/mL
(2) Some plant species accumulate selenium and some others gold
(3) Some plant species nuclear test sites take up radioactive Strontium
(4) The criteria for essentiality of an element completely depends upon the amount of element
The elements are classified into Macronutrients and Micronutrients based on their
(1) Qualitative properties
(2) Structural properties
(3) Quantitative requirements
(4) Both B and C
Micronutrients are found in
(1) More than 10mmole per Kg of dry matter
(2) Less than 10mmole per Kg of dry matter
(3) Around 1mmole per Kg of dry matter
(4) Less than 1mmole per Kg of dry matter
The total essential elements for plant are
(1) 20
(2) 17
(3) 24
(4) 15
The beneficial elements are
(1) Required by higher plants
(2) Na,Si,Co,Se
(3) Other than 17 essential elements
(4) All of these