The common nitrogen-fixer in paddy fields is
- Rhizobium
- Azospirillum
- Oscillatoria
- Frankia.
The Correct Option is B
Solution and Explanation
Top Questions on Essential Mineral Elements
Match the following
List - A List - B A. Mottled leaf I. Beets B. Heart-Rot II. Legumes C. Mouse ear III. Pecan D. Bronzing IV. Cauliflower V. Citrus - AP EAPCET - 2025
- Botany
- Essential Mineral Elements
- The correct sequence of essential elements K, Mg, Mo, P, C of the given list, which show following activities.
A) ATP synthesis
B) Component of enzymes
C) Enzyme activation
D) Turgidity maintenance- AP EAPCET - 2025
- Botany
- Essential Mineral Elements
- Dolomite is a source of
(A) Calcium
(B) Magnesium
(C) Iron
(D) Sulphur
Choose the correct answer from the options given below:- ICAR AIEEA (PG) - 2024
- Soil Science
- Essential Mineral Elements
- Which of the following conclusions was drawn from the Avery-MacLeod-McCarty experiment related to bacterial DNA?
- MHT CET - 2024
- Biology
- Essential Mineral Elements
- Match the following:
- TS EAMCET - 2024
- Botany
- Essential Mineral Elements
Questions Asked in NEET exam
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A typical unfertilized, angiosperm embryo sac at maturity is 8-nucleate and 7-celled.
Reason (R): The egg apparatus has 2 polar nuclei.In the light of the above statements, choose the correct answer from the options given below:
- NEET (UG) - 2025
- Angiosperms
- A ball of mass 0.5 kg is dropped from a height of 10 m. The ball hits the ground and rises to a height of 1.5 m. The impulse imparted to the ball during its collision with the ground is : (Take \(g = 9.8 \, \text{m/s}^2\))
- NEET (UG) - 2025
- Collision and Impulse
- Consider the diameter of a spherical object being measured with the help of a Vernier Callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least count in the M.S. is 0.1 cm and the zero of V.S. is at -0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is \(M = 5\) cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is:
- NEET (UG) - 2025
- Measurement of length
- A container has two chambers of volumes \(V_1 = 2\) litres and \(V_2 = 3\) litres separated by a partition made of a thermal insulator. The chambers contain \(n_1 = 2\) moles and \(n_2 = 3\) moles of ideal gas at pressures \(p_1 = 1\) atm and \(p_2 = 2\) atm, respectively. When the partition is removed, the mixture attains an equilibrium pressure of :
- NEET (UG) - 2025
- Ideal Gases
A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :
- NEET (UG) - 2025
- Moment Of Inertia
Concepts Used:
Essential Mineral Elements
Mineral Elements:
A large number of inorganic elements are necessary for all the life processes and hence should be taken into our diets in adequate amounts. Any deficiency in these minerals leads to an abnormality in the metabolic functioning of the body.
Essential Mineral Elements in Plants
There are two types of minerals that are essential for plant growth, such as:
1. Macrominerals
Minerals like Phosphorous, carbon, silicon, magnesium, hydrogen, sodium, nitrogen, potassium, calcium, oxygen, selenium, and sulfur are required in abundance for proper plant growth and are also found abundantly in plant tissues. Hence, they are known as macrominerals.
2. Microminerals
A few minerals like Iron, boron, zinc, cobalt, chlorine, nickel, manganese, copper, molybdenum, etc. are required in lesser quantities for proper growth by the plants and therefore, they are called microminerals. Further they are also called trace elements.