Home
Class 12
BIOLOGY
Assertion : Iron is a microelement Re...

Assertion : Iron is a microelement
Reason : Microelements are required in traces only, less than 1 mg/gm of dry matter

A

Both Assertion and Reason are true and Reason is the correct explanation of assertion

B

Both assertion and Reason are true, but reason is not the correct explanation of assertion

C

Assertion is true, but reason is false

D

Assertion is false, but reason is true

Text Solution

Verified by Experts

The correct Answer is:
A
Microelements are essential elements, which are requird by plants in traces only, less than 1 mg/gm of drymatter, e.g., iron, zinc, copper, etc.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MINERAL NUTRITION

    ARIHANT NEET|Exercise Chapter Exercises (C) Medical Entrances gallery (Collection of questions asked in NEET & Various Medical Entrance Exams)|70 Videos

  • MINERAL NUTRITION

    ARIHANT NEET|Exercise Chapter Exercises (B) Taking it together (Medical entrances special format questions) Statement Based questions|9 Videos

  • MICROBES IN HUMAN WELFARE

    ARIHANT NEET|Exercise Chapter exercises C ( Medical entrances gallery )|28 Videos

  • MONERA

    ARIHANT NEET|Exercise Chapter exercises Medical entrances gallery (Collection of questions asked in NEET & various medical entrance exams)|47 Videos

Similar Questions

Explore conceptually related problems

The essential element present in plant tissues in amount of more than 10m mole kg^(-1) of dry matter is :

The amount of carbon dioxide required for the production of 3 gms of dry organic matter is

Knowledge Check

  • Assertion : Iron nails sink in water. Reason : Iron nails are more dense than water.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion is false and reason is true

  • Which of the following essential elements is required by plants in amount less than 10 m mole Kg–1 of dry matter ?

    A
    Manganese
    B
    Magnesium
    C
    Phosphorus
    D
    Potassium

  • Micronutrients are present in plant tissues in concentrations less than ____of dry matter.

    A
    1 m mole `Kg^(-1)`
    B
    10 m mole `Kg^(-1)`
    C
    0.1 m mole `Kg^(-1)`
    D
    2 m mole `Kg^(-1)`

    • Similar Questions

    Explore conceptually related problems

    Assertion :- Boron is one of the essential micro element or trace element. Reason:- Boron is needed in small amount between 10 to 100 m mole kg-1 of dry matter.

    Assertion : Resistance of an ammeter is less than the resistance of a milliammeter. Reason : Value of shunt required in case of ammeter is more than a milliammeter.

    Assertion : Wrought iron is more malleable and ductile than steel. Reason : It contains slightly less percentage of carbon.

    Assertion : Wrought iron is more malleable and ductile than steel. Reason : It contains slightly less percentage of carbon.

    Assertion : Ethane is much less reactive than ethene. Reason : Bond angles in ethane are less than those in ethene.

    Home
    Profile