MCQ
Assertion (A) : Plants and animals can utilize atmospheric nitrogen.
Reason (R) : Atmosphere is a rich source of nitrogen.
  • 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
  • If assertion is false but reason is true.

Answer

Correct option: D.
If assertion is false but reason is true.
(d) Assertion is false but reason is true Assertion (A) : Plants and animals cannot utilise atmospheric nitrogen.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Assertion (A): Group 2 elements in the modem periodic table are called alkaline earth metals. Reason (R): The oxides of group 2 elements produce alkaline solutions when they are dissolved in water.
Assertion (A) : Heat energy is transferred from one body to another due to a
temperature difference between them.
Reason (R) : Heating a substance causes a rise in temperature.
(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 but reason is true.
Assertion: Materials are exchanged between epithelial and connective tissues by diffusion.
Reason: Blood vessels are absent in epithelial tissue.(a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
(b) Both Assertion and Reason are true that Reason is not the correct explanation of Assertion.
(c) Assertion is true but Reason is false.
(d) Both Assertion and Reason are false.
Assertion (A) : The Arthropods have an open circulatory system. .
Reason (R) : The cells and tissues are bathed in blood.
(a) A is right and R is wrong.
(b) A is the wrong R is right.
(c) A and R are wrong.
(d) A is right R explains A
Assertion: Non-striated muscles are said to be voluntary in nature. Reason: Non-striated muscles are under the control of our will.
Assertion (A) : Metals like iron are electroplated with chromium. Reason (R) : Electroplating is done to protect chromium from rusting.
Assertion (A): PVC is an unsafe plastic.
Reason (R)Burning PVC releases dioxins, a most toxic chemical.
Assertion : Human beings Cannot hear infrasonic sound.
Reason : Sound with frequency less than 20 Hz is called infrasonic sound.  
Assertion: Haemoglobin contains iron.

Reason: Iron deficiency leads to anaemia

  • If both Assertion and Reason are true and the Reason is the correct explanation of Assertion

  • If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

  • If Assertion is true but Reason is false

  • If both Assertion and Reason is false

Assertion (A) : The loss of excess water from the aerial parts of the plant in the form of water vapour is known as transpiration. Reason (R) : Stomata of the leaf perform transpiration.