Biology : Mineral Nutrition

Assertion: Soil particles, particularly clay and organic matter in soil, contain negative charges that attract positively-charged ions such as Ca²⁺, K⁺ and Mg²⁺.

Reason: Essential elements derived from soil are termed as mineral elements while those derived from air or water are known as nonmineral elements.

• If both assertion and reason are true and 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 are false.

Assertion : Atmospheric nitrogen gas is always fixed by nitrogen-fixing micro-organisms.

Reason : Decomposers release nitrogen gas from dead bodies of plants and animals.

• If both assertion and reason are true and 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 are false

Apiculture is associated with which of the following groups of plants

• Grapes, maize, potato

• Sugarcane, paddy, banana

• Guava, sunflower, strawberry

• Pineapple, sugarcane, strawberry

Leghaemoglobin is produced in response to

• respiration

• photosynthesis

• fatty acid synthesis

• N₂ fixation

Assertion : Cattles feed on leaves of maize to get nutrition for growth and development.

Reason: A number of symbiotic bacteria are present in rumen of cattle.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are hue but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Animals take phosphorus from

• water

• plants

• rock

• soil

In the given diagram A and B represent

• A	B
  Mineralisation	Demineralisation

• A	B
  Ammonification	Denitrification

• A	B
  Denitrification	Ammonification

• A	B
  Denitrification	Mineralisation

Which of the following sugars is not plants?

• sucrose

• glucose

• lactose

• fructose

Which one of the following is not a microelement for plants?

• Cu

• B

• Zn

• Cr

Which of the following is correct set of micronutrient for plants?

• Mg, Si, Fe, Cu, Ca

• Cu, Fe, Zn, B, Mn

• Mg, Fe, Zn, B, Mn

• Mo, Zn, Cl, Mg, Ca