Assertion: Nitrogen is one of the most essential elements of human body.
Reason: All types of prokaryotic organisms are able to fix nitrogen.
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.
C.
If assertion is true but reason is false.
Nitrogen is one of the most essential elements of human body. It is a constituent of a number of organic compounds like amino acids, proteins, nucleotides, nucleic acids, many vitamins, hormones etc. Biological N2 fixation is a very important natural process which is performed by two types of prokaryotes - bacteria and cyanobacteria. They include both free living and symbiotic forms.
Which of the following element plays an important role in nitrogen fixation
Zinc
Molybdenum
Manganese
Copper
Which of the following is a group of micronutrients for plants?
Fe, Mn, Cu, Mo, Zn
Fe, Mn, Cu, O, C
Cu, B, Cl, Fe, Ca
Ca, Mg, Fe
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.
