Mineral Nutrition Easy Questions and Answers

The function of leg haemoglobin in the root nodules of legumes is :

Leghaemoglobin is the haemoglobin like red pigment found in root nodules of legumes and reported to function as an oxygen-carrying pigment in symbiotic nitrogen fixation.

Correct Option: B

Leghaemoglobin is the haemoglobin like red pigment found in root nodules of legumes and reported to function as an oxygen-carrying pigment in symbiotic nitrogen fixation.

Which of the following can fix atmospheric nitrogen?

Anabaena is a nitrogen fixing blue-green alga composed of barrel-shaped cells held in a gelatinous matrix. So it can fix atmospheric nitrogen.

Correct Option: D

Anabaena is a nitrogen fixing blue-green alga composed of barrel-shaped cells held in a gelatinous matrix. So it can fix atmospheric nitrogen.

A prokaryotic autotrophic nitrogen fixing symboint is found in :

A prokaryotic autotrophic nitrogen fixing symbiont is found in Cycas.

Correct Option: B

A prokaryotic autotrophic nitrogen fixing symbiont is found in Cycas.

For its action, nitrogenase requires

Nitrogenases are the enzymes used by some organisms to fix atmospheric nitrogen gas. It is the only known family of enzymes that accomplish this process. Nitrogenase requires high input of energy & anaerobic condition.

Correct Option: C

Read the following four statements (A-D).
(A) Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane.
(B) In dicot stems, a new cambium originates from cells of pericycle at the time of secondary growth.
(C) Stamens in flowers of Gloriosa and Petunia are polyandrous.
(D) Symbiotic nitrogen-fixers occur in freeliving state also in soil. How many of the above statements are correct?

All the four statements are correct.

Correct Option: C

All the four statements are correct.