Mineral Nutrition MCQ Questions & Answers in Botany

41. Which aquatic fern performs nitrogen fixation?

A Azolla

B Nostoc

C Salvia

D Salvinia

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42. Which of the following is effective against severe chest pain & the pain of bone fractures

A Asafoetida

B Reserpine

C Morphine

D Codeine

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43. A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is

A Tolypothrix

B Chlorella

C Nostoc

D Anabaena

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44. The association between blue-green algae and fungi occurs in

A lichens

B symbiosis

C cannibism

D mycorrhiza

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45. Which one of the following mineral elements plays an important role in biological nitrogen fixation

A Copper

B Manganese

C Zinc

D Molybdenum

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46. The first isolation of the very important alkaloid Reserpine was done by

A Mullers & schlittler

B Ander son

C La-condamine

D Siddiqui & siddiqui

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47. Minerals known to be required in large amounts for plant growth include :

A calcium, magnesium, manganese, copper

B potassium, phosphorus, selenium, boron

C magnesium, sulphur, iron, zinc

D phosphorus, potassium, sulphur, calcium

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

A inhibition of nitrogenase activity

B oxygen removal

C nodule differentiation

D expression of nif gene

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49. Which of the following is a nitrogen fixing organism

A Some BGA

B Rhizobium

C A and B both

D Aspergillus

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50. Which of the following is a free living aerobic nonphotosynthetic nitrogen-fixer?

A Rhizobium

B Azotobacter

C Azospirillum

D Nostoc

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41. Which aquatic fern performs nitrogen fixation?

42. Which of the following is effective against severe chest pain & the pain of bone fractures

43. A free living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is

44. The association between blue-green algae and fungi occurs in

45. Which one of the following mineral elements plays an important role in biological nitrogen fixation

46. The first isolation of the very important alkaloid Reserpine was done by

47. Minerals known to be required in large amounts for plant growth include :

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

49. Which of the following is a nitrogen fixing organism

50. Which of the following is a free living aerobic nonphotosynthetic nitrogen-fixer?

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