Lathyrism is caused by

• dal

• moth dal

• khesari dal

• Glycine

The enzyme responsible for atmospheric nitrogen fixation is

• nitrogenase

• hydrogenase

• oxygenase

• carboxylase

Insects captured by insectivorous plants fulfil their requirements of

• enzymes

• oxygen

• nitrogen

• water

The deficiencies of micro-nutrients, not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport ?

• Cu, Mn, Fe

• Co, Ni, Mo

• Mn, Co, Ca

• Ca, K, Na

135.

The non- photosynthetic, non- symbiotic N₂ fixing bacteria are

• Rhodobacter

• Spirillum

• Azotobacter

• All of these

Which of the following element plays an important role in nitrogen fixation

• Zinc

• Molybdenum

• Manganese

• Copper

Which one of the following elements is almost non-essential for plants?

• Ca

• Mo

• Zn

• Na

Which of the following genera is associated with coralloid roots?

• Cycas

• Taxus

• Pinus

• Sequoia

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: 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.