A farmer adds Azotobacter culture to soil before sowing maize. Which mineral element is being replenished?

1

(a)

Nitrogen

Name the macronutrient which is component of all organic compounds, but is not obtained from soil.

1

(a)

Carbon.

Name the plant that accumulates silicon.

1

(a)

Equisetum(Horsetails)

Yellowish edges appear in leaves deficient in.

1

(a)

Magnesium

Name an insectivorous angiosperm

1

(a)

Nepenthes