Eucalyptus, Acacia, Polar, etc are some of the most commonly used tree species in social forestry. This is because Eucalyptus helps meet increasing wood demands from dwindling natural forests, supplying local communities and industry alike. Euca lyptus first became a component of India’s social forestry program in the 1970s. With financial assistance from the World Bank, large tracts of forest lands, farms, and degraded land in the Indian states of Karnataka, Gujarat, Uttar Pradesh, Punjab and Haryana were planted with eucalyptus.

Correct Option: C

Eucalyptus, Acacia, Polar, etc are some of the most commonly used tree species in social forestry. This is because Eucalyptus helps meet increasing wood demands from dwindling natural forests, supplying local communities and industry alike. Euca lyptus first became a component of India’s social forestry program in the 1970s. With financial assistance from the World Bank, large tracts of forest lands, farms, and degraded land in the Indian states of Karnataka, Gujarat, Uttar Pradesh, Punjab and Haryana were planted with eucalyptus.

Water hyacinth (Eichhornia crassipes) is used for purifying not only domestic wastewater but also industrial wastewater. It can readily absorb, accumulate and concentrate heavy metals such as lead, cadmium, mercury and nickel. Other studies have evaluated the potential of water hyacinth to absorb various organic chemicals like phenols and toxaphene. Water hyacinth can remove even radioactive metals from industrial effluents, which is very difficult otherwise.

Correct Option: C

Water hyacinth (Eichhornia crassipes) is used for purifying not only domestic wastewater but also industrial wastewater. It can readily absorb, accumulate and concentrate heavy metals such as lead, cadmium, mercury and nickel. Other studies have evaluated the potential of water hyacinth to absorb various organic chemicals like phenols and toxaphene. Water hyacinth can remove even radioactive metals from industrial effluents, which is very difficult otherwise.

Sexual reproduction in Aspergillus is rare and takes place in favourable conditions. Sex organs are produced on the same mycelium which has produced conidia. Male organs are called Antheridium or Pollinoduim and female are called archicarp or Ascogonium. Female organs develop as a branch of hypha. The antheridium curves round and bend towards the apex of archicarp as a result of which they become spirally coiled and their tips get fused.

Correct Option: D

Sexual reproduction in Aspergillus is rare and takes place in favourable conditions. Sex organs are produced on the same mycelium which has produced conidia. Male organs are called Antheridium or Pollinoduim and female are called archicarp or Ascogonium. Female organs develop as a branch of hypha. The antheridium curves round and bend towards the apex of archicarp as a result of which they become spirally coiled and their tips get fused.

Silkworms are the larva of a moth (Bombyx mori) native to Asia that spins a cocoon of fine, strong, lustrous fiber that is the source of commercial silk.Silkworms feed on the leaves of the mulberries (genus Morus) and sometimes on the Osage orange (Maclura pomifera).

Correct Option: D

Silkworms are the larva of a moth (Bombyx mori) native to Asia that spins a cocoon of fine, strong, lustrous fiber that is the source of commercial silk.Silkworms feed on the leaves of the mulberries (genus Morus) and sometimes on the Osage orange (Maclura pomifera).

Global Warming is the increase of Earth’s average surface temperature due to effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth. It will lead to increase in sea level due to melting of polar ice, desertification leading to changes in crop patters, change in coastal line due to their submergence.

Correct Option: D

Global Warming is the increase of Earth’s average surface temperature due to effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth. It will lead to increase in sea level due to melting of polar ice, desertification leading to changes in crop patters, change in coastal line due to their submergence.