Questions

Papayas are yellow due to the presence of carotene and xanthophyll pigments i.e, Caricaxanthin present in the chromoplasts of the fruit pulp.

The coloration of the different tissues in plants is due to the plastids which are present in the cells. Leucoplasts are white in colour, chloroplasts are green in colour and chromoplasts are of various colours. These plastids can take any colour at different time. Therefore, green fruits ( chloroplasts) turn colurful (chromoplasts) at maturity.

Nostoc is a prokaryote. Prokaryotic cells lack membrane bound organelles and well organized nucleus, that is nuclear envelope is absent in these cells.

The nuclear envelope, also known as the nuclear membrane, a bilayer membranes which surrounds the nucleus, and in eukaryotic cells it encases the genetic material.

India unveiled the third National Wildlife Action Plan for 2017-2031. The plan was unveiled by environment minister Dr Harsh Vardhan on the inaugural day of the Global Wildlife Programme (GWP) conference The third National Wildlife Action Plan is unique as this is the first time India has recognised the concerns relating to climate change impact on wildlife and stressed on integrating actions that need to be taken for its mitigation and adaptation into wildlife management planning processes. The plan adopts a “landscape approach”in conservation of all wildlife.The government has also underlined an increased role of private sector in wildlife conservation. The plan has 5 components, 17 themes, 103 conservation actions and 250 projects.

All   are   correct   except   4   as   a cloudburst  can  occur  anytime  and at  any  place  which  is  affected  by convective weather system.

North sea is the largest fishing ground while the North-West pacific is the greatest region