Triticale is the first man-made cereal crop. Mention the type of hybridisation through which it was produced.

Virus free plants can be generated through-

Silkworm silk is the product of

Biodiversity loss occurs due to the reasons given below

$(i)$ Habitat loss and fragmentation

$(ii)$ Co-extinction

$(iii)$ Over-exploitation

$(iv)$ Alien species invasion

Identify the correct reasons

Assertion : Fish meal is a rich source of protein for cattle and poultry.

Reason : Fish meal is produced from non-edible parts of fishes like fins, tail etc.