Question

Bombyx mori lays its egg on the leaves of the tree _____________.
A. Ficus religiosa
B. Morus alba
C. Dalbergia sissoo
D. Mangifera indica

Answer 1

Hint: Bombyx mori is known as silkworm. It is an insect from the moth's own family Bombycidae. It is the nearest relative of Bombyx mandarina, the wild silk moth. The silkworm is the larva or caterpillar of a silk moth. It is an economically vital insect, being a number one manufacturer of silk. They may eat other mulberry species or even the osage orange.

Complete answer: Eggs take approximately 14 days to hatch into larvae, which eat constantly. They have a desire for white mulberry, having an enchantment to the mulberry odorant cis-jasmone.
They aren't monophagous, because they are able to eat other species of Morus, as well as a few different Moraceae, on the whole, Osage orange. They are blanketed with tiny black hairs. When the shade of their heads turns darker, it indicates they're approximate to moult. After moulting, the larval phase of the silkworms emerge white, naked, and with little horns on their backs. After they have moulted four instances, their bodies come to be barely yellow, and the skin turns tighter. The larvae then put together to go into the pupal segment in their lifecycle, and enclose themselves in a cocoon made of uncooked silk produced by way of the salivary glands. Some might also emerge with the capability to raise off and live airborne, however, sustained flight can't be finished. This is due to the fact their bodies are too big and heavy for his or her small wings. Silk moths have a wingspan of three-five cm (1.2–2.0 in) and a white, furry frame. Females are approximately two to 3 times bulkier than males.
Hence, Option (B) is the correct answer.

Note: Morus alba is the scientific name of white mulberry, the principal businesses of silkworms fall underneath the univoltine. Due to silk's small size and ease of culture, the silkworm has ended up a model organism inside the look of lepidopteran and arthropod biology. Its flowering occurs usually in April month.