What is Thuringioside?

Thorn of $Bougainvillea$ and tendril of $Cucurbita$ are examples of

Two bodies of masses $m$ and $4m$ are placed at a distance $r$. The gravitational potential at a point on the line joining them,where the gravitational field is zero,is

Floral formula of Cruciferae (Brassicaceae) is$-$

Diffusion current in a $p$-$n$ junction is greater than the drift current in magnitude when:

Which of the following has the largest population in a food chain?