Question 3
Nagadarana and Urena fruits bear hooks. How does this disperse them?
The right answer is the one marked above.
They stick to an animal passing by and are carried away. The fruit hitches a ride on fur without paying the animal anything.
Being eaten is the route taken by fleshy fruits such as mango and papaw — a different bargain, where the animal is paid. Wind dispersal uses fibres or wings, and splitting the pericarp is the explosive mechanism.