Question

Which one of the following pairs of items correctly belongs to the category of organs mentioned against it?

• A. Nephridia of earthworm and malpighian tubules of cockroach - excretory organs
• B. Wings of honey bee and wings of crow - homologous organs
• C. Thorn bougainvillea and tendrils of Cucurbita - analogous organs
• D. Nictitating membrane and blind spot in human eye - vestigial organs

Answer 1

The correct option is A Nephridia of earthworm and malpighian tubules of cockroach - excretory organs

Nephridia are the excretory organs in the members of Annelida. Malpighian tubules are excretory organs in Arthropoda. The nephridia and the Malpighian tubules work like the kidneys and help in the removal and elimination of wastes. Wings of honey bee and wings of crow are analogous organs as they are made up of different components and function differently. Thorn bougainvillaea and tendril in Cucurbita are homologous organs as they are a modification of the aerial stem. The blind spot in humans and the nictitating membrane in aquatic animals are not vestigial organs. The blind spot is the area where the optic nerve leaves the eyeball. The nictitating membrane serves as an extra eyelid that protects from dust and other particles.

So, the correct answer is option A.