Welcome to brainly
singular= granum or the plural is grana.
Darwin's plans to find out about simulated choice by examining pigeons is that he needed to learn whether you can change the entire species taking after that particular pigeon into another type of pigeons. I hope the answer will help you.
The question is not complete, but luckily I could sneak the options.
The answer would be stomata allow plants to obtain certain minerals from the ground.
