Do the second heads on cherubi have consciousness like the rest of the cherubi? Why did cherubi evolve to have two heads?

Regarding your first question, not really. It reacts to stimuli (light, heat, pain, and so forth), but it’s not capable of independent thought beyond that.

As for why it evolved, the going theory is that it’s actually a store for nutrients, but the way a cherubi’s body is structured (which is ideal for hanging from branches but not so ideal from keeping this store away from predators) required it to develop a means of protection. A rudimentary pseudobrain just happens to be a rather effective warning system for a main body. (See also: girafarig.)

Would you please write about Cherrim? A very underrated pokemon in my opinion. It’s so cute!

My editor would agree with you concerning the aesthetic qualities of the cherubi line, but it is indeed true that both pokémon are criminally underrated.

Cherubi
The Cherry Pokémon
Type: Grass
Official Registration #: 420
Entry: A small, cherry-like pokémon originally discovered in the forests of Sinnoh. Unlike many other pokémon, cherubi’s second head does not contain a brain. Rather, it contains supplemental nutrients it needs to grow. Once depleted, this second body shrivels up and may be plucked to aid in its preparations for evolution. (The ball will otherwise fall off on its own.) Meanwhile, like many grass-types, cherubi is edible, and the ball is sometimes gathered and cooked once lost. However, it should be noted that this ball must be fully cooked and eaten in small doses at that. It is a coincidence that this is pokémon #420, but it’s a very apt coincidence.

Cherrim
The Blossom Pokémon
Type: Grass
Official Registration #: 421
Entry: The evolved form of cherubi, by battle experience. For much of its life, cherrim will hide within its dense, dark violet petals to conserve energy. However, when exposed to bright sunlight, cherrim will open its blossom and become more energetic, outgoing, and otherwise joyful, and thus, even in its closed, overcast form, it is strongly inclined to seek out the outdoors, especially during sunny weather. For this reason, it is one of the few pokémon the author and presumably many others in his social media network will never be able to identify with.