The brain messenger chemical plays an important role in memory. serotonin acetylcholine noradrenaline oxytocin

Correct B). Acetylcholine

The acetylcholine is an important neurotransmitter that is known to play an important role in the process of learning and memory. It is produced by the cholinergic neurons, which are found at various regions of the brain, which when stimulated release their stores of neurotransmitter.

But in order to show any effect, it is very important that they the right receptors. the muscarinic and nicotinic receptors are the right receptors that bind it

Hence, the correct answer would be option B.

answer: angiosperms

dicots

angiosperms are highly evolved plants, they produce seeds which are enclosed within in a carple. these are the largest group of plants on earth. they include trees, shrubs, herbs and small flowering plants. angiosperms exhibit a flowering stage in their life cycle. the flower serves the function of reproduction and fruit formation in majority of angiosperms. dicot is the term used to describe flowering plants that have two seed leaves. dicots are plants which develop seeds which split into two parts called cotyledons. each cotyledon contains one embryo.

here, a small purple flower development indicates that the plant belongs to angiosperms and having two embryonic leaves indicates it belongs to dicots.