Asexual reproduction is the primary form of reproduction for single-celled organisms such as the archaebacteria, eubacteria, and protists.
reciprocate. 1  to give, feel, etc., in return. 2  to give and receive reciprocally; interchange: to reciprocate favors. 3  to cause to move alternately backward and forward. 4  to make a return, as for something given. 5  to make interchange. 6  to be correspondent. 7  to move alternately backward and forward.
[e-moÂ´shun] a state of arousal characterized by alteration of feeling tone and by physiologic behavioral changes. The external manifestation of emotion is called affect; a pervasive and sustained emotional state, mood. adj., adj emoÂ´tional. The physical form of emotion may be outward and evident to others, as in crying, laughing, blushing, or a variety of facial expressions.