Definition noun A form of apomixis where the embryo arises from an unfertilized egg within a diploid embryo sac formed without completing meiosis. Supplement Apomixis in flowering plants exists in two forms: gametophytic apomixis adventitious embryony See also: asexual reproduction, meiosis..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..
Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
