because in these plants pollen grains from an individual flower cannot fertilize its own ovules as these pollen-grains fail to germinate on stigma of the same flower. Self- sterility in plants is under genetic control which prevents the ovules being fertilized by pollen from the same plant. ...
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Answer: The period of growth before onset of sexual maturity is called juvenile phase. This phase is called vegetative phase in plants.(b) Reproductive phaseAnswer: The phase of life when an organism is capable of sexual reproduction is called reproductive phase....
reproduction definition asexual reproduction sexual reproduction reproduction in plants reproduction in animals reproduction definition “reproduction is the process of producing offspring that are biologically or genetically similar to the parent organism.” what is reproduction? reproduction is a biological ...
The magnitude of this estimate puts this life form far outside the range of most species, including most herbaceous plants8. This massive output certainly contributes to a foundational role of masting in many forest food webs55. It is expected to drive inordinate selection pressures required to ...
substrate somewhat clean. Now I keep exchanging plants with my buddy's Cichlid tank for food and they clean it overnight. There are now 4 or 5 baby's left and they are half the size of the adults and seem to be doing fine. My question is, what can I do with these extra Oto's?
The only ligand–receptor pair identified in anther development so far has been reported in both monocots and dicots:AtTPD1 (TAPETUM DETERMINANT (1):AtEMS1/EXS (EXCESS MALE SPOROCYTES 1/ EXTRA SPOROGENOUS CELLS) inA. thaliana,OsTDL1A (TPD1-LIKE 1A):OsMSP1 (MULTIPLE SPOROCYTE1) in rice,...
The process of sexual reproduction among the fungi is in many ways unique. Whereas nuclear division in other eukaryotes, such as animals, plants, and protists, involves the dissolution and re-formation of the nuclear membrane, in fungi the nuclear membrane remains intact throughout the process, ...
Imprinting is an epigenetic phenomenon in which genes are expressed selectively from either the maternal or paternal alleles. In plants, imprinted gene expression is found in a tissue called the endosperm. Imprinting is often set by a unique epigenomic configuration in which the maternal chromosomes ...