The rough endoplasmic reticulum (versus the smooth), which is where the ribosomes are and make proteins.
How day length affects crop production most plant donot grow when day length is less than 10 hours . Even if the temperature is kept within the optimum range _ For example in a climate _ controlled greenhouse _ most plant will just sit dormat until the magic 10 hours of light perday arrives
Four egg cells are produced in meiosis but only one will actually be used.
