Which cytoplasmic organelles contain hereditary material and can undergo replication? a chloroplasts and cell walls b cell membranes and ribosomes c endoplasmic reticulum and food vacuoles d mitochondria and chloroplasts

The correct answer is option D, that is, mitochondria and chloroplasts.  

Mitochondria and chloroplasts are the two organelles witnessed in the eukaryotic cells. The majority of eukaryotic cells exhibit mitochondria, while chloroplasts are only found in plants.  

Apart from the nucleus, mitochondria and chloroplasts are the only organelles that comprise their own genetic material. They both possess their own DNA, and therefore, both the organelles utilize their own DNA to generate various enzymes and proteins needed for their normal functioning.  

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.