HORTICULTURE

Detailed explanation-1: -Option e) endoplasmic reticulum is the correct answer. The cell wall, plasma membrane, and ribosomes can be found in prokaryotes but endoplasmic reticulum is absent.

Detailed explanation-2: -Which of the following is not a characteristic of prokaryotes? Explanation: Prokaryotes do not have membrane-bound organelles, such as the nucleus or mitochondria.

Detailed explanation-3: -Centrosomes are present in animal cells and absent in plant cells. Hence the absence of the centrosome is the only characteristic of the plant cell.

Detailed explanation-4: -They are small in size 0.1 mm to 10 mm. They do not possess membrane-bound organelles. They have single circular DNA as genetic material and plasmid. They possess mesosomes for respiration. Some are autotrophic and some are saprotrophic.