is the preservation of all cellular and structural elements in as nearly the natural living condition as possible. Two commonly used solutions in plants for this purpose are and .

Cryopreservation

Plant Vitrification Solution 2 (PVS2)  and  Plant Vitrification Solution 3 (PVS3)

Explanation:

Cryo-preservation or cryo-conservation is defined as the process of preservation of all cellular and structural elements such as cells, organelles, tissues, organs, or any other biological constructs by cooling to very low temperatures.

Two commonly used solutions in plants for this purpose are Plant Vitrification Solution 2 (PVS2)  and  Plant Vitrification Solution 3 (PVS3). Plant Vitrification Solution 2 (PVS2) is consists of, w/v, 0.4 M sucrose, 30% glycerol, 15% DMSO and  15% ethylene glycol and Plant Vitrification Solution 3 (PVS3) comprising, w/v, 50% sucrose and 50% glycerol.

Hence, the correct answer is "Cryopreservation

Plant Vitrification Solution 2 (PVS2)  and  Plant Vitrification Solution 3 (PVS3) "

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.