The molecule that carries the genetic code from the nucleus to the cytoplasm is:
A. DNA
B. rRNA
C. tRNA
D. mRNA
Answer: Option D
Solution (By JKExamLibrary)
Messenger RNA (mRNA) is transcribed from DNA in the nucleus and carries the codon sequence to ribosomes in the cytoplasm for translation into protein. tRNA brings amino acids, rRNA forms ribosomes, DNA stays in the nucleus. mRNA is the template for protein synthesis.
Explanation:
Taxonomy is the branch of science concerned with the classification, identification, and naming of organisms. It involves arranging organisms into hierarchical categories based on their shared characteristics and evolutionary relationships. The study of tissues is Histology, and the study of fossils is Paleontology.
Explanation:
Guttation is the exudation of water droplets containing dissolved minerals from hydathodes at leaf margins, driven by root pressure when transpiration is low. Transpiration is vapor loss, bleeding is sap from cut tissue.
Consider statements about environment: 1. The Montreal Protocol addresses ozone depletion. 2. The Kyoto Protocol addresses greenhouse gas emissions. 3. The Ramsar Convention addresses wetland conservation. Which are correct?
Explanation:
The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of substances like CFCs. The Kyoto Protocol is an international agreement linked to the UNFCCC, committing state parties to reduce greenhouse gas emissions to combat global warming. The Ramsar Convention is the international treaty for the conservation and sustainable use of wetlands, recognizing their ecological importance. All statements are correct.
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