Bombyx mori is the domesticated silkworm, whose caterpillar spins a silk cocoon. The silk thread is obtained by boiling cocoons. Apis mellifera is the honeybee, Labeo rohita is a fish (rohu), Drosophila is fruit fly used in genetics. Sericulture involves mulberry cultivation, silkworm rearing, and reeling of silk. India is the second largest silk producer.
Explanation:
The pulmonary artery (trunk) exits the right ventricle and carries deoxygenated blood to the lungs for oxygenation. The pulmonary veins return oxygenated blood from the lungs to the left atrium. The aorta distributes oxygenated blood to the body, and the vena cava returns deoxygenated blood to the heart.
Explanation:
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.
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