Amoebiasis is caused by which protozoan? MCQ with Answer and Explanation

Explanation:
Apical meristems at root and shoot tips contribute to primary growth (increase in length). Intercalary meristems, located at nodes and leaf bases, also aid in elongation, especially in grasses. Lateral meristems (vascular cambium, cork cambium) cause secondary growth (increase in girth). So both apical and intercalary meristems are responsible for length increase.

Explanation:
The nucleolus is a dense spherical structure within the nucleus where ribosomal RNA (rRNA) is transcribed and ribosomal subunits are assembled. They then exit to the cytoplasm. The cytoplasm is the site of translation. Mitochondria have their own 70S ribosomes but their rRNA is synthesized within the organelle. Golgi modifies proteins.

Explanation:
Multiple Ovulation Embryo Transfer (MOET) is a reproductive technology used in cattle to rapidly multiply the offspring of superior females. Artificial insemination (AI) allows farmers to use semen from genetically superior bulls without keeping the animal, improving herd quality. Crossbreeding involves mating animals of different breeds to combine desirable traits and increase heterozygosity, thereby increasing, not reducing, genetic diversity in the population. Thus, statements 1 and 2 are correct.