Consider statements about vitamins: 1. Vitamin A is stored in the liver. 2. Vitamin B complex is water-soluble. 3. Excess Vitamin D is easily excreted. Which are correct? MCQ with Answer and Explanation

Explanation:
Homologous organs share a common ancestral origin and structural plan but may have different functions (e.g., human arm, whale flipper, bat wing). This indicates divergent evolution. Analogous organs have different origins but similar functions (e.g., wings of birds and insects) due to convergent evolution. Vestigial organs are reduced and non-functional, like the human appendix.

Explanation:
Chloroplasts are the sites of photosynthesis in plant cells, converting solar energy into chemical energy (food). Hence they are called the kitchen of the cell. Mitochondria are the powerhouse, generating ATP; ribosomes are protein factories; Golgi apparatus is the packaging center.

Explanation:
Genetic drift is the random fluctuation of allele frequencies in a population, particularly significant in small populations, due to chance events. Gene flow (migration) is the transfer of alleles from one population to another through the movement of individuals or gametes. Natural selection is a non-random, deterministic process where individuals with traits better suited to their environment have higher survival and reproductive success. Thus, statements 1 and 2 are correct.