The element that is a component of the vitamin B₁₂ molecule is: MCQ with Answer and Explanation

Explanation:
The correct hierarchical classification of organisms, from the broadest to the most specific category, is: Kingdom, Phylum (or Division for plants), Class, Order, Family, Genus, and Species. A helpful mnemonic to remember this is: 'King Philip Came Over For Good Spaghetti'.

Explanation:
Cross-pollination between different plants promotes genetic diversity. Self-pollination does not need external agents; entomophily is by insects, hydrophily by water, anemophily by wind.

Explanation:
The cerebellum, meaning 'little brain', is a highly folded structure located at the posterior base of the skull, beneath the occipital lobes of the cerebrum and behind the brainstem. While it does not initiate movement, its primary functions are to coordinate voluntary motor movements, ensure muscle synergy, maintain posture, and regulate balance and equilibrium. It receives sensory input from the spinal cord, vestibular system, and cerebral cortex, and fine-tunes motor output to ensure smooth, accurate movements. Damage to the cerebellum results in ataxia (clumsy, uncoordinated movements).