The part of the seed that provides nutrition to the developing embryo is: MCQ with Answer and Explanation

Explanation:
A food web is a network of food chains, showing multiple feeding relationships. Energy flow is unidirectional, and decomposers are integral.

Explanation:
Max Theiler developed the attenuated yellow fever vaccine (17D strain) in the 1930s, winning the Nobel Prize. Pasteur rabies, Jenner smallpox, Salk polio.

Explanation:
In the peripheral nervous system (PNS), Schwann cells wrap around axons to form the myelin sheath, which insulates axons and increases the speed of nerve impulse conduction (saltatory conduction). In the central nervous system (CNS), oligodendrocytes perform this function. Astrocytes support neurons, microglia act as immune cells. Nodes of Ranvier are gaps in the myelin sheath.