Which plant tissue is responsible for the transport of organic nutrients? MCQ with Answer and Explanation

Explanation:
Archaeopteryx is a famous fossil that exhibits characteristics of both reptiles and birds, making it a classic connecting link. It had reptilian features like teeth, a long bony tail, and clawed fingers, but also avian features like feathers, wings, and a bird-like beak. It provides strong evidence for the evolutionary theory that birds evolved from theropod dinosaurs.

Explanation:
A synapse is a junction between two neurons (or neuron and effector) where neurotransmitters are released to propagate the signal.

Explanation:
Poliovirus attacks motor neurons in the spinal cord and brainstem, causing paralysis. It spreads via the fecal-oral route. Vaccination (IPV/OPV) has almost eradicated it globally. The virus replicates in the intestine and then invades the nervous system. Polio survivors may suffer post-polio syndrome later.