The part of the seed that emerges first during germination and develops into the root is the: MCQ with Answer and Explanation

Explanation:
Darwin's finches on the Galapagos Islands evolved diverse beak shapes from a common ancestor to adapt to different food sources, a classic example of adaptive radiation. Industrial melanism in the peppered moth demonstrates natural selection, where darker moths survived better in soot-covered environments. Homologous organs indicate divergent evolution from a common ancestor, whereas analogous organs indicate convergent evolution. Thus, statements 1 and 2 are correct.

Explanation:
Mature mammalian red blood cells (erythrocytes) are enucleated to maximize space for hemoglobin. Platelets (thrombocytes) are cell fragments crucial for the blood coagulation cascade. Blood plasma, the liquid component, constitutes about 55% of total blood volume, while the formed elements (RBCs, WBCs, platelets) make up the remaining 45%. Thus, statements 1 and 2 are correct.

Explanation:
The tricuspid valve has three cusps and prevents backflow of blood from the right ventricle to the right atrium during contraction. The mitral (bicuspid) valve is on the left side. Semilunar valves are at the ventricular outlets.