Who proposed the Cell Theory? MCQ with Answer and Explanation

Explanation:
A simple fruit develops from a single ovary of a single flower, which may be a single carpel or fused carpels (e.g., tomato, peach). Aggregate fruits develop from separate carpels of one flower (e.g., strawberry). Multiple fruits from many flowers (e.g., pineapple).

Explanation:
Hemoglobin in red blood cells binds oxygen in the lungs and releases it in tissues. Each hemoglobin molecule can bind four O₂ molecules. It also carries some CO₂.

Explanation:
Euglenoids are unicellular eukaryotic organisms that possess characteristics of both plants (chloroplasts for photosynthesis) and animals (lack of a cell wall and presence of a flagellum for movement). Due to their unique features and unicellular nature, they are classified under the Kingdom Protista.