Consider statements about scientists: 1. Gregor Mendel is the father of genetics. 2. Edward Jenner developed the smallpox vaccine. 3. Charles Darwin proposed the cell theory. Which are correct? MCQ with Answer and Explanation

Explanation:
A lichen is a classic example of mutualism between a fungus (mycobiont) and an alga or cyanobacterium (phycobiont). The algal partner performs photosynthesis and provides organic food to the fungus. In return, the fungal partner provides a protective environment, absorbs water and minerals, and anchors the lichen to the substrate. Mycorrhiza is a mutualism between fungi and plant roots, and Rhizobium is a mutualism between bacteria and legume roots.

Explanation:
The femur (thigh bone) is the longest, heaviest, and strongest bone in the human skeleton. The stapes (stirrup) is a small bone in the middle ear and is the smallest bone in the human body. The hyoid bone is a U-shaped bone in the neck that supports the tongue; it is unique because it is not articulated (jointed) with any other bone, but is suspended by muscles and ligaments. Thus, statements 1 and 2 are correct.

Explanation:
Autotrophs produce organic compounds from inorganic CO₂ and water using light energy (photosynthesis). This exactly defines green plants. So both are true, and R explains A.