EVERYDAY SCIENCE

Detailed explanation-1: -In the C3 plants, CO2 is assimilated by condensing with RuBP by the help of RuBisCO enzyme to yield the first stable product, three carbon compund PGA. In C4 plants, CO2 is assimilated by condensing with PEP, by the help of PEPCase enzyme to yield the first stable product, four carbon compound OAA.

Detailed explanation-2: -C3 plants include around 95% of the shrubs, trees, and plants. While C4 plants are defined as the plants that use the C4 pathway during the dark reaction. The chloroplasts of these plants are dimorphic and unlike C3 plants the leaves of C4 plants possess kranz anatomy. C4 plants include around 5% of plants on earth.

Detailed explanation-3: -Answer: The Calvin cycle produces a three-carbon compound from C3 photosynthesis, whereas C4 photosynthesis produces an intermediate four-carbon compound that splits into a three-carbon compound for the Calvin cycle. Plants that use CAM photosynthesis collect sunlight during the day and fix CO2 molecules at night.

Detailed explanation-4: -Photorespiration losses are high in C3 whereas low in C4. Calvin cycle is a dark reaction which occurs in both C3 and C4 plants. C4 plants have specialized karnz anatomy of leaves. Thus, the correct answer is option B.