A photosynthetic carnivorous plant which feeds on insects is

Step 1: Analyze the question The question describes a plant that carries out photosynthesis (so it makes its own food) but also feeds on insects. We need the term for this mode of nutrition.

Step 2: Explain the concept Some plants grow in soils that lack nitrogen, such as bogs and marshy areas. To make up for this, they trap and digest insects to get nitrogen compounds. Examples are the pitcher plant (Nepenthes), the Venus flytrap (Dionaea), and the sundew (Drosera). These plants stay green and photosynthesize, so the insects are a supplement, not their main food source.

Step 3: Check each option

• A. Parasitic: A parasite lives on or in a host and takes nutrients from it, as with Cuscuta (dodder) or mistletoe. Insects are not hosts here, so this is wrong.
• B. Saprophytic: Saprophytes feed on dead, decaying organic matter, as mushrooms and bread mold do. This is wrong.
• C. Herbivorous: Herbivores eat plants. This is wrong.
• D. Insectivorous: This describes organisms that feed on insects. A green plant that traps and digests insects is called an insectivorous (carnivorous) plant. This is correct.

Step 4: Answer The correct option is D. insectivorous.

Exam tip: Match the "-vorous" ending to the food: insecti-vorous means insect-eating, herbi-vorous means plant-eating, and carni-vorous means flesh-eating. Remember the pitcher plant and Venus flytrap as the standard examples, because JAMB often asks about them.