Question

Study the given flow chart carefully and select the option that correctly identifies P, Q and R.

• A. R could be Dionaea which has special leaf modification to catch and digest insects.
• B. Q could be Cuscuta which is rootless photosynthetic plant.
• C. P could be any parasitic leafless plant such as Mistletoe which depends on the host plant for water and minerals.
• D. All of these

Answer 1

The correct option is A

R could be Dionaea which has special leaf modification to catch and digest insects.

According to the flowchart given:

• P could be any heterotrophic plant which follows saprophytic, holozoic or parasitic mode of nutrition. Example: Mushroom, Amoeba, Cuscuta, respectively.
• However, mistletoe is partially parasitic leafless plant which depends on host plant for water and mineral but can photosynthesise on it's own.
• Q could be any autotrophic plant that does not grow in nitrogen deficient soil but can photosynthesise on its own. Example: Cyanobacteria, Algae, Phytoplanktons, etc.
• Cuscuta is a stem parasite that cannot photosynthesise on it's own but takes readymade food from the host plant.
• R could be any autotrophic plant that grows on nitrogen deficient soil. Example: Insectivorous plants such as Dionaea, Venus flytrap, Nepenthes, etc.