Q. Study the four statements (I-IV) given below and select the two correct ones out of them I. A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers. II. Predator star fish Pisasterhelps in maintaining species diversity of some invertebrates. III. Predators ultimately lead to the extinction of prey species. IV. Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders.
A) II and III
B) III and IV
C) I and IV
D) I and II
Explanation
Both lion (carnivore) and sparrow (herbivore) are consumers. The Asteroidea occupy several important roles throughout ecology and biology. Sea stars, such as Ochre star (Pisarterochraceus) have become widely known as the example of the keystone species concept in ecology. Most species are generalist predators, eating molluscs such as clams, oysters etc.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.