to another organism. b) Amensalism is a relationship in which one species is benefited whereas the other is unaffected. c) Predator is an organism that catches and kills other organism for food. d) Parasite is an organism which always lives inside the body of other organism and may kill it.
. Study the four statements ( to ) given below and select the two correct ones out of them. [AIPMT PRE ] a) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers. b) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.
c) Predators ultimately lead to the extinction of prey species. d) Production of chemicals such as nicotine, strychnine by the plants is metabolic disorders. The two correct statements are a) (B) and (C) b) (C) and (D) c) (A) and (D) d) (A) and (B) . Which two of the following changes ( to ) usually tend to occur in the plain dwellers when they move to high altitudes( m or more)?
[AIPMT PRE ] A) Increase in red blood cell size B) Increase in red blood cell production C) Increased breathing rate D) Increase in thrombocyte count a) (B) and (C) b) (C) and (D) c) (A) and (D) d) (A) and (B) XII Std Zoology Competitive Questions XII Std Zoology Competitive Questions MCQs for Higher Studies . Consider the following four conditions (A-D) and select the correct pair of them as adaptation to environment in desert lizards. [AIPMT PRE ] The conditions: A) Burrowing in soil to escape high temperature. B) Losing heat rapidly from the body during high temperature C) Bask in sun when temperature is low D) Insulating body due to thick fatty dermis.
a) (A) and (C) b) (B) and (D) c) (A) and (B) d) (C) and (D) . People who have migrated from the planes to an area adjoining Rohtang Pass about six months back [AIPMT PRE ] a)Have more RBC’s and their haemoglobin has a lower binding affinity to