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10. The relationship between birth weight and degree of survival in 6908 human births in an obstetric hospital is shown in the figure below. The mode of selection for birth […]

9. Which one of the following does NOT belong to the freshwater ecosystem? (A) Estuary (B) Lentic (C) Lotic (D) Wetland Which One of the Following Does NOT Belong to […]

8. Which of the following are producers in an ecological system? (A) Macrophytes (B) Phytoplanktons (C) Zooplanktons (D) Cyanobacteria Which of the Following Are Producers in an Ecological System? Understanding […]

7. In a honey bee population, the workers are infertile but protect the queen from intruders and help in reproduction. This is an example of (2022) (A) K selection (B) […]

6. The zone of a pond system where respiration is more than production is called as _____. (A) Limnetic zone (B) Littoral zone (C) Epilimnion zone (D) Benthic zone Zone […]

5. A random fluctuation in gene frequency is called (A) Genetic drift (B) Genetic load (C) Panmixis (D) Genetic shift A Random Fluctuation in Gene Frequency Is Called Genetic Drift […]

4. The fossilization process in which mineral rich water penetrates through the pores of decomposed organic matter is known as _____. (A) Carbonization (B) Chemical fossilization (C) Petrifaction (D) Microfossilization […]

3. Which of the following pairs is/are analogous structures? (A) Human hands and bat wings (B) Butterfly wings and bat wings (C) Bat wings and bird wings (D) Dolphin flippers […]

2. Which one of the following processes emerged earliest during the course of evolution? (A) Antigen presentation (B) Antibody production (C) Phagocytosis (D) Thymic education Which Immune Process Emerged Earliest […]

1. Ecosystem ecology is the study of (A) An organism’s behavior towards environmental challenges (B) Factors that affect the interactions of individuals in a population (C) Interactions among biotic and […]