General Science Questions (MCQs) for Competitive Examinations

General Science Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App

31. What is called the process of fusion of the male and the female gametes?
[A] Fertilisation
[B] Pollination
[C] Reproduction
[D] Seed formation

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32. Phototropic movement is controlled by ____:
[A] Auxin
[B] Gibberellin
[C] Cytokinin
[D] Ethylene

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33. Stomatal opening is based on ____:
[A] Decrease in concentration of cell sap
[B] Plasmolysis in guard cells
[C] Exosmosis
[D] Endosmosis

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34. Methane contributes towards global warming so it is called a ____ gas:
[A] Greenhouse
[B] Poisonous
[C] Infectious
[D] Carcinogenic

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35. Onion is an example of bulb, which is a modified ____:
[A] Stem
[B] Flower
[C] Root
[D] Leaf

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36. Oxygen liberated during photosynthesis is coming from _____:
[A] Water
[B] Atmosphere
[C] Carbon dioxide
[D] Breakdown of chlorophy II

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37. ___ is that branch of Biology which deals with organisms structure and its organs:
[A] Anatomy
[B] Ecology
[C] Mycology
[D] Chronobiology

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38. Who presented that all the plants and animals are composed of cells and that the cell is the basic unit of life?
[A] M. Schleiden and T. Schwann
[B] Leeuwanhoek
[C] Virchow
[D] J. E. Purkinje

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39. Maximum oxygen is available from _____:
[A] Grass lands
[B] Green forests
[C] Phytoplanktons
[D] Deserts

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40. Wings of a bird and an insect are
_____:
[A] Analogous organs
[B] Vestigial organs
[C] Homologous organs
[D] Rudimentary organs

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