The 'Ozone hole' is most prominently observed over which region of the Earth?
A. Equator
B. Arctic
C. Antarctic
D. Tropics
Answer: Option C
Solution (By JKExamLibrary)
The 'ozone hole' is a severe, seasonal thinning of the stratospheric ozone layer that occurs most prominently over the Antarctic region during the Southern Hemisphere's spring (September to November). This is due to the unique meteorological conditions in the Antarctic stratosphere, including the formation of Polar Stratospheric Clouds (PSCs) during the dark, cold winter, which provide surfaces for chemical reactions that release active chlorine from CFCs, rapidly destroying ozone when sunlight returns.
Consider statements about animal husbandry: 1. The Murrah breed is famous for high milk yield in buffaloes. 2. The Leghorn breed is famous for egg production in poultry. 3. Apiculture refers to fish farming. Which are correct?
Explanation:
The Murrah is a premier indigenous breed of water buffalo in India, renowned for its high milk yield and fat content. The White Leghorn is an exotic breed of chicken highly valued in the poultry industry for its excellent egg-laying capacity. Apiculture is the rearing and management of honeybees for honey and wax; fish farming is called pisciculture or aquaculture. Thus, statements 1 and 2 are correct.
Explanation:
Whittaker's five-kingdom system places all prokaryotes (bacteria, cyanobacteria, archaea) in Monera. They lack a true nucleus and membrane-bound organelles. Protista has unicellular eukaryotes, Fungi and Plantae are multicellular eukaryotes (except yeast). Monera reproduces asexually mainly by binary fission.
Explanation:
Secondary consumers are carnivores or omnivores that eat primary consumers (herbivores). Example: frog eating grasshopper. Producers are autotrophs, primary consumers are herbivores, decomposers break down dead matter. Trophic levels represent energy transfer steps. Energy decreases at each higher level.
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