Homeostasis is
1. tendency to change with change in environment
2. tendency to resist change
3 disturbance in regulatory control
4. plants and animals extracts used in homeopathy
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMany freshwater animals cannot live for long in sea water and vice versa because of:
1. Buoyancy related problems
2. Lack of impermeable skins
3. Thermolabile enzymes
4. Osmotic considerations
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhile heat gain or heat loss is the function of ______, heat production is the function of ________ of the body of an animal.
1. Volume; Surface area
2. Surface area; Volume
3. Volume; Volume
4. Surface area; Surface area
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one of the following are important biotic factors that can affect the structure and organization of biological communities?
1. Temperature and rainfall
2. Nutrient availability and soil pH
3. Predation and competition
4. Light intensity and seasonality
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVery small animals are rarely found in polar region mainly because:
1. Smaller animals have a relatively slower heart rate
2. Smaller animals have a more surface area relative to their volume
3. Smaller animals are invariably herbivores
4. Smaller animals rely on diffusion for exchange of gases with the environment
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyJust as a person moving from Delhi to Shimla to escape the heat for the duration of hot
summer, thousands of migratory birds from Siberia and other extremely cold Northern
regions move to
1. Western Ghat
2. Meghalaya
3. Corbett National Park
4. Keoladeo National Park
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBacteria, fungi, lower plants survive in adverse conditions by:
(1) diapause
(2) suspended growth
(3) migration
(4) formation of thick-walled spores
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAnimals with a constant body temperature such as mammals and birds require more food than do animals with a changing body temperature such as reptiles and fish. Why?
(1) Much of the food is utilised to produce heat to keep warm
(2) Warm-blooded animals waste more food than cold-blooded animals
(3) Cold-blooded animals digest their food more efficiently than warm-blooded animals
(4) None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following term implies the maintenance of relatively constant physical and chemical conditions with organisms?
(1) Homeostasis
(2) Adaptation
(3) Isometry
(4) Acclimation
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statement is false?
(1) Osmoconformors are able to maintain homeostasis by physiological means or sometimes behavioural means also which ensure constant body temperature, constant osmotic concentration etc
(2) All birds and mammals, and a very few lower vertebrates and invertebrates are capable of osmoregulation and thermoregulation
(3) Thermoregulation is the major reason of the success mammals
(4) Sweating and shivering are the means of thermoregulation by humans
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology