When certain exotic species are introduced into a geographical area, they become invasive mainly because:
1. The invaded land has unlimited resources for the introduced species
2. The invaded land does not have its natural predator
3. The population of the introduced species in the invaded land is very low
4. Introduced species do not face any competition in the introduced land
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn a field experiment, when all Pisaster starfish were removed from an enclosed intertidal area, the result was:
1. Increase in diversity of invertebrates
2. Extinction of many invertebrate species
3. Inability of the Pisaster to enter the area again
4. Replacement of Pisaster by other starfish
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA species whose distribution is restricted to a small geographical area because of the presence of a competitively superior species is found to expand its distributional range dramatically when the competing species is experimentally removed. This is called:
1. Competitive Exclusion
2. Competitive Release
3. Competitive Supremacy
4. Competitive Inclusion
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not an ectoparasite?
1. Lice on humans
2. Copepods on marine fishes
3. Mistletoe on other plants
4. Female Anopheles on humans
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTo get pollinated by a bee, the Mediterranean Orchid, Ophrys, employs:
1. Sexual deceit
2. Pseudo-copulation
3. Reward in the form of Nectar
4. Place for laying eggs
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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 & BiologyIn the logistic growth equation given below, the carrying capacity is represented by:
dN/dT = rN(K-N)/K
1. N
2. r
3. K
4. K-N/K
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe plant Cuscuta is a:
1. Partial root parasite
2. Partial stem parasite
3. Total root parasite
4. Total stem parasite
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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 & BiologyIn a tide pool, 15 species of invertebrates were reduced to 8 after one species was removed. The removed species may be a:
1. Parasite
2. Mutualist
3. Top predator
4. Herbivore
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology