Predators cannot perform
1. conduit for energy transfer
2. control prey species
3. make the ecosystem stable
4. Keep a check on diversity of species
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMonarch Butterfly
1. has biochemical defense mechanism
2. acquires biochemical defense mechanism during its caterpillar stage by feeding on poisonous weed
3. is highly distasteful to predator Zebra
4. both 1 and 2
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAcacia and Cactus show which kind of defenses?
1. Biochemical
2. Biomolecular
3. Morphological
4. Behavioural
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAs a mechanism of defense against herbivory, Calotropis:
(1) Has large number of thorns
(2) Secretes cardiac glycosides
(3) Produces a neurotoxin, strychnine
(4) Releases a hallucinogen
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe invasiveness of prickly pear cactus in Australia was controlled by introducing a predator from its natural habitat and this predator was
1. A ladybird
2. A moth
3. A wasp
4. A desert fly
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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 & BiologyCalotropis doesn't allow any cows and goats to browse around by releasing
1. Cardiac glucosamine
2. Cardiac glucoside
3. Cardiac glycoside
4. Cardiac nitroxide
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not a function of predators?
1. | They act as conduits for energy transfer across trophic levels |
2. | They keep prey populations under control |
3. | They help in the stabilization of the ecosystems |
4. | They decrease the species diversity in a community |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMonarch butterfly escapes from predators by
(1) foul smell
(2) bitter taste
(3) colour combination
(4) rough skin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe prickly pear cactus introduced in Australia in the 1920s got famous because of the lack of which population interaction?
1. Competition
2. Predation
3. Parasitism
4. Amensalism
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology