Ecotone is:
1. A polluted area
2. The bottom of a lake
3. A zone of transition between two communities
4. A zone of developing community
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Which of the following is a partial root parasite?
1. Sandalwood
2. Mistletoe
3. Orobanche
4. Ganoderma
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1. | pre-reproductive individuals are more than reproductive individuals. |
2. | reproductive individuals are less than post-reproductive individuals. |
3. | reproductive and pre-reproductive individuals are equal in number. |
4. | pre-reproductive individuals are less than reproductive individuals. |
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The survivorship curve of humans is:
1. Type I
2. Type II
3. Type III
4. Type IV
Semelparous organisms:
1. produce young only late in life
2. produce a large batch of young and die
3. produce young over most of their life
4. produce a single offspring near the end of their reproductive potential
A form of mimicry where a harmless species has evolved to imitate the warning signals of a harmful species directed at a predator of them both is called:
1. Mullerian mimicry
2. Batesian mimicry
3. cryptic coloration
4. disruptive coloration
The phenomenon of character displacement is seen in:
1. sympatric species
2. allopatric species
3. primary succession
4. secondary succession
To avoid herbivory milkweeds secret latex containing:
1. cardiac glycosides
2. stipules
3. mustard oils
4. strychnine
The appearance of an animal that warns predators it is toxic, distasteful or dangerous is called as:
1. Batesian mimicry
2. Mullerian mimicry
3. aposematic coloration
4. cryptic coloration
Assertion: Parasitoidism is a strategy that is actually closer to predation.
Reason: A parasitoid is an organism that lives in close association with its host and at the host's expense, and which sooner or later kills it.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false