Multiple Choice QuestionsWhen a natural predator (living being) is applied on the other pathogen organism to control them, this process is called
biological control
genetic engineering
artificial control
confusion technique
Match column I with column II and select the correct option from the codes given below.
| Column I | Column II |
| A. Commensalism | (i) One inhibited, other unaffected |
| B. Parasitism | (ii) One benefitted, other unaffected |
| C. Mutualism | (iii) Both are benefitted |
| D. Amensalism | (iv) One benefitted, other harmed |
A - (iv), B - (ii), C- (iii), D - (i)
A - (iii), B - (iv), C - (ii), D - (i)
A - (ii), B - (iv), C - (iii), D - (i)
A - (ii), B - (iv), C - (i), D - (iii)
C.
A - (ii), B - (iv), C - (iii), D - (i)
Commensalism is an association between two organisms in which one benefits and the other derives neither benefit nor harm.
Parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm and is adapted structurally to this way of life.
Mutualism is the way two organisms of different species exist in a relationship in which each individual fitness benefits from the activity of the other.
Amensalism is any relationship between organisms of different species in which one organism is inhibited or destroyed while the other organism remains unaffected.
Which of the following is used as bioinsecticide?
Bacillus polymyxa
Cylindrospermum licheniforme
Phytophthora palmivora
Chrysanthemum cinerarifolium
Most animals that live in deep oceanic waters are
tertiary consumers
detritivores
primary consumers
secondary consumers
Assertion: In a terrestrial ecosystem, detritus food chain is the major conduit for energy flow.
Reason: Solar energy is the direct source for energy supply in a detritus food chain.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Assertion : Secondary succession takes place in recently denuded area.
Reason : It is caused due to baring of an area.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
The bacteria which attack dead animals are
first link of the food chain and are known as primary producers
second link of the food chain and are herbivorous
third link of the food chain and are tertiary consumers
the end of food chain and are decomposers.
Switch
