Multiple Choice QuestionsIn stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
Carbon
Cl
Oxygen
Fe
What type of ecological pyramid would be obtained with the following data?
Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g
Inverted pyramid of biomass
Pyramid of energy
Upright pyramid of biomass
Upright pyramid of numbers
Natality refers to
Death rate
Birth Rate
Number of individuals entering a habitat
Number of individuals leaving the habitat
Match the items given in Column I with those in Column II and select the correct option given below:
| Column I | Column II | ||
| a | Herbarium | i | It is a place having a collection of preserved plants and animals |
| b | Key | ii | A list that enumerates methodically all the species found in an area with brief description aiding identification |
| c | Museum | iii | Is a place where dried and pressed plant specimens mounted on sheets are kept |
| d | Catalogue | iv | A booklet containing a list of characters and their alternates which are helpful in identification of various taxa. |
| a | b | c | d |
| (i) | (iv) | (iii) | (ii) |
| a | b | c | d |
| (iii) | (ii) | (i) | (iv) |
| a | b | c | d |
| (iii) | (iv) | (i) | (ii) |
| a | b | c | d |
| (ii) | (iv) | (iii) | (i) |
The direction of energy flow is
Producers → Herbivores → Decomposers → Omnivores
Producers → Carnivore → Herbivores → Decomposes
Decomposers → Carnivores → Herbivores → Producers
Producers → Herbivores → Carnivores → Decomposers
If the Bengal tiger become extinct
Hyenas and wolves will become scarce
Its gene pool will be lost forever
The wild areas will be safe for man and domestic
The population of beautiful animals like deer will get stabilised
Stability of ecosystem depends upon
Primary productivity
Interchange between producers and consumers
Number of producers
Number of consumers
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