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Match the Terms Given in Column I with the Terms Given in Column Ii and Column Iii Having the Same Meaning : Secondary Consumer Herbivore 1st Trophi 3rd Trophic Level Autotrophc Level (Ii) Primary Consume - Science

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प्रश्न

Match the terms given in column I with the terms given in column II and column III having the same meaning :

Column I Column II Column III
(1) Secondary consumer Herbivore 1st trophic level
(2) Primary consume Autotroph 3rd trophic level
(3) Producer Carnivore 4th trophic level
(4) Tertiary consumer Large carnivore 2nd trophic level
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उत्तर

Column I Column II Column III
(1) Secondary consumer Carnivore 3rd trophic level
(2) Primary consumer Herbivore 2nd trophic level
(3) Producer Autotroph 1st trophic level
(4) Tertiary consumer Large carnivore 4th trophic level
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अध्याय 5: Our Environment - Exercise 1 [पृष्ठ २३१]

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लखमीर सिंग Biology (Science) [English] Class 10
अध्याय 5 Our Environment
Exercise 1 | Q 80.1 | पृष्ठ २३१

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संबंधित प्रश्न

In the following food chain, plants provide 500 J of energy to rats. How much energy will be available to hawks from snakes?

Plants → Rats → Snakes → Hawks
 


Write an aquatic food chain.


A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?


The sea water contains water beetles, tadpole, fish and weeds.

Which organisms are (i) predators, and (ii) prey?


The following is a food chain that ends with human :
plants → bee → human

Explain how plants provide food for bees.


A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y

Name the organism which Y could be.


The following statement is true or false :
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.


Will the levels of biological magnification be different at different levels of the ecosystem?


What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight


What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent


In addition to wheat plants, a crop field ecosystem has organisms such as snake, peacock, eagle and mice. If the wheat plants are sprayed with pesticides periodically, which of the following will have the minimum concentration of pesticides in the body?
(a) snake
(b) eagle
(c) mice
(d) peacock


The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.


"Energy flow in food chains is always unidirectional". Justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.

 

 

______ are organisms that are able to produce their own organic food.


Natural agents like ______ are the decomposition factors breaking complex forms into simpler units.


Each level in the food chain is called a ______ level.


Which group of organisms are not constituents of a food chain?

  1. Grass, lion, rabbit, wolf
  2. Plankton, man, fish, grasshopper
  3. Wolf, grass, snake, tiger
  4. Frog, snake, eagle, grass, grasshopper

Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement. 


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