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CBSE - X - Biology - Environment
What is the difference between a food chain and a food web?
Asked by sagarmishra
6th July 2022,
5:02 PM
CBSE - X - Biology - Environment
Why is nutrient cycle in ecosystem called as bio geo chemical cycle . How geological factors affect it What chemical reactions take place in nutrient cycling.
Asked by saradamahapatra9999
15th March 2022,
3:06 PM
CBSE - X - Biology - Environment
Each member of family of 5 persons derived their averge energy need of 2700kcal by consuming the goat meat. How much energy had fallen on vegetation for preparing food for goat? (Take 1cal = 4.2J). Also give answer in joules.
Asked by viraat.verma26
14th January 2022,
8:51 AM
CBSE - X - Biology - Environment
What will happen if we kill all the organisms in one trophic level
Asked by magic99505
13th November 2021,
3:58 PM
CBSE - X - Biology - Environment
Is food web a combination of food chains?
Asked by adipadmakarri
21st January 2021,
10:58 PM
CBSE - X - Biology - Environment
What are trophic levels Give example of food chain state the different tropic levels.
Asked by chinmaypatil34.10tpstl
22nd December 2020,
10:37 AM
CBSE - X - Biology - Environment
If the following food chain 5 J of energy is available to man, How much energy was available at producer level? Plant --------> Sheep --------->Man
Asked by gourikori21
9th December 2020,
3:12 PM
CBSE - X - Biology - Environment
how will the unutilized energy of an organism be released in the air?
Asked by acshanadhana15
17th September 2020,
12:05 PM
CBSE - X - Biology - Environment
what is community heat?
Asked by acshanadhana15
17th September 2020,
11:42 AM
CBSE - X - Biology - Environment
Which will get more energy secondary consumers or tertiary consumers?
Asked by manyavalecha30
16th April 2020,
5:44 PM
CBSE - X - Biology - Environment
In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain? Plants--> Sheep --> Man
Asked by jagdishpd
3rd March 2020,
12:06 PM
CBSE - X - Biology - Environment
what is a food chain
Asked by tompkoshy
13th February 2020,
3:53 PM
CBSE - X - Biology - Environment
The flow of energy in an ecosystem is acyclic. How?
Asked by kumarirakhiact30
3rd February 2020,
8:18 AM
CBSE - X - Biology - Environment
Every ecosystem is a dynamic system,how?
Asked by kumarirakhiact30
2nd February 2020,
1:18 PM
CBSE - X - Biology - Environment
why energy flow is unidirectional
Asked by rupalidhaigude7
28th December 2019,
9:11 AM
CBSE - X - Biology - Environment
what is 10 percent law? give an example.
Asked by haseenakhanum00
8th December 2019,
9:06 AM
CBSE - X - Biology - Environment
Construct the food web with the following? Grass plants grasshopper frog snake eagle goat fox tiger wolf rabbit
Asked by chilukurivarshitha
8th October 2019,
5:13 PM
CBSE - X - Biology - Environment
a) if both assertion and reason are true and reason is correct explanation of assertion b)if both assertion and reason are true and reason is not correct explanation of assertion c) if assertion is true but reason is false d)if both assertion and reason are false assertion:there is always interaction b/w neighbouring a or distinct reason:an ecosystem is recognised as self regulating and self sustaining entity
Asked by abhimpps2005
13th September 2019,
3:03 PM
CBSE - X - Biology - Environment
Difference between autotrophs and heterotrophs
Asked by rupalianandjoshi1982
13th July 2019,
10:50 AM
CBSE - X - Biology - Environment
What may happen if all herbivore s are killed in a terrestrial ecosystem
Asked by abasheer7862
8th July 2019,
8:25 PM
CBSE - X - Biology - Environment
Is sparrow omnivorous?
Asked by Shvatsal9999
23rd January 2019,
4:19 PM
CBSE - X - Biology - Environment
what happen if all decomposers are eliminated from earth
Asked by jayasreebalu92
21st January 2019,
10:03 PM
CBSE - X - Biology - Environment
Difference between food chain & food web.
Asked by agraharianiruddha
12th January 2019,
5:36 PM
CBSE - X - Biology - Environment
Energy flow in foodchain is always unidirectional justify this statement.
Asked by Eshasharma01
7th January 2019,
4:32 PM
CBSE - X - Biology - Environment
butterfly is a ....................... consumer
Asked by ASHISHKARCHE123
13th December 2018,
11:33 AM
CBSE - X - Biology - Environment
why pyramid of energy is always upright ?
Asked by priyaraj8824
14th November 2018,
9:21 PM
CBSE - X - Biology - Environment
Formation of grand canyon in South western United States is an example
Asked by abhinavbhardwaj4002
4th September 2018,
10:08 PM
CBSE - X - Biology - Environment
explain an example of food chain.write down different trophic levels
Asked by Simrankotiyal2003
16th June 2018,
2:51 PM
CBSE - X - Biology - Environment
What is Flora & fauna
Asked by Amangagrai71
13th June 2018,
9:55 AM
CBSE - X - Biology - Environment
Why we say energy flow in the biosphere is unidirectional ?
Asked by prabal
14th March 2018,
9:38 AM
CBSE - X - Biology - Environment
Can you please define 10% law..
Asked by Kanhabahuguna789
11th February 2018,
8:05 AM
CBSE - X - Biology - Environment
How do harmful Chemicals enter the food chain ?
Asked by pdcavita
28th December 2017,
8:32 PM
CBSE - X - Biology - Environment
define all the important component of ceol with diagram.what is protoplasm
Asked by amolshukal.2001
15th October 2017,
9:52 AM
CBSE - X - Biology - Environment
question test of environmnet
Asked by akshay.beloshe
12th October 2017,
7:31 PM
CBSE - X - Biology - Environment
test data for environment
Asked by akshay.beloshe
10th October 2017,
8:00 PM
CBSE - X - Biology - Environment
Ecosystem brief ?
Asked by akshay.beloshe
28th September 2017,
1:49 PM
CBSE - X - Biology - Environment
test Question assign1
Asked by akshay.beloshe
27th September 2017,
6:31 PM
CBSE - X - Biology - Environment
What do u mean by trophic level ?
Asked by sucharitasahoo1
30th August 2017,
8:35 PM
CBSE - X - Biology - Environment
As oxygen can dissolve in water then what is the need to provide oxygen through oxugen pump (aerator)
in aquarium ?
Asked by sucharitasahoo1
30th August 2017,
8:24 PM
CBSE - X - Biology - Environment
Why we clean water of aquarium once in a month ?
Why not in river/sea/ocean/ponds ?
Asked by sucharitasahoo1
30th August 2017,
8:21 PM
CBSE - X - Biology - Environment
A list of organisms is given below : Peacock, snake, grass, frog, grasshopper Construct a food chain showing snake at the fourth trophic level.
Asked by Topperlearning User
25th July 2017,
3:28 PM
CBSE - X - Biology - Environment
Which one of the following food chain is better and why? (a) Plant → Man (b) Plant → Goat → man
Asked by Topperlearning User
25th July 2017,
3:28 PM
CBSE - X - Biology - Environment
Observe the food chain Plant (1000 KJ) → goat → Lion (a) If autotrophs occupying the first tropic level are called producers what are herbivores called as? (b) How much energy does the lion get in the above food chain?
Asked by Topperlearning User
25th July 2017,
3:28 PM
CBSE - X - Biology - Environment
What will happen if we kill all the organisms in a trophic level?
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
Phytoplanktons → Zooplanktons → Fish → Fish-eating bird. In the above foodchain, which of the organisms will have (i) Maximum available energy? (ii) Maximum concentration of pesticides?
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
What is depicted in the above mentioned scheme?
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
The flow of energy in the food chain is unidirectional. Why?
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
(a) What are decomposers? (b) State in brief the role of decomposers in the environment.
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
In a certain study conducted on occurrence of DDT along food chains in an ecosystem, DDT in grass was found to be 0.5 ppm (parts per million), in sheep it was 2 ppm and in man it was 10 ppm. Why was the concentration of DDT maximum in case of man?
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
Producers always occupy the first trophic level in any food chain. Why?
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
Rearrange the following according to their ascending tropic levels in a food chain: Hawk, snake, grass, rabbit
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
List any two functions of food chain in an ecosystem.
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
Describe the concept of food chain with the help of an example.
Asked by Topperlearning User
25th July 2017,
3:26 PM
CBSE - X - Biology - Environment
Please help for this.
In the following food chain,20000J of energy is available to the plants.How much energy will be available for the man?
Plants--->Sheep--->Man
Asked by SHUBHAM GHODE
23rd March 2017,
12:07 PM
CBSE - X - Biology - Environment
WHY IS THE ANSWER OPTION B AND NOT OPTION C? HOW ARE THEY BOTH DIFFERENT FROM EACH OTHER? HOW TO INTERPRET PYRAMID OF BIOMASS CORRECTLY? HOW TO CHOOSE THE CORRECT PYRAMID FOR A GIVEN FOOD CHAIN?
Asked by Divyaa
12th November 2016,
6:19 PM
CBSE - X - Biology - Environment
why is the answer option c? what would happen to other animals if one of the animal population is reduced? which animal gets most affected in each case?
Asked by Divyaa
12th November 2016,
6:13 PM
CBSE - X - Biology - Environment
humans are to be categorised in which type of consumers- primary , secondary or tertiary?
Asked by jyotirmoyeep
24th March 2016,
10:13 PM
CBSE - X - Biology - Environment
How much energy does an organism will gain in a year if it has an intake of 198.227 mg of protiens(1.45calories per mg of protiens) and 25678kg of fats(18329437 calories per ton of fat) per day and has a heat loss of 2948365 ergs per 0.6875months, also give it as a percentage of initial energy it has, which is equal to 47389 etajoules.
Asked by jeel katira
13th February 2016,
6:40 PM
CBSE - X - Biology - Environment
In the following food chain 5 J energy is available to man. How much energy was available at producer level? Plant → sheep → man
Asked by Topperlearning User
4th February 2015,
12:33 PM
CBSE - X - Biology - Environment
In a food chain consisting of snake, insect, grass and frog, assign an appropriate trophic level to frog.
Asked by Topperlearning User
4th February 2015,
12:32 PM
CBSE - X - Biology - Environment
Why is apple not considered as an true fruit?Write three points of difference between mango and apple fruit formation
Asked by Raminder Singh
10th August 2014,
4:05 PM
CBSE - X - Biology - Environment
What do you mean by the term biomagnification?
Asked by Topperlearning User
1st July 2014,
3:00 PM
CBSE - X - Biology - Environment
What are the biotic components of an environment?
Asked by Topperlearning User
1st July 2014,
2:52 PM
CBSE - X - Biology - Environment
Can photosynthesis occur in ordinary tube light or any other artificial light? If not then why?
Asked by
29th June 2014,
10:40 PM
CBSE - X - Biology - Environment
During photosynthesis light energy whether trapped within the glucose molecule or light energy is used in formation of glucose?
Asked by
29th June 2014,
10:10 PM
CBSE - X - Biology - Environment
(a) What is an ecosystem? List its two main components. (b) We do not clean ponds or lakes, but an aquarium needs to be cleaned regularly. Explain.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
Give any two ways in which biodegradable substances would affect the environment.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
What would happen to the environment if decomposers were not present?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
List two main components of our environment.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
In a food chain comprising frogs, insects, birds and grass, which one of the organisms is likely to have maximum concentration of harmful non biodegradable chemicals in its body?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
Differentiate between autotrophs and heterotrophs.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
Who constitutes the first trophic level in a food chain?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
Mention types of ecosystem in a biosphere.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - X - Biology - Environment
(a) Given two examples of decomposers present in any ecosystem. (b) How is the presence of decomposers crucial in the ecosystem?
Asked by Topperlearning User
22nd November 2013,
10:37 AM
CBSE - X - Biology - Environment
List two man made ecosystems.
Asked by Topperlearning User
22nd November 2013,
10:26 AM
CBSE - X - Biology - Environment
Define the term biological magnification.
Asked by Topperlearning User
22nd November 2013,
10:24 AM
CBSE - X - Biology - Environment
What is the role of decomposers in the environment?
Asked by Topperlearning User
22nd November 2013,
10:14 AM
CBSE - X - Biology - Environment
Which of the following belong to the first trophic level? Grasshopper, Rose plant, Neem plant, Cockroach, Vulture.
Asked by Topperlearning User
22nd November 2013,
10:11 AM
CBSE - X - Biology - Environment
Which one of the following is biodegradable? Agricultural residue, plastics, insecticides, sewage.
Asked by Topperlearning User
22nd November 2013,
10:09 AM
CBSE - X - Biology - Environment
Describe the concept of trophic levels briefly.
Asked by Topperlearning User
21st November 2013,
11:14 PM
