Select Board & Class
what is the reason for low productivity of oceans despite occupying 70 % of the surface?
Who is considered as father of environmental science?
i have to make biology investigatory project of class 12 cbse on topic ecosystem.i dont know how to make it .please give me a sample project and help me to do this
what is the difference between a saprophyte and saprotroph?
what is the limitation of detritus food chain?
If we were to count the no. of insects feeding on a big tree,we would get an inverted pyramid.Why??
How would you explain the paradox that the pyramid of biomass in sea is inverted because biomass of fishes exceeds that of phytoplankton?
measurement of biomass in terms od dry weight is more accurate. why?
pyramid of energy is always uprightupwards.why?
1)Difference between detritus food chain (DFC) and grazing food chain (GFC)?
2)Represent detritus food chain by ray diagram ?
carbon cycle diagram
What does this line means,"In an aquatic system, GFC is the major conduit for energy flow" ?
List two factors that determine the vegetative and soil type of an ecosystem?
examples of gaseous and sedimentary cycles
pls explain this....
ecosystems are not exempt from the second law of thermodynamics.they need a constant supply of energy to synthesise the molecules they require,to counteract the universal tendency towars increasing disorderliness.
Difference between standing crop and standing state
@Priyanka Bansal ma'm...............Cockroach have complete tracheal ring called as a taenidia, this ring is made up of chitin that run around the trachea to protect it from collapsing.Posted byPriyanka Bansal(MeritNation Expert), 18 minutes ago..............thanks ma'm but collapsing is prevented by INCOMPLETE tracheal RINGS !! the n how can COMPLETE tracheal rings in case ofCockroach prevents it from collapsing ??
collection of medicinal plants and its uses . how to prepare medicine using those med. plants??
plz help me on this . give the names of @least 13 common medicinal plants ?
who perfomed the blender experiment in regard to certain nature of dna? what was the objective of this experiment ? pls explain the procedure in details
what is meant by term ecological succession?? provide details regarding ecological succession on land and water.
what is meant by FADH2 and NADH2 in bioenegetics???what r its functions?
Define ecological pyramids and describe with examples, pyramids of number and biomass.
1. In an ecosystem dominated by trees, the pyramid (of numbers) is _________ type. How is it inverted ? Can't it be spindle shaped too?
2.Which one of the following has the largest population in a food chain? shouldnt it be producers as decomposers are not included in the food chain?.
why measurement of biomass in terms of dry weight is more accurate?
what is the difference between regulators and conformers
why is the pyramid of biomass of phytoplankton inverted ?
PLEASE UPLOAD 2012 BOARD QUESTION PAPERS !
DRAW THE PYRAMID OF BIOMASS IN A SEA AND IN A FOREST. EXPLAIN GIVING REASONS WHY THE TWO PYRAMID IS DIFFERENT?
when is the pyramid of biomass spindle shaped?
suggest some investigatory projects of biology
what is eco system
The second trophic level in a lake is-
(a) Phytoplankton
(b) Zooplankton
(c) Benthos
(d) Fishes
A man who is eating curd/yoghurt can be placed in which trophic level and why?
Differences between Carbon and Phosphorous cycle ?
What is the difference between decomposers and detritivores?
plz help me...
the differences between grazing food chain and detritus food chain ?
why are algae a good source of food supplements
food chain
Is the pyramid of numbers for forests inverted or upright? Explain.
Can you give 2 differences between carbon phosphorous cycle?
What is meant by competitive release in an ecosystem?
State the difference between the first trophic level of detritus food chain and grazing food chain.
The first trophic level of detritus food chain is often the dead and decaying organic matter whereas the grazing food chain starts with the living green plants.
The first trophic level organisms of detritus food chain are saprophytes whereas the starters of grazing food chain are producers.
Is that second point actually right? How can the organic matter and saprophytes be the same?Aren't saprophytes the consumers of detritus?Correct me if i'm wrong.
name the pioneer and the climax species in a water body.mention the changes observed in the biomass and the biodiversity of the successive seral communities developing in the water body.
Why Saprophytes are not included in pyramids?
what is d difference between fragmentation and catabolism?????????
difference between upright pyramid and inverted pyramid?
1) Vertical distribution of different species occupying different levels is called ___________.
2) Of the incident solar radiation (on earth) less than 50% of it is __________________.
a. Draw a pyramid of numbers of a situation ,where a large population of insects
meaning of detritus?
why is Concentration of toxins found to be more in the organisms occupying the highest trophic level in the food chain in a polluted water body? Explain with the help of a suitable example?
Secondary producers are
(a) Herbivores
(b) Producers
(c) Carnivores
(d) None of the above
what are plant hormones? give the uses of the plant hormones like auxins,gibberlins,cytokinins and artificial hormones like ABA,ethylene??
why does human body maintain constant temperature both in summerss and winters ?
E.g: 9876543210, 01112345678
We will give you a call shortly, Thank You
Office hours: 9:00 am to 9:00 pm IST (7 days a week)
Syllabus
what is the reason for low productivity of oceans despite occupying 70 % of the surface?
Who is considered as father of environmental science?
i have to make biology investigatory project of class 12 cbse on topic ecosystem.i dont know how to make it .please give me a sample project and help me to do this
what is the difference between a saprophyte and saprotroph?
what is the limitation of detritus food chain?
If we were to count the no. of insects feeding on a big tree,we would get an inverted pyramid.Why??
How would you explain the paradox that the pyramid of biomass in sea is inverted because biomass of fishes exceeds that of phytoplankton?
measurement of biomass in terms od dry weight is more accurate. why?
pyramid of energy is always uprightupwards.why?
Ans net osmosis occur from B to A
Chamber B has higher solute potential
1)Difference between detritus food chain (DFC) and grazing food chain (GFC)?
2)Represent detritus food chain by ray diagram ?
carbon cycle diagram
a) 37 kg/m2
b) 11 kg/m2
c) 5 kg/m2
d) 1.5 kg/m2
What does this line means,"In an aquatic system, GFC is the major conduit for energy flow" ?
List two factors that determine the vegetative and soil type of an ecosystem?
examples of gaseous and sedimentary cycles
pls explain this....
ecosystems are not exempt from the second law of thermodynamics.they need a constant supply of energy to synthesise the molecules they require,to counteract the universal tendency towars increasing disorderliness.
Difference between standing crop and standing state
@Priyanka Bansal ma'm...............Cockroach have complete tracheal ring called as a taenidia, this ring is made up of chitin that run around the trachea to protect it from collapsing.Posted byPriyanka Bansal(MeritNation Expert), 18 minutes ago..............thanks ma'm but collapsing is prevented by INCOMPLETE tracheal RINGS !! the n how can COMPLETE tracheal rings in case ofCockroach prevents it from collapsing ??
collection of medicinal plants and its uses . how to prepare medicine using those med. plants??
plz help me on this . give the names of @least 13 common medicinal plants ?
(1) High productivity
(2) High diversity
(3) Complex food chains
(4) More cycling of nutrients
Answer is (1). How?
who perfomed the blender experiment in regard to certain nature of dna? what was the objective of this experiment ? pls explain the procedure in details
what is meant by term ecological succession?? provide details regarding ecological succession on land and water.
what is meant by FADH2 and NADH2 in bioenegetics???what r its functions?
(b) How do they help in establishing the next type of vegetation ?
(c) Mention the type of climax community that ultimately get established.
Define ecological pyramids and describe with examples, pyramids of number and biomass.
1:nitrogen
2:phosphorus
3:carbon
4:sunlight
1. In an ecosystem dominated by trees, the pyramid (of numbers) is _________ type. How is it inverted ? Can't it be spindle shaped too?
2.Which one of the following has the largest population in a food chain? shouldnt it be producers as decomposers are not included in the food chain?.
why measurement of biomass in terms of dry weight is more accurate?
What should I mark if the question comes in neet ?
Different book have a different answer !
what is the difference between regulators and conformers
why is the pyramid of biomass of phytoplankton inverted ?
PLEASE UPLOAD 2012 BOARD QUESTION PAPERS !
DRAW THE PYRAMID OF BIOMASS IN A SEA AND IN A FOREST. EXPLAIN GIVING REASONS WHY THE TWO PYRAMID IS DIFFERENT?
91. Diversification in plant life appeared
(A) Due to long period of evolutionary changes
(B) Due to abrupt mutations
(C) Suddenly on earth
(D) By seed dispersal.
94. Common indicator organism of water pollution is
(A) Lemna paucicostata
(B) Eichhornia crassipes
(C) Escherichia coli
(D) Entamoeba histolytica.
when is the pyramid of biomass spindle shaped?
suggest some investigatory projects of biology
what is eco system
The second trophic level in a lake is-
(a) Phytoplankton
(b) Zooplankton
(c) Benthos
(d) Fishes
(b) List two important defence mechanisms plants have developed against herbivory ?
A man who is eating curd/yoghurt can be placed in which trophic level and why?
Differences between Carbon and Phosphorous cycle ?
What is the difference between decomposers and detritivores?
b)why are the pyramids referred to as upright or inverted? explain.
1). first trophic level
2). second trophic level
3). third trophic level
4). fourth trophic level
its answer according to me should be fourth trophic level as first one are plants, second is cow, third should be bacteria which convert milk into curd fourth one should be the man eating the curd, but given answer is third trophic level. but how?
plz help me...
the differences between grazing food chain and detritus food chain ?
why are algae a good source of food supplements
food chain
Is the pyramid of numbers for forests inverted or upright? Explain.
Can you give 2 differences between carbon phosphorous cycle?
What is meant by competitive release in an ecosystem?
State the difference between the first trophic level of detritus food chain and grazing food chain.
The first trophic level of detritus food chain is often the dead and decaying organic matter whereas the grazing food chain starts with the living green plants.
The first trophic level organisms of detritus food chain are saprophytes whereas the starters of grazing food chain are producers.
Is that second point actually right? How can the organic matter and saprophytes be the same?Aren't saprophytes the consumers of detritus?
Correct me if i'm wrong.
name the pioneer and the climax species in a water body.mention the changes observed in the biomass and the biodiversity of the successive seral communities developing in the water body.
Why Saprophytes are not included in pyramids?
what is d difference between fragmentation and catabolism?????????
difference between upright pyramid and inverted pyramid?
(a) Both decomposition and NEP would decrese
(b) Both decomposition and NEP would increase
(c) Neither would change
(d) Decomposition rate would decrease and NEP would increase
1) Vertical distribution of different species occupying different levels is called ___________.
2) Of the incident solar radiation (on earth) less than 50% of it is __________________.
a. Draw a pyramid of numbers of a situation ,where a large population of insects
meaning of detritus?
why is Concentration of toxins found to be more in the organisms occupying the highest trophic level in the food chain in a polluted water body? Explain with the help of a suitable example?
Secondary producers are
(a) Herbivores
(b) Producers
(c) Carnivores
(d) None of the above
. If 10,000 J of energy is present at the first trophic level in the grassland ecosystem, then this much of energy can support tertiary consumers with an energy content of (1) 100 J (2) 1 J (3) 10 J (4) 1000 J
Can you also explain if answer will be same if it was tropical or aquatic ecosysyem?
what are plant hormones? give the uses of the plant hormones like auxins,gibberlins,cytokinins and artificial hormones like ABA,ethylene??
why does human body maintain constant temperature both in summerss and winters ?