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Recent questions tagged sec-b
ASK
A few statements are given below followed by a set of terms. Pick the correct term and write it agai
cbse
class12
ch9
exemplar
theoryquestion
biology
sec-b
strategies for enhancement in food production
asked
Jul 20, 2017
by
pady_1
1
answer
What do you understand by Snow-blindness?
cbse
class12
ch16
exemplar
theoryquestion
biology
sec-b
environmental issues
asked
Jul 12, 2017
by
pady_1
1
answer
It is a common practice to plant trees and shrubs near the boundary walls of the buildings. What pur
cbse
class12
ch16
exemplar
theoryquestion
biology
sec-b
environmental issues
asked
Jul 12, 2017
by
pady_1
1
answer
Name one green house gas and its possible source of production on a large scale. What are the harmfu
cbse
class12
ch16
exemplar
theoryquestion
biology
sec-b
environmental issues
asked
Jul 12, 2017
by
pady_1
1
answer
Is it true that if the dissolved oxygen level drops to zero, the water will become septic. Give an e
cbse
class12
ch16
exemplar
theoryquestion
biology
sec-b
environmental issues
asked
Jul 12, 2017
by
pady_1
1
answer
Is it true that carpets and curtain/drapes placed on the floor or wall surface can reduce the noise
cbse
class12
ch16
exemplar
theoryquestion
biology
sec-b
environmental issues
asked
Jul 12, 2017
by
pady_1
1
answer
What is cultural eutrophication?
cbse
class12
ch16
exemplar
theoryquestion
biology
sec-b
environmental issues
asked
Jul 12, 2017
by
pady_1
1
answer
Is it true that there is more solar energy available in the tropics? Explain briefly.
cbse
class12
ch15
exemplar
theoryquestion
biology
sec-b
biodiversity and conservation
asked
Jul 11, 2017
by
pady_1
1
answer
Is it possible that productivity and diversity of natural communities remain constant over a time of
cbse
class12
ch15
exemplar
theoryquestion
biology
sec-b
biodiversity and conservation
asked
Jul 11, 2017
by
pady_1
1
answer
Define the terms (i) Bioprospecting (ii) Endemism
cbse
class12
ch15
exemplar
theoryquestion
biology
sec-b
biodiversity and conservation
asked
Jul 11, 2017
by
pady_1
1
answer
Why is genetic variation important in the plant Rauwolfia vomitoria?
cbse
class12
ch15
exemplar
theoryquestion
biology
sec-b
biodiversity and conservation
asked
Jul 11, 2017
by
pady_1
1
answer
Explain as to how protection of biodiversity hot spots alone can reduce upto 30% of the current rate
cbse
class12
ch15
exemplar
theoryquestion
biology
sec-b
biodiversity and conservation
asked
Jul 11, 2017
by
pady_1
1
answer
What accounts for the greater ecological diversity of India?
cbse
class12
ch15
exemplar
theoryquestion
biology
sec-b
biodiversity and conservation
asked
Jul 11, 2017
by
pady_1
1
answer
Primary productivity varies from ecosystem to ecosystem. Explain.
cbse
class12
ch14
exemplar
theoryquestion
biology
sec-b
ecosystem
asked
Jul 11, 2017
by
pady_1
1
answer
Poaching of tiger is a burning issue in today's world. What implication would this activity have on
cbse
class12
ch14
exemplar
theoryquestion
biology
sec-b
ecosystem
asked
Jul 11, 2017
by
pady_1
1
answer
Human activities interfere with carbon cycle. List any two such activities.
cbse
class12
ch14
exemplar
theoryquestion
biology
sec-b
ecosystem
asked
Jul 11, 2017
by
pady_1
1
answer
What would be the reason for the faster rate of decomposition in the tropics?
cbse
class12
ch14
exemplar
theoryquestion
biology
sec-b
ecosystem
asked
Jul 11, 2017
by
pady_1
1
answer
Climax stage is achieved quickly in secondary succession as compared to primary succession. Why?
cbse
class12
ch14
exemplar
theoryquestion
biology
sec-b
ecosystem
asked
Jul 11, 2017
by
pady_1
1
answer
Arrange the following as observed in vertical stratification of a forest : Grass, Shrubby plants, te
cbse
class12
ch14
exemplar
theoryquestion
biology
sec-b
ecosystem
asked
Jul 11, 2017
by
pady_1
1
answer
In an aquarium two herbivorous species of fishes are living together feeding on phytoplanktons. As p
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
Lianas are vascular plants rooted in the ground and maintain erectness of their stem by making use o
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
The density of a population in a habitat per unit area is measured in different units. Write the uni
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
Categorise the following plants into hydrophytes, halophytes, mesophytes and xerophytes. Give reason
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
Why do submerged plants receive weaker illumination than exposed floating plants in a lake?
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
Why do fresh water organisms have contractile vacuoles whereas majority of marine organisms lack the
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
If a fresh water fish is placed in an aquarium containing seawater, will the fish be able to survive
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
What is brood parasitism? Explain with the help of an example.
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
Define Ectoparasite and endoparasite with suitable example.
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
What is high altitude sickness? Write its symptoms.
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
What is a diapause and its significance?
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
What is homeostasis?
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
Why do high areas have brighter sunlight and lower temperatures as compared to the plains?
cbse
class12
ch13
exemplar
theoryquestion
biology
sec-b
organisms and populations
asked
Jul 10, 2017
by
pady_1
1
answer
How is mature, functional insulin hormone different from prohormone form?<br>
cbse
class12
ch12
exemplar
theoryquestion
biology
sec-b
biotechnology and its applications
asked
Jul 10, 2017
by
pady_1
1
answer
ELISA technique is based on the principles of antigen-antibody interaction. Can this technique be us
cbse
class12
ch12
exemplar
theoryquestion
biology
sec-b
biotechnology and its applications
asked
Jul 10, 2017
by
pady_1
1
answer
PCR is a useful tool for early diagnosis of an infectious disease. How.
cbse
class12
ch12
exemplar
theoryquestion
biology
sec-b
biotechnology and its applications
asked
Jul 10, 2017
by
pady_1
1
answer
Give the full form of ELISA. Which disease can be detected using it? <br>Discuss the principle under
cbse
class12
ch12
exemplar
theoryquestion
biology
sec-b
biotechnology and its applications
asked
Jul 10, 2017
by
pady_1
1
answer
In view of the current food crisis, it is said that we need another green revolution. Highlight the
cbse
class12
ch12
exemplar
theoryquestion
biology
sec-b
biotechnology and its applications
asked
Jul 10, 2017
by
pady_1
1
answer
Describe the role of $CaCl_2$ in the preparation of competent cells?
cbse
class12
ch11
exemplar
theoryquestion
biology
sec-b
biotechnology: principles and processes
asked
Jul 10, 2017
by
pady_1
1
answer
A plasmid DNA and a linear DNA (both are of the same size) have one site for a restriction endonucle
cbse
class12
ch11
exemplar
theoryquestion
biology
sec-b
biotechnology: principles and processes
asked
Jul 10, 2017
by
pady_1
1
answer
A recombinant DNA molecule was created by ligating a gene to a plasmid vector. By mistake, an exonuc
cbse
class12
ch11
exemplar
theoryquestion
biology
sec-b
biotechnology: principles and processes
asked
Jul 10, 2017
by
pady_1
1
answer
Both a wine maker and a molecular biologist who has developed a recombinant vaccine claim to be biot
cbse
class12
ch11
exemplar
theoryquestion
biology
sec-b
biotechnology: principles and processes
asked
Jul 10, 2017
by
pady_1
1
answer
What is meant by gene cloning?
cbse
class12
ch11
exemplar
theoryquestion
biology
sec-b
biotechnology: principles and processes
asked
Jul 10, 2017
by
pady_1
1
answer
Which bacteria has been used as a clot buster? What is its mode of action?
cbse
class12
ch10
exemplar
theoryquestion
biology
sec-b
microbes in human welfare
asked
Jul 9, 2017
by
pady_1
1
answer
What is a broad spectrum antibiotics? Name one such antibiotic.
cbse
class12
ch10
exemplar
theoryquestion
biology
sec-b
microbes in human welfare
asked
Jul 9, 2017
by
pady_1
1
answer
How was penicillin discovered?
cbse
class12
ch10
exemplar
theoryquestion
biology
sec-b
microbes in human welfare
asked
Jul 9, 2017
by
pady_1
1
answer
Why are cyanobacteria considered useful in paddy plants?
cbse
class12
ch10
exemplar
theoryquestion
biology
sec-b
microbes in human welfare
asked
Jul 9, 2017
by
pady_1
1
answer
How do mycorrhizal fungi help the plants harbouring them?
cbse
class12
ch10
exemplar
theoryquestion
biology
sec-b
microbes in human welfare
asked
Jul 9, 2017
by
pady_1
1
answer
How has the bacterium bacillus turingiensis helped us in controlling caterpillars of insect pe
cbse
class12
ch10
exemplar
theoryquestion
biology
sec-b
microbes in human welfare
asked
Jul 9, 2017
by
pady_1
1
answer
Why are flocs important in biological treatment of waste water?
cbse
class12
ch10
exemplar
theoryquestion
biology
sec-b
microbes in human welfare
asked
Jul 9, 2017
by
pady_1
1
answer
What are the physical barriers of a cell in the protoplast fusion experiment? How are the barriers o
cbse
class12
ch9
exemplar
theoryquestion
biology
sec-b
strategies for enhancement in food production
asked
Jul 8, 2017
by
pady_1
1
answer
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