An electrostatic precipitator in ...
Bt -toxins are released as inac...
State two postulates of Oparin and Haldane with reference to...
Name the type of cross that would help to find the genotype ...
A herd of cattle is showing reduced fertility and productivi...
Suggest two practices giving one example each, that help pro...
List four benefit to human life by eliminating the use of CF...
Give the binomials of two types...
Differentiate between the genetic codes given below:
How many cells are present in the pollen grains at the time ...
Name the group of cells the HIV...
Rearrange Ramapithecus, Aus...
(a) Explain the significance of "palindromic nucleotide...
Name a human disease, its causa...
Why is there fear amongst the guardians that their adolescen...
Explain addiction and dependence in respect of drug or...
Explain ‘YAC’ and mention what was it used for.<...
List the two methodologies which were involved in human geno...
Both Haemophilia and Thalassemi...
Write the importance of ‘pollen bank’.
Trace the development of an end...
Describe the roles of heat, primers and the bacterium Th...
Secondary treatment of the sewa...
Explain the various steps involved in the production of arti...
Describe the inter-relationship between productivity, gross ...
Write the desirable characters a farmer looks for in his sug...
How did plant breeding techniques help north Indian farmers ...
How do kangaroo, rats and desert plants adapt themselves to ...
It is commonly observed that pa...
Write any two ways in which the gene expression is regulated...
Absence of lactose in the cultu...
State the Mendel’s law of inheritance that is universa...
A pea plant bearing axial flowe...
Explain the following phases in the menstrual cycle of a hum...
(a) When a seed of an orange is...
A proper understanding of menstrual cycle can help immensely...
Write any two limitations of ecological pyramids.
What is an ecological pyramid ? Compare the pyramids of ener...
Explain ‘fitness of a species’’ as mention...
Compare, giving reasons, the J-shaped and S-shaped models of...
Limitations of ecological pyramids :
(i) It never takes into account the same species belonging to two or more trophic levels.
(ii) It assumes a simple food chain, which never exists in nature.