Which one from those given below is the period for Mendel's hybridization experiments?
1856 - 1863
1840 - 1850
1857 - 1869
1857 - 1869
A.
1856 - 1863
Which one of the following statements is not valid for aerosols?
They are harmful to human health
They alter rainfall and monsoon patterns
They cause increased agricultural productivity
They cause increased agricultural productivity
In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation?
Intrauterine transfer
Gamete intracytoplasmic fallopian transfer
Artificial Insemination
Artificial Insemination
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by
Water
Bee
Wind
Wind
Which of the following in sewage treatment remove suspended solids?
Tertiary treatment
Secondary treatment
Primary treatment
Primary treatment
Thalassemia and sickle cell anemia are caused due to a problem in globin molecule synthesis. Select the correct statement
Both are due to a qualitative defect in globin
chain synthesis
Both are due to a quantitative defect in globin chain synthesis
Thalassemia is due to less synthesis of globin molecules
Thalassemia is due to less synthesis of globin molecules
Artificial selection to obtain cows yielding higher milk output represents
Stabilizing selection as it stabilizes this character in the population
Directional as it pushes the mean of the character in one direction
Disruptive as it splits the population into two one yielding higher output and the other lower output
Disruptive as it splits the population into two one yielding higher output and the other lower output
Alexander Von Humbolt described for the first time
Ecological Biodiversity
Laws of limiting factor
Species area relationships
Species area relationships
The function of copper ions in copper releasing IUD's is :
They suppress sperm motility and fertilising capacity of sperms
They inhibit gametogenesis
They make uterus unsuitable for implantation
They make uterus unsuitable for implantation
Homozygous purelines in cattle can be obtained by
mating of related individuals of same breed
mating of unrelated individuals of same breed
mating of individuals of different breed
mating of individuals of different breed
