Which of the following free living soil microorganisms are used as biofertilisers?
(A) Anabaena
(B) Azospirillum
(C) Rhizobium
(D) Azotobacter
Choose the correct answer from the options given below:

Arrange the number of species of organisms in tropical Amazonian rain forest in decreasing order.
(A) Fishes
(B) Birds
(C) Plants
(D) Mammals
Choose the correct answer from the options given below:

The formation of pomato is an example of:

Arrange the given products formed during sewage treatment in correct sequence?
(A) Biogas
(B) Activated sludge
(C) Flocs
(D) Primary sludge
Choose the correct answer from the options given below:

The membrane surrounding the secondary oocyte is called-

What percentage of the earth's land area is covered by all hotspots put together?

Observe the figures and answer the question.

Which of the following is not a constituent of bio-gas?

Which of the following is not categorized under narrowly utilitarian benefit for conserving biodiversity?

A charged particle moves along a circular path in a uniform magnetic field of 0.04 T with a velocity of \( 2 \times 10^5 \text{ m/s} \). The charge to mass ratio of the particle is \( 5 \times 10^7 \text{ C/kg} \). The radius of the circular path of the charged particle is:

Thalassemia is an:

Arrange the following compounds in increasing order of their acidity:
(A) Phenol
(B) Ethanol
(C) Benzoic acid
(D) p-Nitrobenzoic acid
Choose the correct answer from the options given below:

The value of c in Rolle's theorem for the function \(f(x)=x^3-3 x\) in the interval \([0, \sqrt{3}]\) is :

Read the passage carefully to answer the questions given below
Some strains of `Bacillus thuringiensis` produce proteins that kill certain insects such as lepidopterans (tobacco budworm, armyworm), coleopterans (beetles) and dipterans (flies, mosquitoes). In `Bacillus thuringiensis` the toxin is coded by a gene `crylAc` named cry. There are a number of them, for example, the proteins encoded by the genes `crylAc` and `cryllAb` control the cotton bollworms, that of `crylAb` controls corn borer. Using conventional methods of diagnosis (serum and urine analysis, etc.) early detection is not possible. Recombinant DNA technology, Polymerase Chain Reaction (PCR) and Enzyme Linked Immuno-sorbent Assay (ELISA) are some of the techniques that serve the purpose of early diagnosis. The first clinical gene therapy was given in 1990 to a 4-year old girl with adenosine deaminase (ADA) deficiency. This enzyme is crucial for the immune system to function. The disorder is caused due to the deletion of the gene for adenosine deaminase. `RNAi` takes place in all eukaryotic organisms as a method of cellular defense. This method involves silencing of a specific mRNA due to a complementary `dsRNA` molecule that binds to and prevents translation of the `mRNA`.
Some strains of `Bacillus thuringiensis` produce proteins that do not kill ceratin organisms -