Which of the following is a part of detritus food chain?

ABO blood group is an example of:

Microbes in human welfare Microbes are a very important component of life on earth. we use microbes and microbially derived products almost every day, like LAB to make curd, yeast to make bread, adding flavor and texture to cheese, producing antibiotics etc. The addition of LAB, improves the milk quality by increasing vit. B12. Cheese is one of the oldest food items in which microbes are used. For example, large holes in Swiss cheese are due to CO2 produced by the bacterium Propionibacterium sharmanii. The BOD test measures the rate of uptake of oxygen by microorganisms in a sample of water and thus, indirectly, BOD is a measure of the organic matter present in the water. The greater the BOD of waste water, the more is its polluting potential. In anaerobic sludge digesters, bacteria produce a mixture of gases like methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as a source of energy. Biofertilisers are organisms that enrich the nutrient quality of the soil. The main sources of biofertilisers are bacteria, fungi and cyanobacteria. You have studied about the nodules on the roots of leguminous plants formed by the symbiotic association of Rhizobium. These bacteria fix atmospheric nitrogen into organic forms, which is used by the plant as a nutrient. Other bacteria can fix atmospheric nitrogen while free-living in the soil (examples Azospirillum and Azotobacter).
Identify, the free living bacteria in soil, which can fix the atmospheric nitrogen.

Match List I with List II

List - I	List - II
(A) Phenotype reflects the contribution of each allele	(I) Pleiotropy
(B) Multiple phenotypic expressions by a single gene	(II) Linkage
(C) Generation of non-parental gene combinations	(III) Polygenic inheritance
(D) Parental gene combinations higher than non- parental type in \(F_2\) progeny	(IV) Recombination

Choose the correct answer from the options given below:

Match List I with List II.

LIST I	LIST II
A. Green Revolution	I. Corrective therapy of hereditary disease
B. Gene therapy	II. Increased yield and better management of improved crop varieties
C. Genetic Engineering Approval Committee	III. Mass production of safe and more effective therapeutics
D. Recombinant DNA techonologies	IV. Make decision to introduce GM organism for public service

Choose the correct answer from the options given below:

Read the passage carefully and answer the questions based on the passage:
Pollen pistil interaction involves all events from the landing of pollen grains on the stigma until the pollen tube enters the embryo sac (when the pollen is compatible). When a pollen tube grows through the style and enters into the ovules, it finally discharges two male gametes in one of the synergids. Syngamy and triple fusion are two fusion events occur in angiosperms. Thus, angiosperms exhibit double fertilization. The products of these fusions are the diploid zygote and triploid primary endosperm nucleus. Zygote develops into embryo and primary endosperm cell forms the endosperm tissue. The developing embryo passes through different stages before maturation.
With reference to reproduction in flowering plants, which one of the following is incorrect?

Match List-l with List-ll

List-l (Microbes)	List-II (Products or uses)
(A). Trichoderma polysporum	(I). Blood cholesterol lowering agent
(B). Streptococcus	(II). Citric acid
(C). Aspergillus niger	(III). Clot buster to remove blood clots
(D). Monascus purpureus	(IV). Cyclosporin A

Choose the correct answer from the options given below:

The maximum value of the objective function \(Z=2 x+y\) of an LPP, subject to the constraints \(x \leq 6, y \leq 2, x-y \leq 0\), \(x \geq 0, y \geq 0\), is:

The feasible region represented by the constraints of the linear programming problem :
\(x+y \leq 6, y \leq 7, x \geq 4, x, y \geq 0\) is :

The ratio of energies of photons produced due to the transition of an electron of hydrogen atom from its
i. second permitted energy level to the first level and
ii. the highest permitted energy level to the first energy level is

The electric field is defined as \(\vec{E} = \lim_{q_0 \to 0} \frac{\vec{F}}{q_0}\) where \(q_0\) is the test charge and \(\vec{F}\) force on \(q_0\) due to the source charge. The meaning of \(\lim_{q_0 \to 0}\) is :

Value of \(\frac{e^{\sin \left(\tan ^{-1} x+\cot ^{-1} x\right)}}{e^{\sin \left(\sin ^{-1} x+\cos ^{-1} x\right)}}, x \in[-1,1]\), is:

The area of the region bounded by parabola \(x^2=4 y\), straight line \(x=2\) and \(x\)-axis, is