Which one of the following is a result of convergent evolution?

Identify the symptoms of Amoebiasis from the following.
(A) Constipation
(B) Diarrhoea and vomitting
(C) Abdominal pain and cramps
(D) Excess mucous and blood clots in stool
Choose the correct answer from the options given below:

Which one of the following human ancestors probably lived in East African grasslands two million years ago?

The genetic disorder, Down's Syndrome is caused due to:

Nicotine stimulates the adrenal gland to release:
(A) Thyroid stimulating hormone (TSH)
(B) Adrenaline
(C) Estrogen
(D) Nor-adrenaline
Choose the correct answer from the options given below:

Read the following passage carefully and answer the given questions. During anaerobic sludge digestion, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide. These gases form biogas and can be used as source of energy as it is inflammable. The bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. You must have noticed that bottled fruit juices bought from the market are clearer as compared to those made at home. This is because the bottled juices are clarified by the use of pectinases and proteases. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. 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.
BOD is a measure of-

The presence of additional copy of X chromosome in humans lead to

Match List-l with List-ll

List-l (Disease)	List-II (Characteristic symptoms)
(A) Malaria	(I) Inflammation of lower limb
(B) Filariasis	(II) Cycles of fever
(C) Ringworms	(III) Blood clots and excess mucus in stools
(D) Amoebiasis	(IV) Scaly lesions on nails

Choose the correct answer from the options given below:

The distance between the line \(\vec{r}=2 \hat{i}+2 \hat{j}-3 \hat{k}+\lambda(\hat{i}+\hat{j}+4 \hat{k})\) and the plane \(\vec{r} \cdot(\hat{i}-5 \hat{j}+\hat{k})-4=0\) is:

In 5 trials of binomial distribution, the probability of 3 successes is 4 times the probability of 2 successes.
The probability of success in each trial is :

Area of the region bounded by the curve \(y=\cos x\) between \(x=0, x=\pi\) and \(x\)-axis is :

How many episodes of mass extinctions of species have occurred on earth since the origin and diversification of life?

The matrix \(A=\left[\begin{array}{lll}0 & 0 & 3 \\ 0 & 3 & 0 \\ 3 & 0 & 0\end{array}\right]\) is a