Which of the following does not show symbiotic association?

In a laboratory population of 80 fruit flies, 8 died in a week, then the death rate of fruit flies is:

Read the Passage carefully and answer the the questions
The DNA fragments can be separated by a technique known as gel electrophoresis. Since DNA fragments are negatively charged molecules, they can be separated by forcing them to move towards the anode under an electric field through a medium/matrix. The separated DNA fragments can be visualised only after staining the DNA with a compound known as ethidium bromide followed by exposure to UV radiation. The repeated amplification of DNA is achieved by the use of a thermostable DNA polymerase (isolated from a bacterium, Thermus aquaticus). After completion of the biosynthetic stage, the product has to be subjected through a series of processes before it is ready for marketing as a finished product. The downstream processing and quality control testing vary from product to product. The convention for naming restriction enzymes is the first letter of the name comes from the genus and the second two letters come from the species of the prokaryotic cell from which they were isolated.
In agarose gel electrophoresis, DNA fragments move towards _______ under an electric field through a medium.

Mammals are able to survive in Antarctica or in the Sahara desert as they are

Read the paragraph and answer the question.
Broadly, genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in the single gene. These disorders are transmitted to the offspring on the same lines as we have studied in the principle of inheritance. The trait may also be linked to the sex chromosome as in case of haemophilia. It is evident that this X-linked recessive trait shows transmission from carrier female of male progeny.
Which of the following disease is a result of aneuploidy?
(A) Turner's Syndrome
(B) Klinefelter's Syndrome
(C) Down's Syndrome
(D) Phenylketonuria
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Which of the following is the primary female sex organ?

Which one of the following is not a parasitic adaptation?

Lower half of a convex lens is opaque. The image of an object placed in front will :

The cost of type 1 rice is Rs. 20 per kg and type 2 rice is Rs. 30 per kg. If both Type 1 and Type 2 are mixed in the ratio \(2: 3\), then the price per kg of the mixed variety is

\( E_1 \) and \( E_2 \) represents potential and kinetic energies of the orbital electron respectively then:

The block diagram of a transmitter will have in sequence.
(A) Power amplifier
(B) Amplitude modulator
(C) Message signal
(D) Square law device
(E) Transmitting antenna
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The optimal value of the objective function is attained at the points:

Match List I with List II

List-l (Name of compound)	List-II (Structure)
(A). Resorcinol	(I).
(B). Catechol	(II).
(C). Hydroquinone	(III).
(D). p-Cresol	(IV).

Choose the correct answer from the options given below :