Arrange the given steps of decomposition cycle in a terrestrial ecosystem in correct sequence?
(A) Bacterial and fungal enzymes degrade detritus into simpler a inorganic substances and its catabolism.
(B) Earthworms break-down detritus into smaller particles and is called fragmentation.
(C) Leaching - water soluble inorganic nutrients go down into the soil horizon.
(D) Microbes release inorganic nutrients in the soil and it is called mineralisation.
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Alexander Fleming discovered Penicillin, an antibiotic while working on which bacteria ?

Identify the statements which hold true for cancer
(A) Cancerous cells do not show contact inhibition
(B) Chemotherapeutic drugs are used to kill cancerous cells
(C) Benign tumors can reach distant sites through blood
(D) Non-ionising radiations can also cause cancer
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Identify the correct statement about decomposition
(A) The rate of decomposition is quicker, if detritus is rich in nitrogen and sugar.
(B) Decomposition is largely an oxygen requiring process.
(C) The rate of decomposition is slow, if detritus is rich in chitin and lignin.
(D) The rate of decomposition is slow, if detritus is rich in nitrogen and sugar.
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Identify the hormone releasing IUD.

The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is also called :

Match List-l with List-II

List-l (Geological periods)	List-ll (Plant forms)
(A) Carboniferous	(I) Progymnosperms
(B) Cretaceous	(II) Monocotyledons
(C) Tertiary	(III) Gnetales
(D) Devonian	(IV) Seed ferns

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Which one of the following infections is completely curable?

Typical embryo sac at maturity is:

Answer the following questions feom the diagram given below :-

The samples in different lanes are from different sources but treated with a common restriction endonuclease. The maximum number of restriction sites are present in

Two polaroids \( P_1 \) and \( P_2 \) are set in crossed positions. A third polaroid \( P_3 \) is placed between the two making an angle \( \alpha \) with the axis passing from the first polaroid \( P_1 \). In what orientation will the transmitted intensity be maximum?

The force between the plates of a parallel plate capacitor of capacitance C, distance between plates d and potential difference V is:

MONOHYBRID CROSS
The inheritance of flower color in the dog flower (Snapdragon or Antirrhinum sp.) can be understood by crossbreeding between true-breeding red-flowered (RR) and true-breeding white-flowered plants (rr). When they were crossed, F₁ (Rr) was pink. When F₁ was self-pollinated, the F₂ results were Red, Pink and White. Here the genotype ratios were exactly as expected, but the phenotype ratios have been changed. What happened was that R was not completely dominant over r and this made it possible to distinguish Rr as pink from RR (Red) and rr (White).
What will be the genotypic ratio in F₂ generation when F₁ (Rr) was self-pollinated?