Identify the contraceptive measure which can not be practiced by human females:

Read the passage carefully. Attempt the questions.
In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of these regulatory mechanisms. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Benign tumors normally remain confined to their original location. The malignant tumors, on the other hand are a mass of proliferating cells. These cells actively divide and starve the normal cells by competing for vital nutrients. Cells sloughed from such tumors reach distant sites through blood, and wherever they get lodged in the body, they start a new tumor there. This property is called metastasis. Transformation of normal cells into cancerous cells may be induced by physical, chemical or biological agents called carcinogens.
Cancer is caused by:
A. Carcinogens
B. Protein rich foods
C. Primary lymphocytes
D. Oncogenes
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Analogous structures like flippers of Penguins and Dolphins are formed as a result of:

Wings of an insect and wings of a bird are :

Arrange the trophic levels in an order from lowest to highest in a terrestrial food chain:
(A). Wolf
(B). Grass
(C). Cow
(D). Lion
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Match List I with List II

List I (Terms)	List ll (Features)
(A) AlIele	(I) The position on the chromosome where a gene occurs
(B) Locus	(II) Testing a suspected heterozygote by crossing it with a known homozygous recessive
(C) Gene	(III) One of two or more alternative nucleotide sequences at a single gene locus
(D) Test Cross	(IV) A length of DNA that codes for a particular polypeptide or protein

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Match List-I with List-II

List-I (Evolutionary stages of human species)	List-II (Time of origin)
(A) Ramapithecus	(I) About 1.5 million years ago
(B) Neanderthal man	(II) About 2 million years ago
(C) Australopithecines	(III) 1,00,000-40,000 years ago
(D) Homo erectus	(IV) About 15 million years ago

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Flower colour in Antirrhinum sp. is an example of:

Which of the following statements are correct?
A. Photo electric current does not depend on the nature of the emitter material.
B. Photo electric effect is an instantaneous process.
C. The stopping potential is directly related to the maximum kinetic energy of electrons emitted.
D. Energy required for the electron emission from the metal should be less than the work function.
E. The dualism of matter is inherent in the de Broglie relation.
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The value of a determinant is unaltered if:

Which of the radiation of sun light is used as heat energy?

When silver or gold is leached as follows,
\(4M + 8CN^- + 2H_2O + O_2 \rightarrow\) _______, the product is :
(M = Ag or Au)

Which antibody is released in response to allergy?