Assertion: Filarial worm is transmitted to humans by Culex mosquito.
Reason: Culex prefers to breed in fresh water.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
C.
If assertion is true but reason is false.
Wuchereria (W.bancrofti & W.malayi), the filarial worms cause a slowly developing chronic inflammation of the organs in which they live for many years, usually the lymphatic vessels of the lower limbs, and the disease is called filariasis. The pathogen spread from one human being to another through mosquitoes like Culex and to a Jess extent by Anopheles and Aedes. The parasite resides in lymph vessels, connective tissues and mesentery. It is manifestated by lymphoedema accompanied by thickening of subcutaneous tissues and skin so that there is permanent swelling mostly of feet, legs, thighs, scrotal sacs, breast etc. In Culex and other mosquitoes females are blood sucking while males suck juices of flowers and fruits. Female Culex carries filarial worm from one person to another. It prefers to breed in dirty water near human. habitation.
RNA interference is essential for the
cell proliferation
cell defence
cell differentiation
micropropagation
Assertion: There are 34 biodiversity hotspots in the world.
Reason: High level of species richness is a criteria for selection of a biodiversity hotspot.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Assertion: Inbreeding increases homozygosity, thus exposes harmful recessive genes, which are eliminated by selection.
Reason: Continued inbreeding reduces fertility and productivity.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Assertion: Some marine animals find it difficult to live in fresh water and vice versa.
Reason: Some animals can tolerate a narrow salinity range, while others can tolerate a wide salinity range.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Assertion: Hbs Hbs denotes the homozygous condition for sickle-cell anaemia.
Reason: It occurs due to substitution of glutamic acid by valine at the 6 position of (B-chain of Hb.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: In a terrestrial ecosystem, detritus food chain is the major conduit for energy flow.
Reason: Solar energy is the direct source for energy supply in a detritus food chain.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false
Assertion: AIDS is caused by the HIV, a retro-virus.
Reason: Retroviruses have RNA genome.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: A male is found to be lacking facial hair and pubic hair.
Reason: It is a case of hyposecretion of testosterone from Leydig's cells of testes.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Assertion: Extra oxygen consumption in human, body is known as oxygen debt.
Reason: The extra oxygen is required by the body to oxidise the accumulated lactic acid produced during strenuous exercise.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
