Recombinant DNA technology involves several steps in which initial step is of isolation of the DNA. Which enzymes are used in the process for the breakdown of fungal cell, plant cell and bacterial cell respectively?
Lysozyme, lipases, trypsin
Chitinase, cellulase, lysozyme
Chitinase, cellulase, trypsin
Trypsin, lipases, cellulase
Which of the following is correct regarding HIV, hepatitis B, gonorrhoea, trichomoniasis?
Trichomoniasis is a STD whereas other are not
Gonorrhoea is a viral disease whereas others are bacterial
HIV is a pathogen whereas others are diseases
Hepatitis B is eradicated completely whereas others are not
Assertion : Interferons are antiviral proteins.
Reason : Interferons are secreted by virus infected cells.
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 produces pureline.
Reason : It causes homozygosity.
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 : Parturition is induced by neural signal in maternal pituitary.
Reason : At the end of gestation period, the maternal pituitary release prolactin which causes uterine contractions.
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 : Commelina shows cleistogamy.
Reason : This reduces chances of inbreeding.
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
Commenlia produce two types of flowers-
(i) Chasmogamous: These flowers are similar to flowers of other species with exposed anthers and stigma.
(ii) Cleistogamous: These flowers do not open at all. In these flowers, anther and stigmalie close to each other. When anther dehisce in the flower buds, pollen grains come in contact with the stigma to effect pollination. Thus, cleistogamous are invariably autogamous as there is no chance of cross- pollen landing on the stigma.
Assertion : Antirrhinum is a good example to understand incomplete dominance.
Reason : Heterozygotes show characteristics of both the alleles.
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 : Presence of large amounts of nutrients in water body causes excessive growth of planktonic algae.
Reason : It is due to biomagnification.
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 : DNA fingerprinting involves identifying differences in specific regions in DNA sequence.
Reason : DNA fingerprinting is the basis of paternity testing.
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 : All pathogens are parasites but all parasites are not pathogens.
Reason : Majority of the parasites confer benefits to the host.
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