Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | A father will never pass the gene for haemophilia to his sons. |
| Reason (R): | Haemophilia is sex-linked (X-linked) recessive traits. |
In the light of the above statements, choose the correct answer from the options given below.
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Which one of the following is not a criterion of genetic material?
| 1. | Should not provide the scope for changes for evolution |
| 2. | Should be able to express itself in the form of Mendelian character |
| 3. | Should be able to generate its replica |
| 4. | Should be stable chemically and structurally |
Which one of the following experiments of Frederick Griffith resulted in the discovery of bacterial transformation?
| 1. | S-stain(heat-killed) → injected in to Mice → Mice lived |
| 2. | S-strain (heat killed) + R-strain(live) →injected in to Mice → Mice died |
| 3. | S-stain → injected in to Mice → Mice died |
| 4. | R-strain → injected in to Mice → Mice lived |
High dose of UV-B causes inflammation of cornea and is called as:
| 1. | UV -blindness | 2. | Colour-blindness |
| 3. | Evening- blindness | 4. | Snow- blindness |
Which of the following come under the "Evil Quarter"?
| (a) Habitat loss and fragmentation | |
| (b) Over-exploitation | (c) Alien species invasion |
| (d) Mortality | (e) Competition |
Choose the correct answer from the options given below:
| 1. | (a), (c) and (d) | 2. | (b), (c) and (d) |
| 3. | (a), (b) and (c) | 4. | (a), (b) and (d) |
Given below are two statements:
| Statement I: | Cellulose is a polymeric polysaccharide |
| Statement II: | The building blocks of cellulose are glucose molecules |
In the light of the above statements , choose the correct answer from the options given below:
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statements I and Statements II |
The process of individuals of the same species that have come into the habitat from elsewhere during the time period under consideration is referred as:
| 1. | Association | 2. | Emigration |
| 3. | Competition | 4. | Immigration |
Match List-I with List-II
| List-I | List-II |
| (a) Haemophilia | (i) Inborn error of metabolism which lacks an enzyme that converts phenylalanine into tyrosine |
| (b) Down's Syndrome | (ii) Sex-linked recessive disorder defect in blood coagulation |
| (c)Phenylketonuria | (iii) Presence of additional copy of X-chromosome (44+XXY) |
| (d) Klinefelter's Syndrome | (iv) Additional copy of chromosome number 21 |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (iv) | (ii) | (i) | (iii) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4 | (i) | (ii) | (iii) | (iv) |
Genetically engineered insulin for human is produced from:
| 1. | Escherichia coli | 2. | Psuedomonas putida |
| 3. | Bacillus thuringiensis | 4. | Rhizobium meliloti |
Removal of apical dominance by decapitation is utilised for:
| 1. | Suppressing the activity of intercalary meristem |
| 2. | Early senescence |
| 3. | Hedge making |
| 4. | Preparing weed-free lawns |
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