The amount of nutrients, such as carbon, nitrogen, phosphorus, and calcium present in the soil at any given time, is referred as:
1. Standing state
2. Standing crop
3. Climax
4. Climax community
Match List - I with List-II.
| List-I | List-II | ||
| (a) | Cohesion | (i) | More attraction in liquid phase |
| (b) | Adhesion | (ii) | Mutual attraction among water molecules |
| (c) | Surface tension | (iii) | Water loss in liquid phase |
| (d) | Guttation | (iv) | Attraction towards polar surfaces |
Choose the correct answer from the options given below.
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (ii) | (i) | (iv) | (iii) |
| 3. | (ii) | (iv) | (i) | (iii) |
| 4. | (iv) | (iii) | (ii) | (i) |
When gene targetting involving gene amplification is attempted in an individual's tissue to treat disease, it is known as:
1. Molecular diagnosis
2. Safety testing
3. Biopiracy
4. Gene therapy
Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as
1. Homosporous
2. Heterosporous
3. Homosorus
4. Heterosorus
Which of the following plants is monoecious?
1. Marchantia polymorpha
2. Cycas circinalis
3. Carica papaya
4. Chara
What is the role of RNA polymerase III in the process of transcription in eukaryotes?
1. Transcribes precursor of mRNA
2. Transcribes only snRNAs
3. Transcribes rRNAs (28S, 18S and 5.8S)
4. Transcribes tRNA, 5s rRNA and snRNA
Which of the following statements is correct?
1. Organisms that depend on living plants are called saprophytes.
2. Some of the organisms can fix atmospheric nitrogen in specialized cells called sheath cells.
3. The fusion of two cells is called Karyogamy.
4. Fusion of protoplasms between two motile on non-motile gametes is called plasmogamy.
Match Column-I with Column- II.
| Column I | Column II | ||
| (a) | Nitrococcus | (i) | Denitrification |
| (b) | Rhizobium | (ii) | Conversion of ammonia to nitrite |
| (c) | Thiobacillus | (iii) | Conversion of nitrite to nitrate |
| (d) | Nitrobactèr | (iv) | Conversion of atmospheric nitrogen to ammonia |
Choose the correct answer from the options given below.
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (ii) | (iv) | (i) | (iii) |
| 4. | (i) | (ii) | (iii) | (iv) |
Plasmid pBR322 has a PstI restriction enzyme site within gene ampR that confers ampicillin resistance. If this enzyme is used for inserting a gene for -galactoside production and the recombinant plasmid is inserted in an E.coli strain, then:
| 1. | it will lead to the lysis of host cells. |
| 2. | it will be able to produce a novel protein with dual abilities. |
| 3. | it will not be able to confer ampicillin resistance to the host cell. |
| 4. | the transformed cells will have the ability to resist ampicillin as well as produce -galactoside. |
| Column I | Column II | ||
| (a) |  |
(i) | Brassicaceae |
| (b) |  |
(ii) | Liliaceae |
| (c) |  |
(iii) | Fabaceae |
| (d) |  |
(iv) | Solanaceae |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iv) | (ii) | (i) | (iii) |
| 3. | (iii) | (iv) | (ii) | (i) |
| 4. | (i) | (ii) | (iii) | (iv) |
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