Which one of the following process is responsible for the release of \(N_2\) in the atmosphere?
1. Industrial Nitrogen fixation
2. Ammonification
3. Denitrification
4. Biological nitrogen fixation
What will be the ploidy of endosperm of a seed produced after crossing tetraploid female plant with tetraploid male plant?
| 1. | Pentaploid | 2. | Hexaploid |
| 3. | Diploid | 4. | Triploid |
Which one of the following structures is haploid in its ploidy level?
1. Primary Endospore Nucleus
2. Microspore Mother cell
3. Protonemal cell of a moss
4. Primary endosperm nucleus in dicot
Match List-I with List-II
| List-I | List-II | ||
| (a) | ETS complex-I | (i) | Cyt be1 |
| (b) | ETS complex-II | (ii) | Cyt a,a3 and 2 copper centres |
| (c) | ETS complex III | (iii) | NADH dehydrogenase |
| (d) | ETS complex-IV | (iv) | Ubiquinone and FADH dehydrogenase |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (iii) | (iv) | (i) | (ii) |
Species Area relationship is described by the following equation.
log S = log C + Z log A
where Z is:
| 1. | Area | 2. | Species richness |
| 3. | Slope of the line | 4. | Y-intercept |
Which of the following plants possesses the placentation of ovules borne on central axis with no septa?
| 1. | Lemon | 2. | Pea |
| 3. | China-rose | 4. | Primrose |
Which of the following physical properties of water is/are responsible for providing water, the high tensile strength and high capillarity during ascent of sap in the plants?
1. Surface tension and cohesion
2. Cohesion, adhesion and surface tension
3. Cohesion only
4. Adhesion and cohesion
Choose the mismatched pair of leaf character with its example:
| 1. | Palmately compound - Alstonia |
| 2. | Alternate Phyllotaxy - China-rose |
| 3. | Leaf tendril - Pea |
| 4. | Opposite phyllotaxy - Calotropis |
Which of the following is the correct equation of exponential growth?
| 1. | \(N_t = N_0 ~e^{rnt}\) | 2. | \(N_t = N_0 ~e^{rpt}\) |
| 3. | \(N_t = N_0 ~e^{rst}\) | 4. | \(N_t = N_0 ~e^{rt}\) |
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R)
| Assertion (A): | Restriction enzyme is a type of endonuclease. |
| Reason (R): | Restriction enzyme cuts the two stands of DNA at specific positions within the DNA. |
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). |
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