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). |
Identify the cytochrome which acts as a mobile carrier for the transfer of electrons between complex III and IV?
| 1. | Cytochrome a | 2. | Cytochrome a3 |
| 3. | Cytochrome b c1 | 4. | Cytochrome c |
Which of the following are not correct regarding decomposition of wastes ?
| (a) | Low temperature inhibits decomposition |
| (b) | Warm and moist environment favours the process |
| (c) | The process is anaerobic |
| (d) | It is slower if detritus is rich in proteins and carbohydrates |
| (e) | Detritus is degraded into simpler inorganic substance by fungal and bacterial enzymes |
Choose the correct answer from the options given below:
| 1. | (b) and (c) only | 2. | (c), (a) and (d) only |
| 3. | (c) and (d) only | 4. | (c), (d) and (e) only |
The ratio of carbon dioxide fixation between C4 plants and C3 plants is :
| 1. | 2:1 | 2. | 2: 3 |
| 3. | 1:1 | 4. | 1:2 |
Which of the following bond is formed as a result of reaction of carboxyl group of one amino acid with amino group of other amino acid with elimination of water?
| 1. | Phosphodiester Bond | 2. | Hydrogen Bond |
| 3. | Glycosidic Bond | 4. | Peptide Bond |
Following crops have been extensively cultivated in CO2 rich atmosphere for higher yield:
| 1. | Sugar beet and Cabbage | 2. | Carrots and Tomatoes |
| 3. | Wheat and Sugar beet | 4. | Tomatoes and Bell pepper |
Which of the following was proved by girdling experiment?
| 1. | Apoplastic movement of water occurs through intercellular spaces |
| 2. | Symplastic movement of water occurs through interconnected protoplast |
| 3. | Xylem is responsible for uptake of water |
| 4. | Phloem is responsible for translocation of food |
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