(a) Xylem is exarch type
(b) Protoxylem lies towards pith
(c) Xylem is endarch type
From the above statements, choose which one(s) is/are correct?
1. a and b
2. b and c
3. a only
4. c only
Which of the following statements is incorrect?
| 1. | Grana lamellae have both PS I and PS II. |
| 2. | Cyclic photophosphorylation involves both PS I and PS II. |
| 3. | Both ATP and NADPH + H+ are synthesized during non-cyclic photophosphorylation. |
| 4. | Stroma lamellae have PS I only and lack NADP reductase. |
Nowadays, it is possible to detect the mutated gene causing cancer by allowing the radioactive probe to hybridise its complementary DNA in clone of cells, followed by its detection using autoradiography because:
| 1. | mutated gene does not appear on a photographic film as the probe has no complementarity with it. |
| 2. | mutated gene does not appear on a photographic film as the probe has complementarity with it. |
| 3. | mutated gene partially appears on a photographic film. |
| 4. | mutated gene completely and clearly appears on a photographic film. |
In the exponential growth equation Nt =N0ert, e represents :
1. The base of natural logarithms
2. The base of geometric logarithms
3. The base of number logarithms
4. The base of exponential logarithms
In some members of which of the following pairs of families, pollen grains retain their viability for months after release?
1. Poaceae; Solanaceae
2. Rosaceae; Leguminosae
3. Poaceae; Rosaceae
4. Poaceae; Leguminosae
Match List-I with List-II
| List-I | List-II | ||
| (a) | Aspergillus Niger | (i) | Acetic Acid |
| (b) | Acetobacter aceti | (ii) | Lactic Acid |
| (c) | Clostridium bretylium | (iii) | Citric Acid |
| (d) | Lactobacillus | (iv) | Butyric Acid |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (i) | (iv) |
| 2. | (iv) | (ii) | (i) | (iii) |
| 3. | (iii) | (i) | (iv) | (ii) |
| 4. | (i) | (ii) | (iii) | (iv) |
If Adenine makes 30% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?
| 1. | T:30 ; G:20 ; C:20 | 2. | T:20 ; G:25 ; C:25 |
| 3. | T:20 ; G:30 ; C:20 | 4. | T:20 ; G:20 ; C:30 |
Which one of the following is an example of Hormone releasing IUD?
| 1. | Cu 7 | 2. | Multiload 375 |
| 3. | CuT | 4. | LNG 20 |
Which one of the following characteristics is incorrect with respect to cockroaches?
| 1. | In females, 7th - 9th sterna together form a genital pouch. |
| 2. | 10th abdominal segment in both sexes, bears a pair of anal cerci. |
| 3. | A ring of gastric caeca is present at the junction of midgut and hind gut. |
| 4. | Hypopharynx lies within the cavity enclosed by the mouth parts. |
Identify the incorrect pair.
| 1. | Lectins - Concanavalin A | 2. | Drugs - Ricin |
| 3. | Alkaloids - Codeine | 4. | Toxin - Abrin |
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