Match the placental types Column-I with their examples Column-II.
| Column-I | Column-II | ||
| (a) | Basal | (i) | Mustard |
| (b) | Axile | (ii) | China rose |
| (c) | Parietal | (iii) | Dianthus |
| (d) | Free central | (iv) | Sunflower |
Choose the correct answer from the following options:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iv) | (ii) | (i) | (iii) |
| 4. | (iii) | (iv) | (i) | (ii) |
Bicarpellary ovary with obliquely placed septum is seen in:
1. Brassica
2. Aloe
3. Solanum
4. Sesbania
Which of the following is made up of dead cells?
1. Collenchyma
2. Phellem
3. Phloem
4. Xylem parenchyma
Phloem in gymnosperms lacks:
1. Both sieve tubes and companion cells
2. Albuminous cells and sieve cells
3. Sieve tubes only
4. Companion cells only
| I: | semi-autonomous organelles. |
| II: | formed by the division of pre-existing organelles and they contain DNA but lack protein-synthesizing machinery. |
Which one of the following options is correct?
2. I is true but II is false
3. Both I and II are false
4. Both I and II are correct
Select the wrong statement:
| 1. | Bacterial cell wall is made up of peptidoglycan |
| 2. | Pili and fimbriae are mainly involved in the motility of bacterial cells |
| 3. | Cyanobacteria lack flagellated cells |
| 4. | Mycoplasma is a wall-less microorganism |
Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called the quiescent stage . This process occurs at the end of:
1.
2. S phase
3.
4. M phase
Emerson’s enhancement effect and red drop have been instrumental in the discovery of?
| 1. | two photosystems operating simultaneously |
| 2. | photophosphorylation and cyclic electron transport |
| 3. | oxidative photophosphorylation |
| 4. | photophosphorylation and non-cyclic electron transport |
| 1. | C4 | 2. | CAM |
| 3. | Nitrogen –fixer | 4. | C3 |
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