11. The bracketed key for determining sub-class, is based on the principle where leads are arranged
12. Which of the following is a stem?
13. Match List-I (Types of root apex organisation) with List-II (Arrangement of cells) and select the correct answer:
List-I
List-II
a. Type A
1. There are two sets of initials, one forming the central cylinder, the other forming the cortex and root cap
b. Type B
2. Meristems are differentiated into three tiers of initials, one forming the central cylinder, the second forming the cortex and the third the epidermis and the root cap
c. Type C
3. All parts of the root arise from a common initial region
d. Type D
4. All tissues are derived either from a single apical cell or from several initials arranged in one tier
| List-I | List-II |
| a. Type A | 1. There are two sets of initials, one forming the central cylinder, the other forming the cortex and root cap |
| b. Type B | 2. Meristems are differentiated into three tiers of initials, one forming the central cylinder, the second forming the cortex and the third the epidermis and the root cap |
| c. Type C | 3. All parts of the root arise from a common initial region |
| d. Type D | 4. All tissues are derived either from a single apical cell or from several initials arranged in one tier |
14. Which of the following is the eatable part of turmeric paInt?
15. The secondary phloem of gymnosperms lacks
16. When fusiform cells are arranged in horizontal rows with the ends of the cells at the same level, it is called
17. The formation of basidia, the dikaryotic mycelium, the dolipore septum with the parenthesomes guarding the pore on both sides and clamp connections are the four diagonistic features of the class
18. The structural elements of almost all bacterial cell walls include
19. In which of the following algae there develops soft, gelatinous areas between the cells, breaking the filament into hormogonia?
20. The exarch position of the xylem in the root
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