Dibrugarh University| B.SC - (CBCS)| BOTANY - (C - 5)| Question Paper - (Nov/ Dec) - 2022| 3rd Semester
2022
(Nov/Dec)
BOTANY
(Core)
Paper: C-5
(Anatomy of Angiosperms)
Full Marks: 53
Pass Marks: 21
Time: 3 hours
The figures in the margin indicate
full marks for the questions
1. Fill in the blanks of the following: 1x3=3
(a) Companion
cells are always associated with the _____.
(b) Velamen
tissue is found in the roots of ______.
(c) Elongated
tube-like dead cells with tapering end are known as ______.
2. Choose the correct answer from the following: 1×2=2
(a) Histogen
theory was proposed by Hanstein Schmidt / Robert Hooke Esau.
(b) In a dicot
stem, cork cambium originates from epidermis / pericycle / cortex / vascular
bundles.
3. Explain any four of the following: 3×4=12
(a) Importance
of plant anatomy in systematics
(b) Pits and
plasmodesmata
(c) Hydathodes
(d)
Tunica-Corpus theory
(e) Bicollateral
vascular bundles
(f) Epicuticular waxes
4. Differentiate between any three of the following:
4×3-12
(a) Shoot apex
and Root apex
(b) Fibrous and
Sclereids
(c) Open
vascular bundle and Closed vascular bundle
(d) Heartwood
and Sapwood
5. What is stomatal apparatus? Explain the structure and
functions of cells of stomatal apparatus. Give labelled diagrams. 2+8+2=12
Or
With suitable
diagrams, discuss the anatomical structure of dicot stem. 4+8=12
6. With suitable sketches, discuss the anatomical
adaptations of hydrophytes. 4+8=12
Or
Write
explanatory notes on any two of the following: 6×2=12
(a) Adcrustation
and Incrustation
(b) Lenticels
(c) Glandular and
Non-glandular trichomes
***
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