HIGHER PLANTS (BOTS2202)

Biological Science - BS

Semester: Second Semester

Level: 200

Year: 2019

Answers (200 )
REPUBLIC OF CAMEROON THE UNIVERSITY OF BAMENDA
Peace-Work-Fatherland
P. O. BOX 39 Bambili
School/Faculty: _SCIENCE____________ Department:_Biological Sciences
Lecturer(s): _Dr Nouck/ Dr Tacham
Course Code: _BOTS2202_______ Course Title: Higher Plants
Date: _6
th
July 2019______Halls: __Asanji I ________Time: 10:30-12:30
Instructions: Answer all questions using the appropriate words and short sentences
Section A: 35 Marks.
1) Draw and explain the process of double fertilization (3 + 4 = 7 marks)
2) Pollination: Give the definition, different types, advantages and disadvantages (0.5 + 0.5 + 1+1=3 marks)
3) List and draw the different types of placentation (0.5 x 6 = 3 marks)
4) Differentiate by Drawing a beans seed and corn seed (1+1 = 2 marks)
5) Differentiate by drawing a true (mango) and false (apple) fruit (1.5 + 1.5 = 3 marks)
6) Draw the following modified tap root and adventitious root systems (0.5 x 6 = 3 marks)
a) Fusiform, b) Napiform, c) Conical, d) Tuberous, e) Nodulose and 1) Prop roots
7) Draw the following underground and aerial modified stem (0.5 x 6 = 3 marks)
g) Rhizomes, h) Bulb, i) Corms, j) thorn k) stolon and i) prop roots
8) Differentiate by drawing a simple and compound leaf; list two main differences (1+2 = 3 marks)
9) Draw the following:
> leaf arrangement: in) alternate, n) opposite and o) whorled (1+1+1 = 3 marks);
> compound leaves: p) Bipinnate and q) palmate (1+1 = 2 marks);
> leaf venation: r) palmate, s) parallel and t) pinnate (1+1+1 = 3 marks).
Section B; 35 Marks
1.
Briefly explain the evolutionary characteristics of that exist within the Lycophytes with diagrams where
necessary. 5 marks
2.
List the 5 major genera that constitute the Lycopodiaceae. 5 marks
3.
Define the following terminologies: a) Endospory (b) Ligule (c) Isomophic (d) Strobili (e) Fascicle. 10 marks
4.
Stale the major differences that exist between the Polypodiaceae and Pteridaceae. 2 marks
5.
Using a diagram only, illustrate the following; (a) Vertical lengthwise section of a fern prothallium. 5 marks
6.
The leptosporangia are an aggregate of clusters of sori covered by a flap of tissue called indusium.
(a)
Why are they considered unique among vascular plants? 2 marks
(b)
Briefly explain why they are considered an important adaptation in the ferns. 6 marks
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