SSCE/WASSCE/GCE PAST QUESTIONS AND ANSWERS
OBJECTIVES
The diagram X and Y below, represent the
transverse section of a plant organ in two different types of plants.
Use them to answer question 1 & 2
1.
Which of the following
statement is not true?
A. X and Y are sections of the root
B. X and Y are sections of dicot and
monocot root respectively
C. X and Y have vascular bundles
D. X and Y sections of the stem
2.
Which of the numbered parts
is responsible for conducting water and minerals salts from the soil to the
leaves?
A. 1 B. 2 C. 3 D. 4
3.
In dicotyledonous stem,
each companion cell is founded beside the
A. endodermal cell C. sieve tube
B. xylem vessel D. pericyclic fibre
4.
Which type of the following
cells is thin-walled and living at maturity?
A. Collenchyma C. xylem vessel
B. Sieve tube D. sclerenchyma
5.
A wide pith with a ring of
conducting tissue is characteristic of the root of
A. sunflower C. bean
B. maize D. okra
6.
The major site of photosynthesis
in the leaf is the
A. palisade
parenchyma
B. mesophyll
parenchyma
C. upper epidermis
D. lower epidermis
7.
During respiration, air
circulates round plant tissues via the
A. lenticels C. guard cells
B. stomata D. intercellular spaces
8.
Which of the following is
the youngest plant tissue?
A. Meristem C. Epidermis
B. Phloem D. Xylem
9.
The companion cells are
part of the
A. pericycle C. pith
B. phloem D. xylem
10. Which of the following structures is capable of producing more
tissues in the stem of a herbaceous flowering plant?
A. Epidermis C. Xylem
B. Pericycle D. Cambium
11. Which of the following features are all associate with monocots?
A. Fibrous root
system, branched network of veins and one seed leaf
B. Fibrous root
system, two seed leaves and floral parts in threes
C. One seed leaf,
petals in threes or group of threes and parallel venation of leaves
D. One seed leaf, net-veined leaves and petals in threes or multiple of three
12. Peripherals arrangement of vascular tissues in dicots is a
characteristic of the internal structure of the
A. leaf C. stem
B. petiole D. root
13. Most monocots are easily recognized by their
A. short leaves with
petioles
B. long and
sword-like leaves
C. long and palm
like leaves
D. short with veinlets
14. The veins of the leaf are formed by the
A. vascular bundles C. palisade tissue
B. cambium cells D. spongy mesophyll
15. In the internal structure of plants, a wide pith in the centre is
common to
A. dicot stems and
monocot stems
B. dicot stem and
monocot roots
C. dicot roots and
monocot roots
D. dicot roots and monocot stem
16. In the root vascular system, the stele is directly surrounded by the
A. pericycle C. endodermis
B. cortex D. parenchyma
17. In the transverse of a dicotyledonous stem, the region lying between
the endodermis and the vascular bundle is the
A. parenchyma C. phloem
B. pericycle D. hypodermis
18. Monocot stem differ from dicot stems in that monocot have
A. no cambium C.
fewer vascular bundle
B. no pit D. phloem with parenchyma
19. In a dicotyledonous stem, the zone between the epidermis and the
pericycle is the
A. cortex C. xylem
B. stele D. phloem
20. In plants, the structures that play roles similar to the arteries
and veins of animals are the
A. xylem and phloem
B. root hair and
xylem
C. lenticels and
phloem
D. roots and stems
Answers
|
1. D |
6. A |
11. C |
16. C |
|
2. A |
7. D |
12. C |
17. C |
|
3. C |
8. A |
13. C |
18. D |
|
4. A |
9. B |
14. A |
19. A |
|
5. B |
10. D |
15. A |
20. A |
THEORY
1. (SSCE, 1998 Q2) Describe a named plant tissue that serves for transport.
Solution
Xylem and phloem; Refer to blog content
2.
(SSCE, 2002 Q5) (a) Draw and label a diagram of the transverse section
of a dicotyledonous leaf as seen under the low power of the microscope.
(Presentation of cells not required).
(b) (i) Describe the structure
of the epidermis of a dicotyledonous leaf as seen under the high power of a
microscope.
(ii)
Relate the structural of the epidermis to its functions.
Ø The cuticle prevents water loss.
Ø The tightly packed cells protects the internal tissues from
injury.
Ø The stomata allows for gaseous exchange and guard containing chloroplast, carry out
photosynthesis as well as controlling opening and closing of the stoma.
Ø It is transparent which allows light to reach the mesophyll tissue
for photosynthesis.
3. (SSCE 2003 Q4) (a) Draw and label a diagram of the transverse section of a dicotyledonous leaf.
Solution
Refer to blog content
4.
(SSCE 2005 Q3) (a) Name the four primary tissues of the stem of a
dicotyledonous plant.
(b) Describe the structure of each of the tissues you have named in (a) as seen in transverse section.
Solution
(a) primary tissues of dicotyledonous stem
·
Epidermis ● Cortex
·
Vascular
tissues ● Pith
(b)Refer to blog content
5. (SSCE 2008 Q5) (b) In a tabular form, state six vegetative difference between dicotyledonous and monocotyledonous plant.
Solution
Refer to blog content
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