Study Specimens A and B carefully and use them to answer question 1 (a) to 1 (e).
(a) Classify Specimen p no its division and class.
(b) (i) State the types of leaf arrangements in specimens A and B.
(ii) Name the leaf shape of specimens A and B.
(c)(i) State the type of leaf margin in specimen A. (ii) State the types of venation found in the leaves of specimens A and B.
(d)(i) List three observable similarities found in specimen A and E. (ii) In a tabular form, state four observable differences between specimens A and B.
(e) Make a drawing 8-10 cm long of the leaf of specimen A and label fully.
Explanation
(a) Division:Angio-spermatophyta / Angiospermophyta /magniliophyta
(ii) Class: Dicotyledoneae / magniliopsida
(b)(i) Types of leaf arrangements: Specimen A - Alternate/Spiral, Specimen B - Decussate/opposite
(ii) Leaf Shape: Specimen A- Lanceolate/ Sword-Iike, Specimen B - Oval/Ovate.
(c)(i) Type of leaf margin of specimen A: Entire/Smooth/Wavy.
(ii) Types of venation found in Specimens A and B :Specimen A - Net/reticulate, Specimen B - Net/reticulate.
(d)(i)Observable similarities between Specimens A and B:
- Leaves have leaf stalk/petiole/petiolate;
- Leaf stalk/ (d) petiole swollen at the base;
- Leaves contain chlorophyll /are green in color;
- Leaves have entire/smooth margins;
- Leaves have net/reticulate venation;
-Leaves have pointed apex;
- Leaves have prominent midrib;
- Both leaves are simple.
(ii) Observable differences between Specimens A and B:
|
Specimen A (mango) |
Specimen B (Ixora) |
|
- Petiole/leaf stalk is long |
Petiole/leaf stalk is short; |
|
- Leaves have elongated apexlaccuminate/acuminate |
Leaves have short apex/acute; |
|
-Leaves have a narrow lamina/leaf blade |
Leaves have a broad lamina/leaf blade; |
|
- Spiral/alternate leaf arrangement |
Decussate/ opposite leaf arrangement |
|
- Leaves are bigger. |
Leaves are smaller. |
(e) Diagram of Specimen A (leaf)
