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Practical 7 - Angiosperms Marking Guide Exercise 1: Class Dicotyledons

This document provides a marking guide for a practical exam on angiosperms. It outlines exercises to identify dicots and monocots, draw diagrams of plant structures, and identify plant parts. Students are asked to label diagrams of leaves, flowers, roots, stems and fruits. They must also distinguish characteristics between dicot and monocot flowers. The marking guide provides points for labels, titles, drawings and identifying specimens. The overall goal is to test students' understanding of angiosperm morphology and plant part identification.

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Ditiro Maletsanake
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255 views3 pages

Practical 7 - Angiosperms Marking Guide Exercise 1: Class Dicotyledons

This document provides a marking guide for a practical exam on angiosperms. It outlines exercises to identify dicots and monocots, draw diagrams of plant structures, and identify plant parts. Students are asked to label diagrams of leaves, flowers, roots, stems and fruits. They must also distinguish characteristics between dicot and monocot flowers. The marking guide provides points for labels, titles, drawings and identifying specimens. The overall goal is to test students' understanding of angiosperm morphology and plant part identification.

Uploaded by

Ditiro Maletsanake
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
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Practical 7 – Angiosperms

Marking Guide

Exercise 1: Class Dicotyledons

a) Vegetative Morphology

iii] Diagram 1: One plant specimen showing leaf arrangement and leaf type

Drawing [1]
Labels [leaf arrangement and leaf type] [2]
Title [1]
DM [1]
Total [ 5 marks]

b) Reproductive Morphology

ii] Diagram 2: Half the flower showing the petals/corolla, sepals/calyx and reproductive parts

Labels: Anther & filament [stamen], style, stigma & ovary [pistil-carpel], corolla, calyx and
epicalyx. Any 4 for half a mark each.[2]

Quality: [1]
Title: [1]
DM : [1]
Total mark [5marks]
iii] Type of flower [1]
V] Indicate by letter:

A- Microsporophyte [0.5]
B- Megasporangia [0.5]
C- Megasporagia [0.5]
D- Microsporangia [0.5]
Total [2 marks]

Exercise 2: Class Monocotyledons


Distinguishing characteristics between the dicot and monocot flower (any two)
Part Tecoma Lily
Petals & sepals Visible difference Indistinguishable
No of petals 5 6
No. of stamens 5 6

Total [2 marks]

Exercise 3

C] There are 3 drawings here

1 drawing of the root –any one of these- carrot, radish beetroot, sweet potato
1 drawing of the stem- any of these: onion, Irish potato, ginger, cabbage, cauliflower &
broccoli
1 drawing of a fruit any one of these: cucumber, tomato, green pepper, orange & butternut

Applicable to all the 3 drawings

Title – 1 mark
DM – 1 mark
Labels – 2 marks
Quality – 1 mark
Total [15 marks]
Exercise 3

Students were expected to tell whether the displayed specimens were a fruit, root, flower or stem.
There were more than 10 specimens displayed, which should be identified as in the table below.
This should have been done in tabular form. Mark any 10 specimens each 1 mark.

Specimen Type Plant-part type/modifications


Broccoli Flower
Onion Modified stem buried underground
Sweet potato Modified storage root
Irish potato Underground stem
Carrots Root
Ginger Underground stem
Cabbage Modified stem
Tomato Fruit
Green beans Fruit
Cucumber Fruits
Beet root Root
Green pepper Fruit
Butternut Fruit
Orange Fruit

Total [10 marks]

OVAROLL TOTAL [40]

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