Study specimens A, B C and D carefully and use them to answer questions 1(a) to 1(d). (a)(i) Name tne phylum to which each of specimens A and D belong. (ii)...

Study specimens A, B C and D carefully and use them to answer questions 1(a) to 1(d).

(a)(i) Name tne phylum to which each of specimens A and D belong. 

(ii) Name the habitat or each Specimens A and D.

 (b)(i) Name the type of reproduction common to specimens A, B, C and D.

(ii) List the method of reproduction of each of specimens A, B,C and D giving one reason each for the method of reproduction listed.

(c) In a tabular form, state three observable differences between specimens B and C.

 (d) Make a drawing 8-10 cm long of specimens A to show the essential parts and label fully.

Test of Practical Knowledge: Specimens A, B, C and D

(a)(i) Phylum

Specimen	Phylum
A (cassava stem cutting)	Tracheophyta, also acceptable as Spermatophyta or Angiospermophyta
D (Spirogyra)	Thallophyta, also acceptable as Chlorophyta

(a)(ii) Habitat

• Specimen A: terrestrial habitat, for example farmland, garden or grassland.
• Specimen D: fresh water, for example ponds, streams, puddles or ditches.

(b)(i) The type of reproduction common to specimens A, B, C and D is asexual reproduction, specifically vegetative reproduction.

(b)(ii) Methods of reproduction and reasons

Specimen	Method	Reason
A, cassava	Stem cutting	It has nodes bearing axillary buds which sprout to form new plants.
B, plantain or banana	Suckering	Buds at the base develop into suckers.
C, grass	Runner or stolon	The horizontal stem has nodes which root and produce new shoots.
D, Spirogyra	Fragmentation	Its cells are joined end to end in a filament which can break into fragments, each capable of growth.

(c) Observable differences between specimens B and C

Feature	Specimen B: plantain sucker	Specimen C: grass runner
Direction of stem	Erect or vertical	Horizontal or creeping
Thickness of stem	Thick and swollen	Slender and thin
Internodes	Not conspicuous	Conspicuous

(d) Drawing of specimen A, cassava stem cutting

Scale drawing length: 8-10 cm. Essential parts are fully labelled.

Read lesson note on Classification (WAEC)

Read lesson note on Reproduction (JAMB)