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.
Explanation
a)(i) Phylum of specimens A and D
A- cassava/Sugar/Sweet Potato. Tracheophvta/Angiospermatophyta/Angiospemophyta/Spermatophyta
D-Spirogyra-Thallophyta/Chlorophyta.
(ii) Habitat of specimen A and D:Habitat of A=Land/Grassland/Garden. Habitat of D=Stream/ponds/puddles/ditches.
(b)(i) Type common to all specimens: A sexual/vegetative Reproduction
(ii)
|
Method of Reproduction |
Reason |
|
Cassava-Cutting/stem cutting |
Presence of buds |
|
Plantain-Sucker |
Presence of axillary buds/buds |
|
Runner of grass-runners |
Presence of terminal buds on stem/rhizome |
|
Spirogyra-Fragmentation |
Cells joined end to end on the filaments |
( C) observable differences between specimen B and C (Banana Sucker and Runner of grass)
|
Specimen B (Banana Sucker) |
Specimen C (Runner of Grass) |
|
Erect/vertical stem |
Horizontal/creeping stem |
|
Thick/Swollen stem |
Slender/thin/narrow stem |
|
Internode not conspicuous |
Internode is conspicuous |
