#Question id: 10522
#SCPH05 I Biotechnology
Mechanical barriers
provide a first line of defence against insect pests and pathogens, these
mechanical barriers developed by plants;
|
COLUMN A |
COLUMN B |
|
A. Thorns |
i) It can be found on the stem and petioles of
roses and are formed by the epidermis |
|
B. Spines |
ii) Found on a lemon tree (Citrus sp.) are
modified branches, as can be seen by their position in the axil of a leaf |
|
C. Prickles |
iii) Found on shoot and leaves of tomato (Solanum
lycopersicum) are derived from epidermal cells |
|
D. Trichomes |
iv) which are characteristic of cacti (Opuntia
spp.) in the New World, are modified leaves |
Match correctly following combination of barrier developed by plants ;
#Question id: 5262
#SCPH05 I Biotechnology
Which of the following characteristics is not true of a plasmid?
#Question id: 3674
#SCPH05 I Biotechnology
Which property is shared by E. coli DNA polymerase I and DNA polymerase III?
#Question id: 18672
#SCPH01 Biochemistry
#Question id: 6966
#I Life Science/ Life Sciences Group – I-V
During gastrulation in the frog, the very first cells to move into the interior of the embryo through the blastopore come from the surface layer of cells in the marginal zone; they will become: