#Question id: 10522
#SCPH06 I Botany
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: 10523
#I Life Science/ Life Sciences Group – I-V
Conifer resin ducts, which are found in the cortex and phloem, contain a mixture of diverse terpenoids, which are released immediately upon damage by herbivores such as;
a) monocyclic terpenes like- limonene and terpinolene
b) bicyclic monoterpenes- α-pinene and β-pinene
c) tricyclic sesquiterpenes- longifolene, caryophyllene, and δ-cadinene
d) tetracyclic terpenes- longifolene, tetra-terpinolene terpenoids are incorrect?
#Question id: 10523
#I Life Science/ Life Sciences Group – I-V
Conifer resin ducts, which are found in the cortex and phloem, contain a mixture of diverse terpenoids, which are released immediately upon damage by herbivores such as;
a) monocyclic terpenes like- limonene and terpinolene
b) bicyclic monoterpenes- α-pinene and β-pinene
c) tricyclic sesquiterpenes- longifolene, caryophyllene, and δ-cadinene
d) tetracyclic terpenes- longifolene, tetra-terpinolene terpenoids are incorrect?
#Question id: 10523
#SCPH05 I Biotechnology
Conifer resin ducts, which are found in the cortex and phloem, contain a mixture of diverse terpenoids, which are released immediately upon damage by herbivores such as;
a) monocyclic terpenes like- limonene and terpinolene
b) bicyclic monoterpenes- α-pinene and β-pinene
c) tricyclic sesquiterpenes- longifolene, caryophyllene, and δ-cadinene
d) tetracyclic terpenes- longifolene, tetra-terpinolene terpenoids are incorrect?
#Question id: 10523
#SCPH05 I Biotechnology
Conifer resin ducts, which are found in the cortex and phloem, contain a mixture of diverse terpenoids, which are released immediately upon damage by herbivores such as;
a) monocyclic terpenes like- limonene and terpinolene
b) bicyclic monoterpenes- α-pinene and β-pinene
c) tricyclic sesquiterpenes- longifolene, caryophyllene, and δ-cadinene
d) tetracyclic terpenes- longifolene, tetra-terpinolene terpenoids are incorrect?
#Question id: 10523
#SCPH06 I Botany
Conifer resin ducts, which are found in the cortex and phloem, contain a mixture of diverse terpenoids, which are released immediately upon damage by herbivores such as;
a) monocyclic terpenes like- limonene and terpinolene
b) bicyclic monoterpenes- α-pinene and β-pinene
c) tricyclic sesquiterpenes- longifolene, caryophyllene, and δ-cadinene
d) tetracyclic terpenes- longifolene, tetra-terpinolene terpenoids are incorrect?