#Question id: 10522
#Section 6: Plant, Animal and Microbial 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: 10535
#Section 6: Plant, Animal and Microbial Biotechnology
The insect ingests plant tissue containing the fatty acids, an enzyme in the gut conjugates the plant-derived fatty acid to an insect-derived amino acid to form an elicitor, When plants recognize elicitors from insect saliva induces some typical responses such as
a) Increasing Ca2+ levels in the cytosol
and then activate an array of target proteins, such as calmodulin and other Ca2+-dependent
protein kinases
b) In Arabidopsis, a calmodulin-binding
transcriptional regulator called IQD1 was identified as an important mediator
of defense responses against insect herbivory
c) overexpression of IQD1 in Arabidopsis activate the
herbivore activity
d) IQD1 binds calmodulin, a major Ca2+-binding
protein, in a Ca2+-dependent manner and subsequently inhibits the gene involved
in glucosinolate biosynthesis
Which of the following combination from above statements is correct?
#Question id: 612
#Section 2: General Biology
The quaternary structure of hemoglobin changes from the T state to the R state ________.
#Question id: 13200
#Section 6: Plant, Animal and Microbial Biotechnology
#Question id: 15894
#Section 6: Plant, Animal and Microbial Biotechnology