#Question id: 7299
#Unit 5. Developmental Biology
Maintenance of the shoot meristems in adult Arabidopsis plants relies on which of the following mechanisms?
#Question id: 7300
#Unit 5. Developmental Biology
Following
genes regulate flowering, column I represents genes, column II represents
transcription factor family and column III represents functions.
|
Column I |
Column II |
Column III |
|
A. FLOWERING D (FD) |
i. bZIP |
a. Activates flowering downstream of florigen |
|
B. SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 (SOC1) |
ii. MADS |
b. Receptor for florigen |
|
C. FLOWERING LOCUS C |
|
c. Class E homeotic genes |
|
D. SEPALLATA (SEP) |
|
d. Floral repressor |
Which of the following is correct?
#Question id: 7301
#Unit 5. Developmental Biology
An Rajasthani hunter was worried about being attacked by grizzly tigers, so he left the lights in his cabin on all the time. Plants near the cabin flowered a month early. Which of the following best explains this?
#Question id: 7302
#Unit 5. Developmental Biology
Match the following level of microRNAs in Arabidopsis (Column II and III) with their Phases (Column I)
|
Phases (Column I) |
microRNAs (Column II) |
Level of
microRNAs (Column III) |
|
A. Juvenile
vegetative phase |
i. miR156 |
a. Low |
|
B. Adult
vegetative phase |
ii. miR172 |
b. High |
|
C. Reproductive
phase |
|
|
Which of the following combination is correct?
#Question id: 7303
#Unit 5. Developmental Biology
The ‘quartet model’ explains how the protein products of the ABCE-function genes might interact to control floral organ identity. Following statements are based on this model. Which one of them is incorrect?
#Question id: 7304
#Unit 5. Developmental Biology
Which one of the following will be observed when auxin to cytokinin ratio is increased in the culture medium during organogenesis from tobacco pith callus?