MCQ
Leaf abscission, fruit fall, and bud dormancy occurs by which phytohormone?
- AAuxin
- BCytokinin
- CGibberellins
- ✓Abscisic acid
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$I.$ Gene therapy is a genetic engineering technique used to treat diseases at molecular level.
$II.$ Calcitonin is medically useful recombinant product in the treatment of infertility.
$III.$ Bt toxin is a biodegradable insecticide obtained from Bacillus thuringiensis.

| Total animal | |
| (l) Unisexual animal - | 3 |
| (II) True fish - | 2 |
| (III) Coelomate animal - | 4 |
| (IV) Vertebral column bearing animal - | 1 |
$R$- They are the most important vegetative organ for photosynthesis