MCQ
The tissue of highest respiratory activity is
- ✓Meristems
- BGround tissue
- CPhloem
- DMechanical tissue
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$I.$ The medulla is connected to the spinal cord.
$II.$ Medulla contains controlling centers for respiration, cardiovascular reflexes and gastric secretion.
$III.$ Cerebellum has very convoluted surface in order to provide the additional space for more neurons.
$II.$ Phloem in the angiosperm is composed of sieve tube elements, companion cells, phloem parenchyma and phloem fibres
Identify which of the following statement is correct and select the correct option
| Column $I$ | Column $II$ |
| $a.$ Auxin | $(i)$ Root hair formation |
| $b.$ Cytokinin | $(ii)$ Seed development |
| $c.$ Ethylene | $(iii)$ Xylem differentiation |
| $d.$ $ABA$ | $(iv)$ Nutrient mobilisation |