Question
Distinguish between : Cranial nerves and Spinal nerves
| Cranial nerves | Spinal nerves |
| 1. Nerves arising from the brain are cranial nerves. | 1. Nerves arising from the spinal cord are spinal nerves. |
| 2. There are 12 pairs of cranial nerves. | 2. There are 31 pairs of spinal nerves. |
| 3. Cranial nerves are of three types, viz sensory, mixed and motor. | 3. All spinal nerves are of mixed type. |
| 4. Cranial nerves are responsible for cerebral reflexes. | 4. Spinal nerves are responsible for spinal reflexes. |
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| Respiratory capacities | Respiratory volumes |
| (1) Residual volume (RV) | (a) 500 ml |
| (2) Vital capacity (VC) | (b) 2000 – 3000 ml |
| (3) Tidal volume (TV) | (c) 1100 – 1200 ml |
| (4) Inspiratory reserve volume (IRV) | (d) 4100 – 4600 ml |

| Column I | Column II |
| (1) Parturition | (a) Attachment of embryo to endometrium |
| (2) Gestation | (b) Release of egg from Graafian follicle |
| (3) Ovulation | (c) Delivery of baby from uterus |
| (4) Implantation | (d) Duration between pregnancy and birth |
|
S. No
|
A
|
B
|
|
(a)
|
Cellular endosperm
|
Free- nuclear endosperm
|
|
(b)
|
Free-nuclear endosperm
|
Cellular endosperm
|
|
(c)
|
Helobial endosperm
|
Cellular endosperm
|
|
(d)
|
Free-nuclear endosperm
|
Helobial endosperm
|
| Column I (Phenomena) | Column II (Effect) |
| (1) Eutrophication | (a) Soil erosion |
| (2) Biomagnification | (b) Prevention of extinction |
| (3) Conservation | (c) Accumulation of non-biodegradable substance |
| (4) Deforestation | (d) Death of aquatic ecosystem |
| Column A (Mechanism) | Column B (Type of pollination) |
| (1) Geitonogamy | (a) Thea |
| (2) Herkogamy | (b) Gloriosa |
| (3) Self-sterility | (c) Cucurbita |
| (4) Protogyny | (d) Calotropis |