Question

Complete second pair according to the relationship in first pair:
1) Cranial Nerves : 12 pairs : : Spinal Nerves : _
2) Blood Clotting : Calcium : : Tubular Secretion : _
3) Chromosome : Nucleus : : Centrosome : _
4) Spleen : Blood Reservoir : : Bone Marrow : _
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Answer 1

Answer:

1. spinal nerves: 31 pair

2. damaged gland

3. centrosome: cell

4. bone marrow: give strength to the bones.

Explanation:

it is helpfull.

Answer 2

Explanation:

Cranial Nerves:12 pairs ::Spinal Nerves:31

Blood Clotting : Calcium :: Tubular Secretion : Metabolic waste

Chromosome : Nucleus :: Centrosome : Cytoplasm(inside cell)

Spleen : Blood Reservoir :: Bone Marrow : Producer of red blood cells(RBCs)

I think that Biology is your favourite subject, isn't ?

By the way are you from class 10th because I'm in 10th and these chapters are in my biology textbook