The process of new blood vessel formation is called: MCQ with Answer and Explanation

Explanation:
Primary succession begins on lifeless, barren substrates like bare rock, where no soil exists initially. Secondary succession occurs in areas where an existing community has been destroyed by disturbances like forest fires, floods, or logging, but soil remains. A climax community is the final, stable, and self-perpetuating stage of ecological succession, in equilibrium with the environment. Thus, statements 1 and 2 are correct.

Explanation:
BCG (Bacille Calmette-Guérin) is a live attenuated vaccine derived from Mycobacterium bovis, used to protect against tuberculosis, especially in children. DPT is for diphtheria, pertussis, tetanus; MMR for measles, mumps, rubella; OPV is oral polio vaccine. BCG is often administered at birth in endemic regions.

Explanation:
The human endoskeleton consists of 206 bones and cartilage at joints and in structures like the nose, ears, and intervertebral discs. Bone is mineralized connective tissue, cartilage is a specialized connective tissue. Chitin is found in arthropod exoskeleton and fungal walls, keratin is a protein in skin, hair, nails. The skeleton provides support, protection, and movement.