The red, orange and yellow colours of leaf are due to carotenoids.

Correct Option: D

The red, orange and yellow colours of leaf are due to carotenoids.

Vitamin B₁₂ contains cobalt. Deficiency of Vitamin B₁₂ causes pernicious anaemia and inflammation of tongue and mouth. Vitamin A, Vitamin C and Vitamin E are anti-oxidants.

Correct Option: A

Vitamin B₁₂ contains cobalt. Deficiency of Vitamin B₁₂ causes pernicious anaemia and inflammation of tongue and mouth. Vitamin A, Vitamin C and Vitamin E are anti-oxidants.

The smallest objects that can be seen with unaided eye are about 0.1 mm long, which is equal to 100 micrometres. Micron (u) is an alternate name of micrometre.

Correct Option: C

The smallest objects that can be seen with unaided eye are about 0.1 mm long, which is equal to 100 micrometres. Micron (u) is an alternate name of micrometre.

Bryophytes are simple low growing plants, anchored to the ground or to tree bark by tiny filamentous rhizoids.

Correct Option: B

Bryophytes are simple low growing plants, anchored to the ground or to tree bark by tiny filamentous rhizoids.

Animal adapted to life in air are called arboreal. Arboreal means living in or connected with trees.

Correct Option: B

Animal adapted to life in air are called arboreal. Arboreal means living in or connected with trees.