In desert plants, rate of water loss gets reduced due to the presence of

Correct Answer: A

Rationale: Cuticle is waxy layer of aerial parts of a plant with cutin, secreted by the epidermis and prevent water loss.

Correct Answer: A

Rationale: Skeletal muscle has striations, cylindrical cells, and multiple nuclei, unlike cardiac (branched, single nucleus) or smooth muscle (no striations).

Correct Answer: A

Rationale: A compound consists of different elements (atoms) chemically bonded, unlike elements with one atom type.

Correct Answer: B

Rationale: Molecular weight is the sum of atomic weights of all atoms in a molecule.

Correct Answer: B

Rationale: The nucleus is the largest organelle, housing DNA and controlling cell activities.