Biology - Cell & Tissues Questions for SSC CGL (with Answers)

Answer: D. Cardiac muscle

Cardiac muscle is involuntary, branched and striated, and is found only in the heart wall.

Answer: C. Ribosomes

Ribosomes are the sites of protein synthesis, reading mRNA to join amino acids.

Answer: D. Neuron

The neuron (nerve cell) is the basic unit of the nervous system that carries impulses.

Answer: D. 46

A normal human somatic cell has 46 chromosomes, arranged as 23 pairs.

Answer: C. Mitochondria

Mitochondria are called the powerhouse because they produce ATP through cellular respiration.

Answer: D. Food prepared in the leaves

Phloem translocates food (mainly sugars) made in the leaves to other parts of the plant.

Answer: B. Cell wall

Plant cells have a rigid cellulose cell wall outside the membrane, which animal cells lack.

Answer: A. Meiosis

Meiosis halves the chromosome number, producing haploid gametes for sexual reproduction.

Answer: B. Cellulose

Plant cell walls are mainly composed of cellulose, a polysaccharide of glucose.

Answer: A. Connective tissue

Blood is a fluid connective tissue: cells suspended in a liquid matrix (plasma).

Answer: C. Tendon

Tendons are strong, inelastic fibrous tissues that attach skeletal muscles to bones.

Answer: A. Bone to bone

Ligaments are elastic connective tissues that join one bone to another at joints.

Answer: A. Apical meristem

Apical meristem at root and shoot tips divides actively and causes growth in length.

Answer: D. Robert Hooke

Robert Hooke coined the term 'cell' in 1665 after seeing box-like compartments in cork.

Answer: B. Robert Brown

Robert Brown discovered the nucleus in 1831 while studying orchid cells.