Biology
Answer
a single cell
Reason— A cell is smallest living entity. Therefore, all life starts as a single cell.
An egg is a reproductive cell, mainly in animals but not all organisms start life as an egg. A gene is a unit of heredity made of DNA and is not a complete living unit. Genes are parts of a cell. A chromosome is a structure made of DNA and proteins. It is a component of a cell.
Related Questions
Every organism needs food. Does a cell also need it? Explain very briefly.
Which one of the following cell organelles is correctly matched with its function?
- Ribosomes — Synthesis of proteins
- Mitochondria — Secretion of enzymes
- Plasma Membrane — Freely permeable
- Centrosome — Carries genes
Which one of the following is found both in cells of a mango plant and a monkey?
- chloroplasts
- centrioles
- cell wall
- cell membrane
A plant cell can be identified from an animal cell by the:
- Absence of centrosome
- Presence of cell membrane
- Presence of vacuoles
- None of the above