Question

. Which of the following represents a single cell? *
1 point
a) Egg of a hen
b) Human
c) Young ones of dogs
d) Cork

Answer 1

Answer:

a)Egg of a hen

Explanation:

The chicken egg is unicellular until it is fertilized.

Then as the fertilized begins to devide or grow it becomes multicellular.

Answer 2

(a) Egg of a hen represents a single cell.

Explanation:

• The chicken egg is unicellular until it is fertilized.
• Then as the fertilized begins to divide or grow it becomes multicellular.
• A Hen egg is a single cell just like the ostrich egg which is really big in size. But it becomes multicellular after it hatches to form a chick then the chick will have a group of cells.
• Before the fertilization or you can say when the egg is unfertilized then the egg contains a single celled haploid ovum.
• The egg is a single cell laid down by the fernale when fertilized by the single cell or nucleus of the male sperm it remains a single cell but then has its full complement of chromosomes and genes.
• The yolk of an ostrich egg is one cell though it is rather specially adapted.
• All the nucleotide material is contained in a small volume at the edge of the yolk.
• The bulk is a supply of raw material that the cells of the growing embryo use to assemble the cells of the ostrich chick.
• Single cells are also known as unicellular organisms.Single cell organisms are microscopic and composed of a single cell, unlike multicellular organisms that are made of many cells.
• Some of the examples of single cell organisms are prokaryotes, most protists and some fungi.
• Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism while multicellular organisms use many different cells to function.
• Unicellular organisms include bacteria, protists and yeast.