Let's Do Science 5 – Text Book A

Page 28

Reproduction All organisms are able to reproduce. This means they are able to make more of their own kind. There are two main types of reproduction – sexual reproduction and asexual reproduction.

le du ca

Sexual reproduction involves two parents. Each parent produces a special reproductive cell which join together to form a single cell. This process is called fertilization. The offspring that develops from the fertilized cell will have characteristics from both parents.

Asexual reproduction involves only one e parent. parent nt The offspring are genetically identical ical cal to the ms reproduce eproduce parent. Most unicellular organisms asexually. Bacteria and many other unicellular organisms reproduce by dividing ding into two identical daughter cells.

AB

Activity 1.5

Parameciums reproduce by dividing into two identical daughter cells.

Go Online!

Some simple organisms, such as yeast and freshwater hydra, reproduce asexually by budding. Find out more on the NGScience website. QuickCode: D6S9

Lions and other mammals reproduce sexually.

7


Turn static files into dynamic content formats.

Create a flipbook
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.