Differentiate between direct and indirect development.

Hint: Direct development can be defined as the presence of lots of nourishing yolks in the embryo that can result in the development of a miniature adult. Indirect development can be referred to as the presence of a little yolk inside the embryo which will result in the development of the larva that can be fed by the young adults. Mammals have a very little yolk but it can nourish the embryo by the placenta.

Step by step answer:The difference between direct and indirect development is as follows:



Note: This is a part of reproductive classification. This classification is done on the basis of eggs that are laid by different animals. Based on the quantity of yolk present inside the egg, the eggs can be divided into three groups – Microlecithal eggs, Mesolecithal eggs, and Macrolecithal eggs. Similarly, based on the distribution of yolk of the egg in the cytoplasm, these eggs are classified in four types – Homolecithal eggs, Telolecithal eggs, Mesolecithal eggs, and Centrolecithal eggs.