Question

two characteristics of each one of following

mollusca , phanerogams, ptridophyta, bacteria, reptilia, protista.

Answer 1

Mollus have soft and unsegmented body with reduced coelum. sexual reproduction and direct development.

Protista is a unicellular and exhibit eukaryotic cell organization and reproduce both sexually and asexually.

Class Reptilia:

• First terrestrial animals living in warmer region
• Lay eggs with thick coverings on land.
• Clod blooded
• Body is divisible into head, neck & Trunk. Tail is developed in some and reduced in others.
• Body is covered with epidermal horny scales
• Respiration through lungs
• Three chambered heart except crocodile. (It has 4 chambered heart)
• Paired limbs are present except snake( reduced or absent)