What is agricultural importance of earthworms?
Burrowing activity of earthworms permits greater penetration of air into the soil, and improves drainage capacity of the soil. It also enables root to grow downwards through the soil more easily. Mixing and churning of the soil is brought about when earth which contains inorganic particles is brought up to the surface from lower regions.
What are most common arthropods, on the earth?
Insects (cockroaches, grasshoppers, butterflies, mosquitoes) are most. common arthropods, on the earth.
Why arthropods are believed to have common origin with annelids?
The arthropods are believed to have common origin with annelids because both have some common characteristics such as segmented body, appendages and cuticle.
What are jointed appendages?
These are the legs found in the members of Phylum Arthropoda which are composed of pieces attached with moveable joints.
What is haemocoel?
The body cavity of arthropods is called haemocoel because blood flows through it.
1 thought on “Chapter 10 (Kingdom Animalia) F.Sc 1st Year Biology Helping Notes”
I need to red this book in my smartphone in every time when I am free….