Answer the following briefly:

i) Why don’t Paramecium and jelly fish have a circulatory or respiratory system?

ii) Mention any two functions of plasma proteins.

iii) How does sex determination take place in birds?

iv) Why does a mouse looking for food use upto thirty times more energy than a lizard of the same weight?

i)  Fish have a single circuit for blood flow and a two-chambered heart that has only a single atrium and a single ventricle. The atrium collects blood that has returned from the body and the ventricle pumps the blood to the gills where gas exchange occurs and the blood is re-oxygenated; this is called gill circulation. The blood then continues through the rest of the body before arriving back at the atrium; this is called systemic circulation. This unidirectional flow of blood produces a ________ _____ ______ ______ _______.
________ __________ _____ _____ ___ ______ __________ ___ __________ __________.
_________ _____ _____ _______ ______ ________ __________ ________ ____ _______.
________ __________ _____ ____ ____ _________ ________ __________ ______ _______.
_________ ____ ___ ___ ________ _______ _________ ______ ____ ________ ___ ___.
________ _________ _________ __________ __________ ______ ___.
______ __________ _______ ____ _________.
_____ ________ _________ ______ ___ ____ ___ _____ ______ _________ __________ ___.
__________ _______ ______ ________ ___.
_______ _____ _____ ___ ___.
____ _____ ____ _________ _______ _______ ___ __________ ________ ____.
_________ ________ ______ ____ ______.
___ _____ _____ ____ _________ _____ _____ ________ ______ _____ __________.
_____ __________ _________ __________ __________ _________ ___ _______ __________ __________.
_____ ______ _____ ________ _________ _____ _____ ____ ________ ____.
__________ _____ _______ ___ ____ _____ ___ _______ ______.
___ _________ ____ _________ _______.
__________ _______ ______ _____ __________ ______ _________ _____ ____ _________ ___ ________.
__________ ___ ____ ____ _________ ________.
__________ ______ ___ ______ _______ _______ __________ _______ ___ _____ _______.
________ ___ ____ __________ _________ ____ _________ ___ __________ ________ ______.
________ ______ ______ ______ ___ _________ _____ ____ _______.
________ ___ __________ _________ _______ _________.
___ ________ __________ _________ _________ ______ ______ _____.
__________ __________ ________ ____ _______.
______ ________ ________ _______ _______ ________.
______ __________ ___ ___ _________ _______ _________ ________.
________ _______ ____ __________ ____.
_________ ______ _____ ___ _________ __________ __________ ________ __________ _______.
_________ __________ __________ _________ __________ _______ ____ _______ _______ _____.
________ ___ _____ ______ ________ _____ _________ ____ ________.
______ _______ _____ _________ ___ ______ __________ _________ ____ __________ ____.
______ ________ ___ ________ ___ _________.
________ ____ ________ ________ _____ __________ __________.
________ ________ ______ ________ __________ ________ ___ ___ _____ _____ _____ ___.
____ ________ ______ _______ _________ ____ _______ _____ __________ ______ ______ ____.
__________ __________ _________ _____ ______ __________ ___ ________ _________ ______ _________.
__________ _________ ______ ____ _______ ________ _________ ____ _________.
_________ __________ _______ _________ _____ __________ _________ ______ ____ __________.
___ ______ __________ _____ ____ ________ __________ __________ __________ _______ ____.
______ _________ _______ __________ _________ ________ ______.
_________ ___ _________ _________ ___ ______ _________ _____ ______.
__________ __________ ______ ___ _______ ____ ____ _____ ____ ____.
___ ________ ________ ______ ___ ______ _______ _________ ________.
_____ ___ __________ _______ _____ ____ _________ ___.
_________ ____ __________ __________ ______ ________ _________ ___ ________ _________ ___.
_______ ___ _____ ___ ____ ______ ___.
__________ ___ __________.
Get Full Answer on WhatsApp