Assertion Hydatid vesicle is the characteristic of Echinococcus for absroption
Hydatid cyst can remain for several years within the human body.

in case o human beings hydatid cysts occur over

in case of human beings hydatid cysts occur over

in case of human beings hydatid cysts occur over

Assertion : Ginkgo biloba is living fossil. Reason : Organisms which have persisted and remain unchanged for the past several million years while their relative disappeared.

Assertion (A):Ginkgo biloba is a living fossil. Reason (R) Ginkgo biloba has peristed and remain unchanged for the past several million years,while its relatives disappeared.

Assertion (A): If the quantity of hormones secreted gets deviated from its normal range, our body gets affected severely. Reason (R): The function of hormone is to stimulate or inhibit the targeted organ to act so that homeostasis of our body can be maintained.

Ultrasonic and Infrasonic Waves: The sound having frequency 20 Hz to 20 KHz is called audible sound Human ear cannot hear sound of frequencies lying outside this range. The limits of audibility of sound vary from individual. Generally the upper limit decreases with increase of age of individual, usually and people can not hear sound of frequency more than 15 kHz. Sound of frequencies below 20 Hz are called infrasonics, while frequencies beyond 20 kHz are called ultrasonics. Ultrasonics can be heard by dogs, cat bats etc. Bats detect the path by means of ultrasonics. Ultrasonics can be used for diagnosis of tumour and other abnormalities within our body. This is known as ultrasonography. Ultrasonics are used to curve various diseases and to measure depth of oceans to detect submarines.Ultrasonics are used for navigation by