Deficiency of __________ causes loss of appetite and poor growth?

lightest metal is__________?A. Lithium
B. Sodium
C. Magnesium
D. Aluminium

The lightest or least dense metal that is a pure element is lithium, which has a density of 0.534 g/cm3. This makes lithium nearly half as dense as water, so if lithium was not so reactive, a chunk of the metal would float on water.

 

Which bird has legs but can’t walk ?

A. Loons
B. Grebes
C. Hummingbirds
D. None of these

What are the three subatomic particles of an atom?

A. Protons,Neutrons & Electrons
B. Protons,Nucleus & Electrons
C. Protons,Nucleus & Elements.
D. Elements,Nucleus & Protons

Which group of animals has heterogametic females?

A. Domestic fowl
B. Earthworm
C. Rabbit
D. None

Intrinsic Semi-conductor is also known as__________?

A. Impure-Conductor
B. Pure-Conductor
C. Simple Conductor
D. None of these

 

In human body there are_________________kinds of bones?

A. 3
B. 4
C. 5
D. 6

TYPES OF BONES:

Bones of the skeleton can be grouped into the following major types: long, short, flat, and irregular. Each type has a somewhat different construction pattern.

1. Long Bones: The basic structure of a long bone is illustrated in figure 4-1. Example: femur.
2. Short Bones: The short bones, such as those of the wrist and feet, have a thin layer of compact bone surrounding an inner mass of spongy bone. Example: carpal bones.
3. Flat Bones: The flat bones are constructed with two plates of compact bone, which enclose between them a layer of spongy bone. The spongy bone is richly supplied with blood vessels and red marrow. Example: the cranial frontal bone.
4. Irregular Bones: The irregular bones are those that do not fit into the three categories above. Example: a vertebra.