(i) A stamen consists of two parts.
(ii) A stalk called filament and a lobe called anther. The anther contains pollen grains.

Molecule is the smallest unit of compound.

(i) Fundamental quantity
(ii) Derived quantity.

The number of electrons or protons is an atom is called the atomic number (Z) of an atom.

An atom is the smallest particle of a chemical element that retains its chemical properties.

The regular hair wash and massage of the scalp will remove the dead skin cells, excess oil and dust.

Hygiene refers to the good habits and the practices which is followed to prevent diseases, maintain good health, especially through cleanliness, consumption of safe drinking water and proper disposal of sewage.

She moves in a straight line with constant velocity.

Elemenls: Iodine and Lithium.
Compounds: Water, Common salt, Sugar and Carbon dioxide.

a) Element:
Simplest form of matter is called an element.
Ex: Sodium Chlorine, Hydrogen and Oxygen.
b) Compound:
A compound is formed by the chemical combination of the atoms of two or more elements in definite proportions.
Ex: Water (H₂O).
c) Metal:
Metals are generally hard and shiny elements.
Ex: Copper, Lead
d) Non-metol:
Non-metals are generally dull and soft.
Ex: Oxygen, Hydrogen, Chlorine.
e) Metalloid:
Metalloids exhibit the properties of both metals and non-metals.
Ex: Silicon, Arsenic, Boron

Raster graphics are created on the basis of pixels. When we enlarge this types of photos, we could see the pictures as rectangular layers or grids.

The process by which pollen grains reach stigma is called as pollination.

Two types of reproduction are,
i) Sexual reproduction.
ii) Asexual reproduction.

Density of gold is 19,300 kg/m³

Area, Volume, Speed, Electric charge and Density.

Nervous system

Carbon

metre/second²

m³

Gas at room temperature