1) The bones are moved by alternate contractions and relaxations of two sets of muscles.2) The bone joints are of various kinds depending on the nature of joints and direction of movement they allow.3) Strong muscles and light bones work together to help the birds fly. They fly by flapping their wings.4) Fish swim by …
This framework of our body is called the skeleton We can have some idea about the shape and number of bones in some parts of our body by feeling them. One way we could know this shape better would be to look at X ray images of the human body. Sometimes when we are hurt, …
A hinge joint allows the movement of bones in only one direction i.e. forward and backward. In a hinge joint, the movement of bones is restricted to one direction by the shape of the ends of the bones which form the joint, and by the ligaments which hold the bones together at the joint.
the joint where our neck joints head and allow the movement of forward, backward, left and right direction. It is moreover like a cylindrical bone moving in a ring
Ball and socket joint is a movable joint. In this a bone with round head fits into hollow space of another bone. This makes the bone to rotate freely. . For example, bones of hip and shoulder can move in all directions due to ball and socket joint
The place where two or more bones meet in the skeleton is called a joint. Most of the joints allow the bones to move. The amount of movement depends on the type of joint. We can move our head ,arms ,hands ,legs and feet because all these parts have bone joints.
Ovary is the swollen (lowest) part of the pistil. Ovary encases ovules (one or many) that are egg-like structures. Ovules contains the female sex cells and develops into a seed after fertilization. An ovule is a structure found inside the ovary of plants. Integuments are the two layers which cover the internal structures of the ovule.
A gynoecium is the female reproductive organ of the flower and referred as a pistil. It consists of stigma, style and an ovary. A stigma is present at the tip of the style and may have many lobes. It is a hairy structure and secret a sugary substance.
An androecium is the male part of the flower which is composed of a long filament and an anther attached to its tip.
The green, leaf like parts in the outermost circle of a flower are called sepals. The sepals protect the flower when it is in the form of a bud in the initial stage . sepals may either be separate from one another or joint together.
