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Apical meristem – Helps to increase the length of root and stem.
Lateral meristem – Helps to increase the girth of stem and root. Seen only in dicot plants.
Intercalary meristem – Helps to increase the length of the stem. Seen above the nodes of monocot plants.

Apical meristem – Helps to increase the length of root and stem.
Lateral meristem – Helps to increase the girth of stem and root. Seen only in dicot plants.
Intercalary meristem – Helps to increase the length of the stem. Seen above the nodes of monocot plants.

Hinge joint – A type of joint that functions much like the hinge on a door, allowing bones to move in one direction back and forth with limited motion along other planes. The fingers, toes, elbows, knees, and ankles contain hinge joints.

Paramecium – Cilia enable movement of Paramecium in water.
Euglena – Locomotory structures of the Euglena are flagellum.
Earthworm – Circular muscles and longitudinal muscles. Locomotion in earthworm is
effected by the rhythmic contraction and relaxation of these muscles.

If the direction of plant movement is not in accordance with the stimulus, it is called nastic movement. eg. Movement in Mimosa plant (Touch-me-not plant)

If the direction of plant movement is in accordance with the direction of stimulus it is called tropic movement.

Number of daughter cells formed after mitosis – 2

Number of daughter cells formed after meiosis – 4

Cytokinesis:-

In plant cell, small vesicles are formed between the daughter nuclei. Small vesicles join together to form cell plate. The cell plate extends to both sides and joins with the plasma membrane.
In animal cell, the plasma membrane invaginates at the centre of the cell and divides into 2 daughter cells.

Skeletal muscle (Striated muscle) – Make voluntary movements possible.
Smooth muscle (Nonstriated muscle) and Cardiac muscle – Make involuntary movements possible.

Human skeleton – 206 bones
Axial skeleton – 80 bones
- Skull – 22
- Sternum – 1
- Ribs – 12 x 2 = 24
- Vertebral column – 33
Appendicular skeleton – 126 bones
- Pectoral girdle – 2 x 2 = 4
- Bones in forelimb – 30 x 2 = 60
- Bones in hind limb – 30 x 2 = 60
- Pelvic girdle – 1 x 2 = 2

Hind limbs are those that are found in the back part of the body I.e legs.
Human arms have hands which are specialised organs allowing them to grasp and manipulate the objects. Fore limbs are shorter than the hind limbs. This is due to taller bones present in the hind limbs as compared to fore limbs.
Bones in hind limb – 30 + 30 = 60
Bones in forelimb – 30 + 30 = 60

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