This document provides an overview of different types of plant and animal tissues. It begins by defining tissue as a group of similarly structured cells that perform specialized functions. It then discusses the main types of plant tissues, including meristematic tissue which facilitates growth, and permanent tissues like parenchyma, collenchyma, and sclerenchyma that provide structure and support. The document also examines epithelial tissues that form protective layers, and complex tissues like the vascular system. Finally, it reviews the major animal tissues - epithelial tissue, connective tissues like bone and cartilage, and muscular tissues composed of contractile cells.

1. SCIENCE
PROJECT
WORK

3. INTRODUCTION
 Tissue,
group of associated, similarly structured cells that
perform specialized functions for the survival of the
organism (see Physiology). Animal tissues, to which this
article is limited, take their first form when the blastula
cells, arising from the fertilized ovum, differentiate into
three germ layers: the ectoderm, mesoderm, and endoderm

4.  There
PLANT TISSUE
are many variants of the generalized plant cell and its
parts. Similar kinds of cells are organized into structural and
functional units, or tissues, which make up the plant as a whole,
and new cells (and tissues) are formed at growing points of
actively dividing cells.
plant tissue
Meristematic
permanent

5. MERISTEMATIC TISSUE
 There
are many variants of the generalized plant cell and its parts.
Similar kinds of cells are organized into structural and functional
units, or tissues, which make up the plant as a whole, and new cells
(and tissues) are formed at growing points of actively dividing cells.
These growing points, called meristems, are located either at the stem
and root tips (apical meristems), where they are responsible for the
primary growth of plants, or laterally in stems and roots (lateral
meristems), where they are responsible for secondary plant growth.

Apical
meristematic tissue
intercalary
lateral

6. APICAL MERISTEM
This lengthwise section through the tip of a plant root reveals
the apical meristem, characterized by rapidly dividing cells
that are responsible for primary growth. Apical meristem can
also be found at the tips of stems where they are responsible
for secondary plant growth. Three tissue systems are
recognized in vascular plants: dermal, vascular, and ground.

7. INTERCALARY MERISTEM
Intercalary meristem Is the meristem at the base of the
leaves or internodes on either side of the node on twigs.
Lateral meristem
Lateral meristem is the meristem that increases the girth
of the stem or root

8. PERMANENT TISSUE of trees,
Parenchyma tissue makes up most of the pith and cortex
the photosynthetic tissue in leaves. Collenchyma cells mainly form
supporting tissue. They are found in the cortex of stems. The major
function of sclerenchyma is support. mature cells of this tissue are
generally dead and have thick walls containing lignin.

9. EPIDERMAL CELLS
Epithelial tissue forms a protective layer of cells that covers
organ surfaces and lines body cavities. Shown here is a
layer of simple squamous (scaly) epithelium under
magnification. Cancers that arise in epithelial tissues,
called carcinomas, account for approximately 90 percent of
all human cancers.

10. COMPLEX PERMANENT TISSUE
complex tissues include the dermal and vascular tissues of
plants. The epidermis is the outermost layer of cells on the
plant body. It covers the leaves, stems, and roots, as well as
the flower parts and seeds. In most plants the epidermis is
only one cell-layer thick. The epidermal cells are closely
packed. When viewed through a microscope, they resemble a
stone pavement

11. ANIMAL TISSUE
Epithelial tissue forms a protective layer of cells that covers
organ surfaces and lines body cavities. Shown here is a layer
of simple squamous (scaly) epithelium under magnification.
Cancers that arise in epithelial tissues, called carcinomas,
account for approximately 90 percent of all human cancers.

12. CONNECTIVE TISSUE and
Connective tissues include bone, cartilage, fat, ligaments,
tendons. These tissues support and connect parts of the body.
The structure varies depending on the purpose of the tissue.
The diagonal red band in this image shows elastin fiber,
which allows connective tissue to spring back into shape
following deformation.

13. TYPES OF CONNECTIVE TISSUE

14. MUSCULAR TISSUE
 Muscle,
tissue or organ of the animal body characterized by
the ability to contract, usually in response to a stimulus from
the nervous system. The basic unit of all muscle is the
myofibril, a minute, threadlike structure composed of
complex proteins. which are composed of regularly arranged
myofilaments of two types, thick and thin. eserved.

15. TYPES OF MUSCLES

16. THANK
YOU

17. DONE
BY
pavan