Chapter 2 Tissues Flashcards
What are tissues?
Tissues are a group of cells that are similar in structure and function.
Define merismatic tissue and classify them further.
Dividing tissue are known as merismatic tissue.
Based on location they’re classified into 3 parts
Apical meristem ( present on growing tip of stems) it increases the length of the stem.
Lateral meristem ( girth of the stem increases due to lateral)
Intercalary meristem ( increases nodes)
What are permanent tissues? And how are they divided?
Merismatic tissue, once they lose the ability to divide they form permanent tissue.
They’re divided into simple permanent tissue and complex permanent tissue
Features of parenchyma. Also define chlorenchyma and aerenchyma.
Parenchyma - 1 thin cell walls. 2 living cells 3 large inter cellular space 4 stores food
Parenchyma which contains chlorophyll is called chlorenchyma.
Parenchyma present in aquatic plants is called aerenchyma.
Features of collenchyma and sclerenchyma
C- 1 provides mechanical support
2 living cells 3 little inter cellular space 4 elongated tissue
S - 1 dead cells 2 long and narrow cell walls 3 provides protection 4 no inter cellular space.
What is epidermis? And what is the function of stomata?
Epidermis is the outermost layer of cells. It provides protection to all parts.
Small pores present on epidermis are called stomata, they’re necessary for transpiration process.
Name the two complex plant tissue and also state what they’re made up of.
Xylem and phloem ( together called vascular bundle)
Xylem - parenchyma, fibres, tracheids, vessels.
Phloem - parenchyma, fibres, companion cells and sieve tubes.
How are animal tissue classified?
Four types - 1 epithelial 2 connective 3 muscular 4 nervous
Location and function of squamous and stratified squamous tissue.
Simples squamous - thin cells present at oesophagus, skin and mouth.
Stratifed squamous - multiple layers of simple squamous is called stratified squamous. Present on skin.
Columnar and cuboidal epithelial tissue, function location. Also define glandular tissue.
Column - helps in secretion and absorption.
Present in stomach, intestine.
Cuboidal - mechanical support and glandular tissue (formed when cuboidal folds inward) secretes hormones, present in ovary, salivary gland.
Tissue which secrete hormones, enzymes are called glandular tissue.
All types of connective animal tissue. Also write very short notes on them.
1 blood ( transports gases, food, hormones)
2 bone ( framework that supports the body)
3 ligament ( connects bone to bone)
4 tendon ( muscles to bone connect)
5 cartilage ( soft bones, present in nose, ears, joints of bone surface )
6 areolar ( helps in repair of tissue)
7 adipose ( stores fat, also acts as a insulator)
Compare all the muscular tissues.
Striated -1 voluntary movement. 2 cylindrical shape 3 multinucleated 4 unbranched
Smooth/unstriated -1 involuntary movement 2 spindle shaped 3 uninucleated 4 unbranched
Cardiac - 1 involuntary movement 2 cylindrical shape 3 uninucleated 4 branched
