meritnation.comUpgradeCall Us at011-40705050orClick to CallDownload our Mobile App
Hello Neeti Sharma
Studious242140Merit points - Connectwith friends
- Take-A-Break
- Discoveryourself
- Dashboard
- Study
- TextbookSolutions
- Test
- Revise
- Ask Answer
Subjects
- Science
- Math
- English
- Social Science
- Hindi
- PSA Tests
- Vedic Math
- GK
- Revision Pack
- Olympiad
All living organisms are made up of millions of cells. These cells perform all the functions of the body—whether it is the beating of the heart or the movement of the hands. Let us find out how these cells perform so many different functions.
What can you conclude from the figures given above?
The given figures show that:cells having similar structures combine to perform the same function.This combination or cluster of cells is known as a tissue. For example, nerve cells combine to form the nervous tissue.
There arennumber of cells in multicellular organisms. These cellsmake up the tissues, which in turn combine to make up the different organs. The different organs form the different organ systems and these organ systems unite to form the organism.
Cells → Tissues → Organs → Organ systems → Organism/Individual
On the other hand, unicellular organisms have only a single cell. This sole cell performs all cellular functions. For example,Amoeba. So, division of labour is a feature of multicellular organisms rather than of unicellular organisms. The tissues present in one organism are different from the tissues present in another. For example, the tissues present in animals are broadly classified asepithelial, connective, muscularandnervous tissues. In contrast, the tissues present in plants are broadly classified asmeristematicandpermanent.
Meristematic TissuesMeristematic tissue, also known asmeristem, is composed of immature and continuously dividing cells. In plants, the shoot and root tips are made up of meristematic tissues.
Let us observe meristematic tissues.
Characteristics of meristematic tissues:
- Meristems are made up of immature orundifferentiatedcells.
- Their cells are small in size.
- Their cells are highly active metabolically and contain a dense cytoplasm.
- Intercellular space is negligible and is often absent in case of meristematic tissues.
- The cell wall is thinner and has a prominent nucleus.
Apical meristems: They are present at the tips of stems, roots and branches. They are responsible for the axial growth in a plant.
Intercalary meristems: They are present at the base of the internodes. They are responsible for the growth of the internodal region.
Lateral meristems: They are present on the lateral side of stems and roots. They are responsible for the radial growth of plants.Vascular cambiumandcork cambiumare examples of lateral meristem.
Types of Meristematic Tissues
Example2:Why are meristematic cells referred to as undifferentiated cells?
Solution:Meristematic cells are undifferentiated cells because they are in a dividing state and their nature of work has not been decided. When cells perform a particular function, they are said to be differentiated.
Classification of Plant Tissues
- Topics
- Introduction
- Meristematic Tissu...
- - Tissues: An Overview
- - Meristematic Tissues
- - Types of Meristemat...
- - Classification of P...
- Review
- Simple Permanent T...
- Complex Permanent ...
- Epithelial Tissue
- Connective Tissues
- Muscular Tissues
- Neural Tissues
aayush rastogiis going through NCERT questionरहीम » Page No: 94 » Question No. 1 from Hindi
ASHUis going through NCERT questionHeron's Formula » Page No: 206 » Question No. 1 from Math
Ayush Kumar Singhis going through textbook solution questionAngles, Lines and Triangles » Page No: 145 » Question No. 17 from Math
ABHISHEKis going through textbook solution questionMatter in Our Surroundings » Page No: 20 » Question No. 50 from Science
er.bvasuis going through NCERT questionPolynomials » Page No: 32 » Question No. 4 from Math
Avi Guptais going through NCERT questionMatter in Our Surroundings » Page No: 12 » Question No. 7 from Science
ASHUis going through NCERT questionHeron's Formula » Page No: 206 » Question No. 4 from Math
Avi Guptais going through NCERT questionMatter in Our Surroundings » Page No: 12 » Question No. 6 from Science
ASHUis going through NCERT questionHeron's Formula » Page No: 206 » Question No. 3 from Math
ABHISHEKis going through textbook solution questionMatter in Our Surroundings » Page No: 20 » Question No. 55 from Science
meenu_tomar_2008is going through NCERT questionElectricity » Page No: 216 » Question No. 1 from Science
Avi Guptais going through NCERT questionMatter in Our Surroundings » Page No: 10 » Question No. 5 from Science
Harsh Vardhanis studying a new chapterMatter in Our Surroundings » Factors Affecting Evaporation from Science
ddhajksakjsdbis going through NCERT questionHeron's Formula » Page No: 206 » Question No. 1 from Math
er.bvasuis going through NCERT questionPolynomials » Page No: 32 » Question No. 2 from Math
JAIVAL MEHTAis studying a new chapterMatter in Our Surroundings » Characteristics of Matter from Science
Farhat Jabiis going through textbook solution questionPolynomials » Page No: 59 » Question No. 13 from Math
Avi Guptais going through NCERT questionMatter in Our Surroundings » Page No: 12 » Question No. 1 from Science
Avi Guptais going through NCERT questionMatter in Our Surroundings » Page No: 12 » Question No. 9 from Science
rahul kumaris going through textbook solution questionAngles, Lines and Triangles » Page No: 119 » Question No. 12 from Math
rahul kumaris going through textbook solution questionAngles, Lines and Triangles » Page No: 119 » Question No. 10 from Math
jackis going through textbook solution questionTrigonometric Identities » Page No: 315 » Question No. 21 from Math
Adityais going through NCERT questionNumber Systems » Page No: 5 » Question No. 1 from Math
Avi Guptais going through NCERT questionMatter in Our Surroundings » Page No: 12 » Question No. 3 from Science
meenu_tomar_2008is going through NCERT questionElectricity » Page No: 209 » Question No. 1 from Science
meenu_tomar_2008is going through NCERT questionElectricity » Page No: 209 » Question No. 3 from Science
Ask Answer- Q:what are the different types of tissues?
- Q:what are the name of the tissues present in our eye?
- Q:name of tissue in fibres in orange fruit
- Q:definition of permanent tissue
- Q:whatvascular bundles
- About Us
- Blog
- Terms Conditions
- FAQ
- care@meritnation.com
- 011-40705050
Feedback
I could not interpret your query. Please be a little specific so that I could provide you meaningful help.