Question
Define the process of differentiation.
✓
Answer
Cells derived from the division of meristematic tissues take up specific roles and gradually lose their ability to divide. Thus, they form permanent tissue. The process by which the cells divide meristematically to take a permanent shape, size and function is called differentiation.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Discuss the various methods which are used to control plant diseases.
An atom of element $E$ contains $3$ protons, $3$ electrons and $4$ neutrons:
→- What is its atomic number$?$
- What is its mass number$?$
- Write the electronic configuration of the element $E.$
- State whether element $E$ is a metal or non-metal. Why$?$
- What type of ion, cation or anion, will be formed by an atom of element $E?$ Why$?$
- Write the symbol of the ion formed by an atom of element $E.$
- What could element $X$ be$?$
Fill in the boxes given in with appropriate characteristics/ plant group (s).
A boy is moving on a straight road against a frictional force of $5N.$ After travelling a distance of $1.5\ km$ he forgot the correct path at a round about (Fig.) of radius $100m.$ However, he moves on the circular path for one and half cycle and then he moves forward upto $2.0\ km.$ Calculate the work done by him.
→Show by using the graphical method that:
→$\text{s}=\text{ut}+\frac{1}{2}\text{at}^2$
where the symbols have their usual meanings.Draw a neat labelled diagram of an animal cell.
There is a large group of materials $P$ which can be divided into three groups $Q, R,$ and $S$ on the basis of their properties. The substances belonging to group $Q$ can be solids, liquids or gases. The solids belonging to group $Q$ are usually electrical insulators. Most of the substances of group $R$ are solids which are good conductors of electricity. The substances belonging to group $S$ are neither insulators like $Q$ nor good conductors like $R.$ The properties of $S$ are intermediate between those of $Q$ and $R.$
→- What could the group of materials $P$ be$?$
- Name the substances $Q$. Give two examples of such substances.
- Name the substances $R.$ Write two examples of such substances.
- Name the substances $S.$ Give two examples of such substances.
- Out of $Q, R$ and $S,$ which substances are malleable and ductile$?$
Define acceleration due to gravity. Derive an expression for acceleration due to gravity in terms of mass of the earth (M) and universal gravitational constant (G).
Write the cations and anions present, if any, in the following:
→- $CH_3COONa$
- $NaCl$
- $H_2$
- $NH_4NO_3$
What is lymph? Describe its function.