The arrangement of cells is comparable to bricks of building. Why?

Robert Hooke observed cell by viewing which structure?

Cell theory was refined in 1855. Name the scientist who is credited for it.

Are cells living or non-living?

One cell performs all life activities in unicellular organisms. State yes or no.

Give the organisation of a multicellular organism.

Is there any relation between size of organism and number of cells?

Do all organism have a cell membrane?

Name an additional feature of a plant cell.

In which part of cell, most of the chemical reactions take place?

Where are chromosomes found in a cell?

Give an example of an organisms with well-defined nucleus.

Name the green coloured plastid, essential for plants.

An organelle provides energy to the cell. Give its name and location.

A group of cells performing similar functions are known by a specific term. What is it?

The fundamental unit of life is cell. Comment.

Amoeba can attain the shape of Paramecium. Can Paramecium attain the shape of Amoeba?

The largest floating body is generally in the centre of a cell. Give its name.

Which is the largest cell in human body?

Write functions of cell membrane.

Write the name of control centre of cell.

Why does a red blood cell not reproduce?

Mention the size of an ostrich egg. Is it a single cell of a group of cells?

Draw a labelled diagram to show the general structure of a cell.

Plant and animal specimens are usually stained with dyes before observing them. Give reasons and name one dye used of the purpose.

In the organisation of multicellular organisms, what are the lower levels of organisation?

Write the difference between plant cell and animal cell.

Write the importance of flagella.

Chloroplasts are found only in plant cell. Explain.

With the help of examples, show the variation in size and shape.

Tabulate differences between plant and animal cell with diagram of onion peel cells and cheek cells.

How can you differentiate prokaryotes from eukaryotes?

Define cell and tissue.

Explain the structure and function of the nucleons.