The structural and functional unit of life called cell was discovered by

Choose the correct statement with respect to unicellular organisms.

Out of the following, which animal is unicellular?

Which of the following is not a plastid?

Which of the following is not a cell?

...............is a unicellular aquatic animal.

Cells in which nuclear membrane is absent from the nucleus are called................cells.

The shape and size of a cell are related to its...................

Cell was discovered in..................

The outermost layer of plant cells is the (a) ......beneath which is the (b) ....... the term (c)......refers to the jelly-like substance containing all the (d) ....... the (e) .... contains thread-like structures called (f) ..........

Plasma membrane is dead.

Vacuoles present in animal cells are small.

Human cell is an eukaryotic cell.

The living substance in a cell is called organelle.

Amoeba has irregular shape.

Name the cell organelle and pigment present in leaf which are responsible for green colour.

We do not sense any pain when we clip our nails or cut our hair. Why?

Name two organisms that have more than two cells .

Amoeba and Paramecium belong to which category of organisms?

Mitochondria are important organelles of cell, often called 'powerhouse' of the cell. Give reason.

Write short notes on the following.
(a) Cytoplasm
(b) Nucleus of a cell.

Write some point of differences between plasma membrane and cell wall.

When and how the cells were discovered?

Label the parts A to E in the given figure

State whether the structure of the nucleus is the same in cells of plants, animals and bacteria

We read about various organelles present in a cell. Explain what is an organelle. Name the organelles that are found in most cells. What is the function of nucleus?

Rohit while gardening observed many beautiful flowering plants. He got attracted by the brightly coloured flowers and their beautiful appearance. He was curious to know about the variation of colours in flowers and asked her biology teacher about it. Teacher told her about the plastids found in plant cells.
(a) A particular plastid is responsible for the variation in colours of flowers. Which is it?
(b) Name the plastids known as kitchen of the cell.
(c) Are all plastids coloured?
(d) Will we be able to observe plastid in an animal cell?
(e) Identify values shown by Rohit.