Samacheer Kalvi solutions for Science - Term 2 [English] Class 7 TN Board chapter 4 - Cell Biology [Latest edition]

Basis unit of life.

I am the outer most layer of an animal cell. Who am I?

Which part of the cell is called the brain of the cell?

______ helps in cell division.

Suitable term for the various components of cell is ______.

The jelly like substance present in the cell is called ______.

I convert the Sun’s energy into food for the plant. Who am I?______

Mature Red blood cell do not contain a ______.

Unicellular organisms can only be seen under a _____.

Cytoplasm plus nucleoplasm is equal to ______.

True or False – If false give the correct answer

Animal cells have a cell wall

True or False – If false give the correct answer

Salmonella is a unicellular bacteria.

True or False – If false give the correct answer

Cell membrane is fully permeable.

True or False – If false give the correct answer

Only plant cells have chloroplasts.

True or False – If false give the correct answer

Human stomach is an organ.

True or False – If false give the correct answer

Ribosomes are small organelles with a membrane.

Match the following

Bacteria: microorganism:: mango tree: ______.

Adipose: tissue:: eye: ______.

Cell wall : plant cell :: centriole :______.

Chloroplast : photosynthesis :: mitochondria : ______.

Assertion (A): Tissue is a group of dissimilar cells.

Reason (R): Muscle is made up of Muscle cell.

Assertion (A): Majority of cells cannot be seen directly with naked eye because.

Reason (R): Cells are microscopic.

What are the functions of cell wall in plant cell?

Which organelle uses energy from sunlight to make starch?

What are the main things in a nucleus?

What does cell membrane do?

Why lysosomes are known as scavengers of the cell?

Teacher said “A virus is not an organism” Do you agree with this statement or not? Explain Why?

Why the cell is very important for us?

Distinguish between the following pairs Smooth ER and Rough ER Cell wall and cell membrane Chloroplast and mitochondria.

Write correct sequence from cell to organism?

Write a short note on nucleus

Classify the following terms into cells, tissues, organs and write in the tabular column given below

Neuron, Lungs. Xylem, brain, adipose, Leaf, RBC, WBC, hand, muscle, heart, ovum, squamous, phloem, cartilage.

On the lines given below, write about what you have learned from the activities done in this lesson.

Let me tell you about some of the important things I’ve learned about cells. First, I’ll start with…______

Write about any three organelles in detail.

In a situation, how to explain, while your friend ask what is this, never seen before?

Compare the plant cell and the animal cell and complete the illustration given below.

Higher order thinking question

Virus is called Acellular. Why?