Chapter 9

Cooking and Eating Habits

Highlights

EXERCISE

A. Fill in the blanks.
B. Match the following column:
C. Tick the correct option.

Answer: vacuole

Answer: a single cell

Answer: nuclear membrane

E. Answer the following questions in brief.

Answer: The (main) factors that determine the shape of a cell are location and function.

Answer: Distinguish between unicellular and multicellular organisms are

Unicellular organisms are made up of a single cell. e.g., Euglena and Amoeba.

Multicellular organisms are made up of many cells. e.g., Humans and Birds.

Answer: All organisms are made up of cells. A cell is capable of independent existence. Due to this, cell is called the structural and functional unit of life.

Answer: Mitochondria is known as the Powerhouse of the cell.

Mitochondria are the site of cellular respiration. Energy is produced during this process. Due to this, mitochondria are called the Powerhouse of the cell.

Answer: Chloroplast is responsible for imparting colour to the leaves. Chromoplast is responsible for imparting colour to fruits.

F. Answer the following questions.

Answer: Chloroplast is responsible for imparting colour to the leaves. Chromoplast is responsible for imparting colour to fruits.

Answer: Chromosomes are formed in the nucleus during cell division. When the cell is ready to divide, the chromatin (in nucleus) condenses to form thicker, thread-like chromosomes. Chromosomes are responsible for inheritance of characters from one generation to the next generation.

Answer: Chloroplast is responsible for imparting colour to the leaves. Chromoplast is responsible for imparting colour to fruits.

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