Match the following. Column I Column II 1. Control center a. Cell membrane 2. Food producer (plant cell) b. Mitochondria 3. Gate of the nucleus c. Nucleus 4. Gate of the cell d. Chloroplasts 5. Energy producer e. Nuclear membrane

1. Control center- c. Nucleus The nucleus is a double membranous organelle that contains chromosomes and nucleolus. The former contains the genetic information that is required to control and regulates all the activities of the cell. Hence, it is called the control centre. It is bound by a nuclear membrane. 2. Food producer -d. Chloroplasts Chloroplasts present in the plant cell are called the food producers because they contain the pigment chlorophyll which traps the energy from the sunlight to prepare food by the process of photosynthesis. 3. Gate of the nucleus - e. Nuclear membrane The nuclear membrane protects and binds the nucleus. It also controls the movement of materials in and out of the nucleus. Therefore, it is called the gate of the nucleus. It is absent in prokaryotes (example: bacteria). 4. Gate of the cell - a. Cell membrane Cell membrane holds and protects the cell. It also controls the movement of materials in and out of the cell. Therefore, it is called the gate of the cell. Plant cells have an extra layer covering the cell membrane called the cell wall. 5. Energy producer - b. Mitochondria Mitochondria is a double membranous organelle that contains extra-chromosomal DNA. It has various enzymes to perform different reactions such as respiration. It is the site for energy production. Therefore, it is called the energy producer or the powerhouse of the cell. Column I Column II 1. Control center c. Nucleus 2. Food producer (plant cell) d. Chloroplasts 3. Gate of the nucleus e. Nuclear membrane 4. Gate of the cell a. Cell membrane 5. Energy producer b. Mitochondria

E M B I B E

Science Standard 6 Term II>Chapter 5 - The Cell>Evaluation>Q III

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6th Tamil Nadu Board

IMPORTANT

Earn 100

True or false. If false, give the correct answer.

New cells are produced from existing cells.

Important Questions on The Cell

MEDIUM

6th Tamil Nadu Board

IMPORTANT

Science Standard 6 Term II>Chapter 5 - The Cell>Evaluation>Q IV

Match the following.

Column I	Column II
1. Control center	a. Cell membrane
2. Food producer (plant cell)	b. Mitochondria
3. Gate of the nucleus	c. Nucleus
4. Gate of the cell	d. Chloroplasts
5. Energy producer	e. Nuclear membrane