Match the cell organelles with their functions: A B a) cell wall i. protein synthesis b) nucleus ii. controlling entry and exit of substances c) golgi body iii. store food and other nutrients d) endoplasmic reticulum iv. digestion of cell waste e) cell membrane v. protection and shape f) vacuole vi. site of photosynthesis g) ribosome vii. controls all the activities of the cell h) lysosome viii. transportation of material i) chloroplast ix. packaging of material for transportation

a)- v The cell wall is the outermost layer of the plant cell that is made up of cellulose. It provides protection and shape to the cell. b)- vii The nucleus contains the genetic material of a cell. It is considered the brain of the cell because it can regulate the functioning of the cell. Thus, the nucleus regulates all the activities of the cell. c)- ix Golgi bodies are the cell organelles that look like a pile of sacs. These sacs have a disc-like shape. They modify fats and proteins and pack them to transport. Thus, golgi bodies are involved in packaging of material to transport. For d)- viii. Endoplasmic reticulum synthesizes, stores, and transmits proteins and lipids in the cell. Thus, endoplasmic reticulum is responsible for the transportation of materials. e)- ii A cell membrane is the thin porous membrane that surrounds the cell. It is a semipermeable membrane. Thus, cell membrane regulates the entry and exit of substances from the cell. f)- iii The cell contains storage sacs within the cytoplasm that are called vacuoles. They store food and various nutrients that are necessary for the survival of the cell. Thus, vacuoles are responsible for storage of food and other nutrients. g)- i Ribosomes are either scattered in the cytoplasm or attached to the surface of the endoplasmic reticulum. They serve as the site for the protein synthesis. h)- iv Lysosomes consist of enzymes that can digest cells and various cellular waste materials. They can explode and damage the cell in case of an emergency. Thus, lysosomes is responsible in digestion of cell waste. i)- vi Chloroplast is a type of plastid that is present in plant cells and it contains the pigment chlorophyll. It helps plants in food preparation or photosynthesis. Thus, chloroplast serves as the site of photosynthesis. A B a) cell wall v. protection and shape b) nucleus vii. controls all the activities of the cell c) golgi body ix. packaging of material for transportation d) endoplasmic reticulum viii. transportation of material e) cell membrane ii. controlling entry and exit of substances f) vacuole iii. store food and other nutrients g) ribosome i. protein synthesis h) lysosome iv. digestion of cell waste i) chloroplast vi. site of photosynthesis

E M B I B E

Galaxy A Course in Science Book 8>The World of the Living>Chapter 8 - Cell Structure and Function>Put on your thinking cap

Anita Paul, Seema Sinha, Deepika Parashari and, Karuni Subrahmanyam Solutions for Exercise 3: Put on your thinking cap

Author:Anita Paul, Seema Sinha, Deepika Parashari & Karuni Subrahmanyam

Anita Paul Science Solutions for Exercise - Anita Paul, Seema Sinha, Deepika Parashari and, Karuni Subrahmanyam Solutions for Exercise 3: Put on your thinking cap

Attempt the practice questions from Exercise 3: Put on your thinking cap with hints and solutions to strengthen your understanding. Galaxy A Course in Science Book 8 solutions are prepared by Experienced Embibe Experts.

Questions from Anita Paul, Seema Sinha, Deepika Parashari and, Karuni Subrahmanyam Solutions for Exercise 3: Put on your thinking cap with Hints & Solutions

EASY

8th CBSE

IMPORTANT

Galaxy A Course in Science Book 8>Chapter 8 - Cell Structure and Function>Put on your thinking cap>Q 2

The cell membrane is selectively permeable.

EASY

8th CBSE

IMPORTANT

Galaxy A Course in Science Book 8>Chapter 8 - Cell Structure and Function>Put on your thinking cap>Q 2

Chromoplasts are found in the green parts of the plant.

EASY

8th CBSE

IMPORTANT

Galaxy A Course in Science Book 8>Chapter 8 - Cell Structure and Function>Put on your thinking cap>Q 2

Nucleoplasm transports material within as well as outside the cell.

EASY

8th CBSE

IMPORTANT

Galaxy A Course in Science Book 8>Chapter 8 - Cell Structure and Function>Put on your thinking cap>Q 2

Large-sized vacuoles are present in animal cells.

EASY

8th CBSE

IMPORTANT

Galaxy A Course in Science Book 8>Chapter 8 - Cell Structure and Function>Put on your thinking cap>Q 2

Centrioles help in cell division in animal cells.

EASY

8th CBSE

IMPORTANT

Galaxy A Course in Science Book 8>Chapter 8 - Cell Structure and Function>Put on your thinking cap>Q 2

Ribosomes are capable of destroying the cell in which they are present.

HARD

8th CBSE

IMPORTANT

Galaxy A Course in Science Book 8>Chapter 8 - Cell Structure and Function>Put on your thinking cap>Q 3

Match the cell organelles with their functions:

A	B
a) cell wall	i. protein synthesis
b) nucleus	ii. controlling entry and exit of substances
c) golgi body	iii. store food and other nutrients
d) endoplasmic reticulum	iv. digestion of cell waste
e) cell membrane	v. protection and shape
f) vacuole	vi. site of photosynthesis
g) ribosome	vii. controls all the activities of the cell
h) lysosome	viii. transportation of material
i) chloroplast	ix. packaging of material for transportation