Class 9

Fundamental unit of life. Test.

VERY SHORT ANSWERS

1) Which instrument is most commonly used to observe the cellular

organisation of livingorganisms?

2) Name the two cellular components that are absent in animal cell but
present in the plant cell.

3) What is the most important characteristic of prokaryotic cells?

4) Which unicellular organism has irregular shape?

5) Name the scientist who presented the cell theory

6) Which cell organelle controls most of the activities of the cell?

7) Name the process by which Co2 or O2gets transported across the plasma
membrane?

8) Give two examples of unicellular organisms.

9) Name the non-living component in a plant cell.

10) Name three basic components of a typical eukaryotic cell..

11) Name the nucleic acids that are present in an animal cell.

12) Give one example of osmosis in plants.

13) Who coined the term “cell”?

MULTIPLE CHOICE QUESTION

1. Which cell organelle plays a crucial role in detoxifying many poison

and drugin a cell?
a) Golgi apparatus b) Lysosomes c) Smooth endoplasmic reticulum
d) Vacuoles
2. The undefined nuclear region of prokaryotes are also known as
 a) Nucleus b) Nucleolus c) Nucleic acid d) Nucleoid
3. Amoeba acquires its food through a process, termed
a) Exocytosis b) Endocytosis c) Plasmolysis d) Exocytosis and
Endocytosis
4. Cell arises from pre-existing cell was stated by
a) Haeckel b) Virchow c) Hooke d) Schleiden
5. Cell wall in plant cells is made of
a) Starch b) Glycogen c) Chitin d) Cellulose
6. Dry raisins, when dipped in water, swell up due to
a) Exosmosis b) Endosmosis c) Imbibition d) Plasmolysis
7. Dry raisins swell up when dipped in
a) Pure water b) Concentrated salt solution c) Concentrated
glucosesolution d) Concentrated sugar solution
8. R.B.Cs when placed in hypertonic solution will
a) Shrink b) Swell up c) no change in form d) burst
9. Name the stain which is commonly used to study plant cells.
a) Methylene blue b) cotton blue c) Safranin d) Acetocarmine
10. Coverslip is put on the mounted material on a slide very gently to
a) Avoid the crushing of mounted material b) avoid the entry of air
bubbles c) avoid oozing of stain d) avoid oozing of glycerine

SHORT ANSWERS (THREE MARKS)

1.What are chromosomes made up of? How are chromatin, chromatid and
chromosomesrelated to each other?

2. How is bacterial cell different from onion peel?

3. Differentiate between rough and smooth endoplasmic reticulum. How is

endoplasmicreticulum important for membrane biogenesis?

4. Define diffusion. Differentiate between diffusion and osmosis

.5. i) Define plasmolysis.ii) Why is plasma membrane termed selectively

permeable?

6. What would happen if the plasma membrane ruptures or breaks down?

7. How does an Amoeba obtain its food?

8. Draw a neat diagram of plant cell and label any three parts which
differentiate it from animal cell.

LONG ANSWERS (FIVE MARKS)

1. In brief state what happens when:(a) Dry apricots are left for some
time in pure water and later transferred to sugar solution.
(b) A red blood cell is kept in concentrated saline solution.(c) How do
substances like CO2 and water move in and out of the cell .(d) Rheo
leaves are boiled in water first and then a drop of sugar syrup is put
on it.
2. Draw a well labelled diagram of an eukaryotic nucleus. How is it
different from nucleoid?
3. Make a comparison and write down ways in which plant cells are
different from animalcells.
Class 9

Tissues Test

BIOLOGY

Plant Tissue

Q1 FILL IN THE BLANKS.

(a) _______ and are forms of complex tissue.

(b) _______ have guard cells.

(c) cells of cork contain a chemical called _______

(d) Husk of coconut is made of _______ tissue.

(e) _______ gives flexibility in plants.

(f) _______ and _______ are both conducting tissues.

(g) Xylem transports and _______ and _______ from soil.

(h) Phloem transport from _______ and _______ to other parts of the plant.

Q2 ASSERTION REASON

Directions: In the following questions, a statement of assertion is followed by a

statement of reason.

Mark the correct choice as:

(a) If both Assertion and Reason are true and Reason is the correct explanation of
Assertion.

(b) If both Assertion and Reason are true but Reason is not the correct explanation of
Assertion.

(c) If Assertion is true but Reason is false.

(d) If both Assertion and Reason are false.

1.Assertion: Apical and intercalary meristems contribute to the growth in length, while
the lateral meristems cause

increase in girth in maize.

Reason: Apical and intercalary meristems always increase the height of plants.

2.Assertion: Collenchyma forms the hypodermis of dicotyledon stems.

Reason : This is the reason for flexibility of dicotyledonous stems.

3.Assertion : Aerenchyma help in buoyancy to hydrophyte plants.

Reason : The large air chambers are present in aerenchyma.

4.Assertion: A simple tissue is made of only one type of cells.

Reason: Various simple tissues in plants are parenchyma, collenchyma and

sclerenchyma.

5.Assertion: Higher plants have meristematic regions for indefinite growth.

Reason: Higher plants have root and shoot apices.

Q3 NAME THE FOLLOWING /GIVE ONE WORD FOR THE FOLLOWING:

a) Name the dead part of phloem.

b) Name the tissue that helps the leaves of lotus plant to float on water.

c) Name any two types of simple permanent plant tissues.

d) In which of the simple plant tissue, deposition of lignin is found?

e) Name the meristemthat is present at growing tips of stems and roots?

f) Name the tissue which replaces the epidermal tissue in older stem and is rich in
suberin.

g) Name the permanent tissue that give flexibility to the plants .

Q4 DIFFERENTIATE BETWEEN THE FOLLOWING IN ATLEAST 2 POINTS :

a) Differentiate between chlorenchyma and aerenchyma.

b) Differentiate between meristematic and permanent tissues in plants.

c) Differentiate between Xylem and phloem

d) Differentiate diagrammatically between xylem vessel and xylem Tracheids.

Q5 GIVE REASON FOR THE FOLLOWING STATEMENTS :

a) Meristematic cells have a prominent nucleus and dense cytoplasm but they lack
vacuole.

b) We get a crunchy and granular feeling, when we chew pear fruit.

c) Branches of a tree move and bend freely in high wind velocity.

d) It is difficult to pull out the husk of a coconut tree.

e) What is the role of large air cavities in the leaves of such plants?

f) Intercellular spaces are absent in sclerenchymatous tissues.

Q6 EXPLAIN THE SIGNIFICANCE OF THE FOLLOWING:

a) Hair-like structures on epidermal cells.

b) Epidermis has thick waxy coating of Cutin in desert plants.

c) Small pores in epidermis of leaf.

d) Numerous layers of epidermis in cactus.

e) Presence of a chemical suberin in cork cells.

Q7 Answer the given questions (2M)

a) List any four salient features of meristematic tissue.

b) Describe the structure and two functions of stomata.

c) Write the four elements of xylem.

d) Name the elements of phloem.

Q8 Answer the given questions (3M)

a) Write three roles of Epidermis in a plants.

b) Draw a well labelled diagram of Parenchyma, Collenchyma and Sclerenchyma.

OR

c) Give location of Parenchyma, Collenchyma and Sclerenchyma.

d) Differentiate between Parenchyma , Collenchyma and sclerenchyma tissues on the

basis of their function.

e) Label A, Band C with their respective functions.

Q9 Answer the given questions (4M)

a) List the characteristics of cork. How are they formed? Mention their role.
b) What is the difference between simple permanent tissues and complex permanent
tissue.

c) Why are xylem and phloem called complex tissues? How are they different from one
other (4points)?

d) Name the different components of xylem and draw a living component.

e) Identify different elements of phloem labelled as 1,2,3 and 4.

f) Complete the following chart.

Q10 Draw and label :

Meristematic tissues (location)

Parenchyma

Collenchyma

Sclerenchyma

Xylem

Phloem
Chapter 5

Prokaryotes Eukaryotes

Cells of organism lacks Cells of organism have nuclear

nuclear membrane. membrane.

Nucleolus is absent. Nucleolus is present.

Single chromosomes. Single or multi chromosomes

Reproduction is always Reproduction is both sexual and

asexual. asexual.

Always unicellular. Often multicellular.

Membrane bound cell Membrane bound organelles are

organelles are absent. present like mitochondria.

Centriole is absent. Centriole is present only in animals cell.

Cell division is by binary

fission. Cell division is by mitosis or meiosis.

Example: Bacteria, Blue green Example: Fungi, Plant cell, Animal cell
algae, etc. etc.

Animal Cell Plant Cell

Cell wall is absent. Cell wall is present.

Plastids are absent. Plastids are present.

 Centrioles are present. Centrioles are absent.

Golgi bodies are present and called

Golgi bodies are present. dictyosome.

Vacuoles are absent. If present, they Vacuoles are present and large in
are small. size.

Centrosome is present with one or two

centrioles. Centrosome is absent

DIFFUSION OSMOSIS 1. The process of movement of molecules from a region

of higher concentration to lower concentration to spread uniformly in given
space. 1. The process of movement of water molecules from region of higher
concentration to lower concentration through semipermeable membrane. 2.
It is seen in solids, liquids and gases. 2. It is seen only in liquids. 3. It helps in
exchange of gases like CO2 and O2 between cell as well as its external
environment. 3. It helps in absorption of water by plant cells and unicellular
organisms

Chromoplast Leucoplast
Coloured in nature, Colourless in nature
contain a pigment called
chlorophyll
Cause photosynthesis in Act as storage spaces of the cells
plants
Contain orange and yellow Contain starch, proteins and oil
pigments
Can further be divided into Can further be divided into
Chloroplasts amyloplast, elaioplast and
proteinoplast or aleuroplast.
The functional unit of Life

1 mark question

1. What would happen if the plasma membrane ruptures or breaks down?

2. What would happen to the life of a cell if there was no Golgi apparatus?
3. Which organelle is known as the powerhouse of the cell? Why?
4. Where do the lipids and proteins constituting the cell membrane get
synthesised?
5. How does Amoeba obtain it’s food?
6. What is osmosis?
7. Differentiate between chromatin and chromosome.
8. What is the Junction of chromosome?
9. Name the organelles present in liver of animals for detoxifying many
poisons and drugs
10. What is the function of ribosome?
11. Where are genes located in the cell?
12. Name two cells with cell wall.
13. Why does mitochondria have largely folded inner membrane?
14. What are cisterns?

2 mark questions

1. State the difference between smooth endoplasmic reticulum and rough

endoplasmic reticulum.
2. What is endocytosis?
3. What is the function of vacuoles?
4. What is the Junction of plastids?
5. Explain the structure and function of Golgi bodies (3 marks)
6. What is membrane biogenesis?

3 Mark question

1. Sachin’s mother wanted to use some eggs for incubation. Sachin helped
his mother in separating rotten and spoilt eggs from the good ones. He
took a bucket of water to separate them.
(a) How can one separate the rotten eggs from the good ones using
water?
(b) What is the shell of egg made up of?
(c) What value of Sachin is seen in this act?
Class 6

1. What is differentiation?
2. Name the three types of meristematic tissues.
3. Give difference between xylem and phloem.
4. Name the tissues for the following:
(a) Stores fat in animal body.
(b) Divides and re-divides to grow in plants.
(c) Tissue that joins hone to hone.
5. What is stomata?
6. Name and give the function of each cell of xylem:
7. What is connective tissue? Explain its types. (3Marks)
8. Describe ‘epidermis’ in plants. (3 marks)
9. Explain the “complex tissue” of plants. (3 marks)