Download App

Science questions in short. [2 marks ]

Cell Structure and Functions · Gujarat Board (GSEB) STD 8 (GSEB - English Medium). 17 questions.

Questions

questions in short. [2 marks ]

Take a timed test

17 questions · self-marked practice — reveal the answer and mark yourself.

Question 12 Marks
What is the function of cell wall in a plant cell?
Answer
Cell wall provides shape and rigidity to the plant cell. It also provides protection the cell.
View full question & answer→
Question 32 Marks
$A, B, C$ and $D$ are the basic part of all the cells. The part $A$ contains threadlike structures called $E$ which transfer the characteristic from parents to their off springs. The part $B$ uses glucose and oxygen to produce energy whereas part $C$ controls the movement of substance into the cell. The part $D$ is a transparent, jelly-like material. What could $A, B, C, D$ and $E$ be$?$
Answer
$A$ is nucleus; $B$ is mitochondria; $C$ is cell membrane; $D$ is cytoplasm; and $E$ is chromosomes.
View full question & answer→
Question 42 Marks
What are multicellular organisms? Name two multicellular organisms.
Answer
The organisms made up of many cells are called multicellular organisms. Examples: Animal and plant.
View full question & answer→
Question 52 Marks
$X$ and $Y$ are the two types of cells. The cells $X$ have a well$-$organized nucleus which is separated from the cytoplasm by the nuclear membrane on the other hand, cells $Y$ do not have a real nucleus, their nuclear material is in direct contact with the cytoplasm.
$a.$ What type of cells are $(i)\ X,$ and $(ii)\ Y?$
$b.$ Give one example each of cells like $(i)\ X,$ and $(ii)\ Y?$
Answer
$a. (i)$ Eukaryotic cell $(ii)$ Prokaryotic cell.
$b. (i)$ Amoeba cell $(ii)$ Bacterium cell.
View full question & answer→
Question 62 Marks
What is protoplasm? Name the elements which make up major part of protoplasm.
Answer
Cell without its cell membrane is called Protoplasm. The Cytoplasm and Nucleus taken together make up the protoplasm.
View full question & answer→
Question 72 Marks
Out of Amoeba cell and white blood cell, which one is:
$a.$ Eukaryotic cell, and
$b.$ Prokaryotic cell?
Answer
Amoeba cell and White Blood Cell both are eukarytic cell because they have well defined nucleus with a nuclear membrane.
View full question & answer→
Question 82 Marks
Name two cells which are found in animals and two which are found in plants.
Answer
The cells which are found in animals are – Red blood cells $(RBCs)$ and Muscle cells The cells which are found in plants are – Xylem cells and phloem cells.
View full question & answer→
Question 92 Marks
Name one prokaryotic cell and one eukaryotic cell.
Answer
$a.$ Prokaryotic cell – Blue green algae.
$b.$ Eukaryotic cell – Onion peel cell.
View full question & answer→
Question 102 Marks
Why are plant and animal specimens usually stained with dyes before observing them through a microscope? Name one stain (or dye) used for this purpose.
Answer
The various parts of the cell are colorless and hence, difficult to distinguish. So, various stains are used to colour the parts of the cell to study the detailed structure through a microscope. The dyes (stains) which are used in the study of cell structure are methylene blue, dilute iodine solution, etc.
View full question & answer→
Question 112 Marks
What is the shape of red blood cells in human blood? What function do red blood cells perform?
Answer
Red blood cells $(RBCs)$ are usually spherical in shape. The main function of red blood cells is to carry oxygen from the lungs to the tissues around the body.
View full question & answer→
Question 122 Marks
State the difference between prokaryotes and eukaryotes.
Answer
Prokaryotes have nuclear material without nuclear membrane whereas eukaryotes have well organized nucleus with a nuclear membrane.
View full question & answer→
Question 132 Marks
What are unicellular organisms? Name two unicellular organisms.
Answer
The organisms made up of single cell are called unicellular organisms. Examples- Amoeba, Paramecium.
View full question & answer→
Question 142 Marks
What are genes? Where are genes located?
Answer
Gene is a unit of inheritance in living organisms. It controls the transfer of a hereditary characteristic from parents to offspring. Genes are located on chromosomes.
View full question & answer→
Question 152 Marks
Name two prokaryotes and two eukaryotes.
Answer
$a.$ Prokaryotes $-$ Blue green algae and bacteria.
$b.$ Eukaryotes $-$ Onion cells and cheek cells.
View full question & answer→
Question 162 Marks
What is the size of an ostrich egg$?$ Is it a single cell or a group of cells$?$
Answer
The size of an ostrich egg is $170\ mm × 130\ mm.$ It is the largest cell. It is a single cell called “fertilized egg cell” or “zygote”.
View full question & answer→
Question 172 Marks
Why are nerve cells long and have branches?
Answer
Nerve cells (neurons) are long, branched and have thread-like projections so that they can connect other nerves cells and transmit messages over long distance.
View full question & answer→
Generate Paper FreeAll Cell Structure and Functions topics