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Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Class 9 MCQ


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15 Questions MCQ Test Science Olympiad Class 9 - Olympiad Test: Cell - The Fundamental Unit of Life- 2

Olympiad Test: Cell - The Fundamental Unit of Life- 2 for Class 9 2024 is part of Science Olympiad Class 9 preparation. The Olympiad Test: Cell - The Fundamental Unit of Life- 2 questions and answers have been prepared according to the Class 9 exam syllabus.The Olympiad Test: Cell - The Fundamental Unit of Life- 2 MCQs are made for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Cell - The Fundamental Unit of Life- 2 below.
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Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 1

Protein storing plastid is

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 1
Protein storing plastids are called Aleuroplast.

The colourless plastid or leucoplast gets differentiated to form alueroplast or proteinoplast.

Its main function is to store proteins in plant cells.

So the correct answer is 'Aleuroplasts'.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 2

Rough ER contains

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 2
Rough endoplasmic reticulum contains ribosomes attached to its surface for synthesizing proteins.
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Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 3

The undefined nuclear region of prokaryotes is also known as

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 3
Prokaryotic cells are the primitive organism, which has a disorganized nucleus. It is devoid of any membrane-bounded organelles. The genetic material consists of chromatin threads without histones. Nucleoid is the region in a prokaryote, which contains all or most of the genetic material. The genetic material is in direct contact with the cytoplasm.

So, the correct answer is option B.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 4

The only cell organelle seen in prokaryotic cell

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 4
Prokaryotes and eukaryotes are two different types of cells. Eukaryotic cells contain membrane-bound organelles, while prokaryotic cells do not.

The ribosome is the only organelle that can be seen in both prokaryotic and eukaryotic cells, though the types of ribosomes in the two types of cells vary.

Hence, the correct option is C.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 5

Find out the false statement

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 5
Option C is incorrect because, cytoplasm is not called as protoplasm but it is a part of protoplasm.

The protoplasm consists of cytoplasm, nucleus and the cell membrane.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 6

Which one of the following is absent in plant cell?

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 6
Centrioles are the part of centrosome located near the nucleus in the animal cell and some lower plant cells. But in higher plants, it is absent. It is involved in the formation of spindle fibre during cell division.
Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 7

Which of the following is incorrect pair?

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 7
The nucleus is the brain of a cell, which controls the entire cell.

Mitochondria is the power house of cell because it is the site for formation and storage of energy in the form of ATP.

The chloroplast is the kitchen of the cell which contains chlorophyll pigment- helps in photosynthesis.

The lysosome is otherwise known as a suicidal bag. This is because of the presence of several hydrolytic enzymes which helps in the lysis of unwanted substances entering the cell and on high pH it can digest its own cell. Thus, the correct answer is option A.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 8

Cytoplasm is

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 8
Protoplast refers to an entire cell including the cell membrane, cell organelles and the nucleus, excluding the cell wall (in plants and few algae).

Cytoplasm refers to the living the material or the protoplast within a cell excluding the nucleus.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 9

Sheet of photosynthesis is

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 9
The chloroplast is a type of plastid which produces green coloured pigment. The chloroplast is involved in carrying out photosynthesis. It gives a green colour to leaves.
Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 10

Kitchen of the cell is

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 10
Chloroplast is a plastid that is involved in the synthesis of carbohydeates through photosynthesis and hence called as the kitchen of the cell.
Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 11

Lysosomes arise from

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 11
Lysosomes are formed by budding of the vesicles from Golgi bodies. It contains hydrolytic enzymes. The hydrolytic enzyme helps in the intracellular digestion. It helps in the removal of cell debris. They act as suicidal bags of the cell.

So, the correct answer is option C.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 12

Chromosomes are made up of

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 12
The chromosomes are made of tightly folded/packed DNA molecules. These DNA molecules are kept in a compact state with help of certain proteins, namely the nucleosome protein made of Histone octamers and the scaffold proteins. Hence, the chromosomes are made up of both DNA and proteins.
Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 13

Cell wall of which one of these is not made up cellulose?

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 13
Hydrilla plant shows the presence of cellulosic cell wall surrounding its cell membrane.

Mango tree is an angiosperm plant. It shows the presence of thick cellulosic cell wall.

Cactus is a xerophytic plant. It shows the presence of thick, cellulosic cell wall. Cell wall prevents the loss of water from plant body.

Bacteria shows cell wall around its cell membrane. The bacterial cell wall is made up of peptidoglycan. Thus, the correct answer is option C.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 14

Organelle without a cell membrane is

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 14
Following are the cell organelles that are not bounded by the unit membrane

Ribosomes, Cytoskeletal structures, Centrioles, Basal bodies, Cilia and flagella.

Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 15

The proteins and lipids, essential for building the cell membrane, are manufactured by

Detailed Solution for Olympiad Test: Cell - The Fundamental Unit of Life- 2 - Question 15
The endoplasmic reticulum is of two types on the basis of the presence of ribosomes. If the endoplasmic reticulum ribosomes are attached to them then it is called a rough endoplasmic reticulum and if there are no ribosomes on the endoplasmic reticulum then it is called a smooth endoplasmic reticulum.

The rough endoplasmic reticulum produces and transports protein and the smooth endoplasmic reticulum produces and transports lipid which provides a framework to the plasma membrane a known as membrane biogenesis.

So, the correct answer is option D.

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