Mix Test 1

Result

Mix Test 1

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Weekly Quiz Competition

Question 1
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What is the physical state of water at 10⁰C ?

A
Solid

B
gas

C
Ionic

D
Liquid

Solution

Explanation:

The physical state of water at 10⁰C is the liquid state. Below 0⁰C water in solid state and above 100⁰C water in the vapour state.
Question 2
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Which of the two statements is true?

Statement A: In Kelvin temperature, the symbol (∘) is not used.

Statement B: Mercury is used in glass thermometers because it does not stick with glass.

A
Neither A nor B

B
Both A and B.

C
Statement A

D
Statement B

Solution

Explanation:

In Kelvin temperature, the symbol (∘) is not used.

Mercury is used in glass thermometers because it does not stick with glass and have a shiny surface to view easily.
Question 3
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What are the major constituents of universe?

A
Nitrogen and oxygen

B
Hydrogen and oxygen

C
Helium and Nitrogen

D
Hydrogen and Helium

Solution

Explanation:

The major constituents of universe are Hydrogen and Helium. They are constituent of Sun, stars and other solar bodies.
Question 4
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Which of the following element has the characteristics of both metals and non – metals?

A
Phosphorus

B
Nitrogen

C
Carbon

D
Arsenic

Solution

Explanation:

The element that possesses characteristic of both metal and non-metal are called metalloid. Arsenic is the element that has properties of both metal and non-metal.

Question 5

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Match the following with the correct response:

(1) Lysosomes	(A) Smooth endoplasmic reticulum
(2) Centriole	(B) Spindle formation
(3) Processing & packaging of cell secretions	(C) Suicidal bags
(4) Synthesis of lipids	(D) Golgi apparatus

1-C, 2-B, 3-D, 4-A

1-B, 2-D, 3-A, 4-C

1-A, 2-C, 3-B, 4-D

1-D, 2-A, 3-C, 4-B

Solution

Explanation:

Lysosmes are popularly known as 'suicidal bags'. They play a role in cell death. The main function of the centriole is to help with cell division in animal cells. The centrioles help in the formation of the spindle fibers that separate the chromosomes during cell division (mitosis). The Golgi apparatus is responsible for transporting, modifying and packaging proteins and lipids into vesicles for delivery to targeted destinations. The smooth ER is involved in the synthesis of lipids.

(1) Lysosomes	(C) Suicidal bags
(2) Centriole	(B) Spindle formation
(3) Processing & packaging of cell secretions	(D) Golgi apparatus
(4) Synthesis of lipids	(A) Smooth endoplasmic reticulum

Question 6
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Match the following with the correct response:

(1) Largest cell (A) Mycoplasma

(2) Smallest cell (B) Bacteria

(3) Single cell (C) Amoeba

(4) Prokaryotic cell (D) Ostrich egg

A
1-B, 2-D, 3-A, 4-C

B
1-C, 2-B, 3-D, 4-A

C
1-A, 2-C, 3-B, 4-D

D
1-D, 2-A, 3-C, 4-B

Solution

Explanation:

A prokaryote is a unicellular organism like bacteria that lacks a membrane-bound nucleus (karyon), mitochondria, or any other membrane-bound organelle. The word prokaryote comes from the Greek language - pro is "before" and karyon is "nut or kernel". Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. Without a cell wall, they are unaffected by common antibiotics that target cell wall synthesis. Mycoplasma species are the smallest free-living organisms. Ostrich egg is the largest cell.

(1) Largest cell (D) Ostrich egg

(2) Smallest cell (A) Mycoplasma

(3) Single cell (C) Amoeba

(4) Prokaryotic cell (B) Bacteria
Question 7
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Match the following with correct response.
(1) Aerenchyma
(2) Parenchyma
(3) Chlorenchyma
(4) Cork

(A) Permanent tissue
(B) Thin walled packing cells
(C) Buoyancy
(D) Photosynthesis

A
1-A, 2-C, 3-B, 4-D

B
1-C, 2-B, 3-D, 4-A

C
1-D, 2-A, 3-C, 4-B

D
1-B, 2-D, 3-A, 4-C

Solution

Explanation:

In hydrophytes such as water hyacinth, Hydrilla etc., large air cavities are present in parenchyma to give buoyancy to plant, such type of parenchyma is called aerenchyma. . Parenchyma are thin walled cells found in soft parts of the plant. Chlorenchyma is responsible for photosynthesis. Cork is a permanent tissue.
Question 8
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Match the following with correct response.
(1) Collenchyma
(2) Sclereids
(3) Sclerenchyma
(4) Xylem & phloem

(A) Flexibility in plants
(B) Lignin deposition
(C) Grit cells
(D) Conduction

A
1-D, 2-A, 3-C, 4-B

B
1-C, 2-B, 3-D, 4-A

C
1-B, 2-D, 3-A, 4-C

D
1-A, 2-C, 3-B, 4-D

Solution

Explanation:

The tissue which is responsible for flexibility in plants is Collenchyma. Sclereids are called grit cells. Lignin deposition take place in sclerenchyma . Xylem and phloem involved in the conduction of water and the food.
Question 9
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Choanocytes are characteristic of

A
Mollusca

B
Protozoa

C
Porifera

D
Echinodermata.

Solution

Explanation:

Choanocytes are cells that line the interior of asconoid, syconoid and leuconoid body type. They are characteristic of Porifera kingdom. Choanocytes (also known as "collar cells") are cells that line the interior of asconoid, syconoid and leuconoid body type spongesthat contain a central flagellum, or undulipodia, surrounded by a collar of microvilli which are connected by a thin membrane. They make up Choanoderm, a type of cell layer found in sponges.
Question 10
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Match the following with correct response.

(1) Monera

(2) Protista

(3) Fungi

(4) Plantae

(A) Unicellular, eukaryotic

(B) Multicellular, autotrophic cell wall

(C) Multicellular, heterotrophic, cell wall

(D) Prokaryotic

A
1-A, 2-C, 3-B, 4-D

B
1-D, 2-A, 3-C, 4-B

C
1-B, 2-D, 3-A, 4-C

D
1-C, 2-B, 3-D, 4-A

Solution

Explanation:

Monera means single was a kingdom that contained unicellular organisms with a prokaryotic cell organization (having no nuclear membrane), such as bacteria. They are single-celled organisms with no true nuclear membrane in prokaryotic organism

Protists are eukaryotic organisms that cannot be classified as a plant, animal, or fungus. They are mostly unicellular, but some, like algae, are multicellular. Kelp, or 'seaweed,' is a large multicellularprotist that provides food, shelter, and oxygen for numerous underwater ecosystems

A fungus is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and moulds as well as the more familiar mushrooms. These organisms are classified as a kingdom Fungi, which is separate from the other eukaryotic life kingdoms of plants and animals A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. Fungi are multicellular and heterotrophs in nature.

Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae.The term is today generally limited to the green plants. This includes the flowering plants and other gymnosperms, ferns, hornworts, mosses and the green algae, and excludes the red and blue algae. Green plants have cell walls containing cellulose and obtain most of their energy from sunlight by photosynthesis by primary chloroplasts, derived from endosymbosis with cyanobacteria.

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Re-Attempt Weekly Quiz Competition

(1) Largest cell	(A) Mycoplasma
(2) Smallest cell	(B) Bacteria
(3) Single cell	(C) Amoeba
(4) Prokaryotic cell	(D) Ostrich egg

Mix Test 1

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Mix Test 1

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SHARING IS CARING

Question 1

Solid

gas

Ionic

Liquid

Solution

Question 2

Neither A nor B

Both A and B.

Statement A

Statement B

Solution

Question 3

Nitrogen and oxygen

Hydrogen and oxygen

Helium and Nitrogen

Hydrogen and Helium

Solution

Question 4

Phosphorus

Nitrogen

Carbon

Arsenic

Solution

Question 5

1-C, 2-B, 3-D, 4-A

1-B, 2-D, 3-A, 4-C

1-A, 2-C, 3-B, 4-D

1-D, 2-A, 3-C, 4-B

Solution

Question 6

1-B, 2-D, 3-A, 4-C

1-C, 2-B, 3-D, 4-A

1-A, 2-C, 3-B, 4-D

1-D, 2-A, 3-C, 4-B

Solution

Question 7

1-A, 2-C, 3-B, 4-D

1-C, 2-B, 3-D, 4-A

1-D, 2-A, 3-C, 4-B

1-B, 2-D, 3-A, 4-C

Solution

Question 8

1-D, 2-A, 3-C, 4-B

1-C, 2-B, 3-D, 4-A

1-B, 2-D, 3-A, 4-C

1-A, 2-C, 3-B, 4-D

Solution

Question 9

Mollusca

Protozoa

Porifera

Echinodermata.

Solution

Question 10

1-A, 2-C, 3-B, 4-D

1-D, 2-A, 3-C, 4-B

1-B, 2-D, 3-A, 4-C

1-C, 2-B, 3-D, 4-A

Solution

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