Photosynthesis can be characterised as a process by which green plants produce organic substances by converting light energy. The plants store food in the form of starch which is a polymer of glucose. The solution of iodine converts into a blue-black colour in the presence of starch. Hence, this solution is used as an experimental tool for photosynthesis.

Match the following: Column I Column II i) Autotrophs a) Is the place for light reaction of photosynthesis ii) Photolysis b) Is the place for dark reaction of photosynthesis iii) Bacteria and fungi c) Light reaction iv) Stomata closed d) During night v) By-products of photosynthesis e) Green plants vi) The grana f) Oxygen vii) The stroma g) Decomposers.

i)-(e) Plants are known as autotrophs because they are able to prepare their own food. ii)- (c) Photolysis of water is a first step in light reaction process through which water is broken down into oxygen, hydrogen ion (proton) and electrons. iii)-(g) Bacteria and fungi can decompose rotten material and increase soil fertility. iv)-(d) Photosynthesis cannot take place at night as photolysis of water would not take place. Stomata help in the exchange of gases like oxygen and carbon dioxide. It remains closed during night. v)-(f) By-products of photosynthesis are glucose and oxygen. vi)-(a) In grana, light reactions of photosynthesis takes place. Thylakoids are arranged in stacks like the piles of coins called grana (singular; granum). vii)-(b) In stroma, dark reaction of photosynthesis takes place. The stroma of the chloroplast contains enzymes required for the synthesis of carbohydrates and proteins. Column I Column II i) Autotrophs e) Green plants ii) Photolysis c) Light reaction iii) Bacteria and fungi g) Decomposers iv) Stomata closed d) During night v) By-products of photosynthesis f) Oxygen vi) The grana a) Is the place for light reaction of photosynthesis vii) The stroma b) Is the place for dark reaction of photosynthesis

Given below is the representation of a certain phenomenon in nature with four organisms (1)-(4). P l a n t → g r a s s h o p p e r → f r o g → s n a k e → ? ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) Name one natural element which all the organisms 2-4 and even 5 are getting from No. 1 for their survival.

Number 1 represents plants which are also called producers as they can make food for them and all other living organisms are depends on them for food either directly on indirectly. Plants produce glucose which is a monosaccharide. There are many micronutrients like carbon, oxygen, etc. and many micronutrients like zinc, magnesium, etc. which is transferred from organism 1 to organism 5.

Ajay Kumar Bhattacharya and Pradeep Singh Solutions for Exercise 1: TEST YOURSELF

Author:Ajay Kumar Bhattacharya & Pradeep Singh

Ajay Kumar Bhattacharya Biology Solutions for Exercise - Ajay Kumar Bhattacharya and Pradeep Singh Solutions for Exercise 1: TEST YOURSELF

Attempt the practice questions from Exercise 1: TEST YOURSELF with hints and solutions to strengthen your understanding. ICSE Self - Study in Biology solutions are prepared by Experienced Embibe Experts.

Questions from Ajay Kumar Bhattacharya and Pradeep Singh Solutions for Exercise 1: TEST YOURSELF with Hints & Solutions

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10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 4

C3 and C4 photosynthesis are operated by _____. (RuBisCO/ PEPcase)

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10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 7

Define iodine test.

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10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 9

Match the following:

Column I	Column II
i) Autotrophs	a) Is the place for light reaction of photosynthesis
ii) Photolysis	b) Is the place for dark reaction of photosynthesis
iii) Bacteria and fungi	c) Light reaction
iv) Stomata closed	d) During night
v) By-products of photosynthesis	e) Green plants
vi) The grana	f) Oxygen
vii) The stroma	g) Decomposers.

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10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 10

Given below is the representation of a certain phenomenon in nature with four organisms 1-4.
Plant--> grasshopper--->frog ---> snake -» ?
1 2 3 4

Name the phenomenon represented.

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10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 10

Given below is the representation of a certain phenomenon in nature with four organisms (1)-(4).

$P l a n t \to g r a s s h o p p e r \to f r o g \to s n a k e \to ? (1) (2) (3) (4) (5)$

Name any one organism that could be shown at No. (5).

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10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 10

Given below is the representation of a certain phenomenon in nature with four organisms (1)-(4).

$P l a n t \to g r a s s h o p p e r \to f r o g \to s n a k e \to ? (1) (2) (3) (4) (5)$

Name the biological process which was the starting point of the whole chain.

MEDIUM

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 10

Given below is the representation of a certain phenomenon in nature with four organisms (1)-(4).

$P l a n t \to g r a s s h o p p e r \to f r o g \to s n a k e \to ? (1) (2) (3) (4) (5)$

Name one natural element which all the organisms 2-4 and even 5 are getting from No. 1 for their survival.

MEDIUM

10th ICSE

IMPORTANT

ICSE Self - Study in Biology>Chapter 5 - Photosynthesis>TEST YOURSELF>Q 10

Given below is the representation of a certain phenomenon in nature with four organisms (1)-(4).

$P l a n t \to g r a s s h o p p e r \to f r o g \to s n a k e \to ? (1) (2) (3) (4) (5)$

What is food web?

Ajay Kumar Bhattacharya and Pradeep Singh Solutions for Exercise 1: TEST YOURSELF

Ajay Kumar Bhattacharya Biology Solutions for Exercise - Ajay Kumar Bhattacharya and Pradeep Singh Solutions for Exercise 1: TEST YOURSELF

Questions from Ajay Kumar Bhattacharya and Pradeep Singh Solutions for Exercise 1: TEST YOURSELF with Hints & Solutions

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