Advertisement

Photosynthesis ICSE Class-10 Concise Selina Biology

Photosynthesis ICSE Class-10 Concise Selina Biology Solutions Chapter-6.  We Provide Step by Step Answer of Progress Check 1, 2, 3, 4 , MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type Questions and Structured / Applications / Skill Type Questions of Exercise-6 Photosynthesis ICSE Class-10 Concise . Visit official Website CISCE  for detail information about ICSE Board Class-10.

Board ICSE
Publications Selina Publishers PVT LTD
Subject Concise Biology
Class 10th
writer HS Vishnoi
Chapter-6 Photosynthesis 
Topics Solutions of MCQs, Very Short ,Descriptive and Structural/Skill Questions and  Progress Check 1, 2, 3, 4
Edition 2021-2022

Photosynthesis ICSE Class-10 Concise Selina Biology Solutions Chapter-6


-: Select Topics :-

Advertisement

A. MULTIPLE CHOICE TYPE

B. VERY SHORT ANSWER TYPE

C. SHORT ANSWER TYPE

D. DESCRIPTIVE TYPE

E. STRUCTURED/APPLICATION/SKILL TYPE

 Progress Check 1, 2, 3, 4


A. MULTIPLE CHOICE TYPE  Photosynthesis ICSE Class-10 Concise Selina Biology

Page 78

Question 1:

The production of starch, and not glucose, is often used as a measure of photosynthesis in leaves because

(a) starch is immediate product of photosynthesis

Advertisement

(b) glucose formed in photosynthesis soon gets converted into starch

(c) starch is soluble in water

(d) sugar cannot be used

Answer 1

(b) glucose formed in photosynthesis soon gets converted into starch

Question 2

The number of water molecules required in the chemical reactions to produce one molecule of glucose during photosynthesis is

(a) six

(b) twelve

(c) eighteen

(d) twenty-four

Answer 2

(b) twelve

Question 3

The rate of photosynthesis is not affected by

Advertisement

(a) light intensity

(b) humidity

(c) temperature

(d) CO2 concentration

Answer 3

(b) humidity

Question 4

Chlorophyll in a leaf is required for

(a) breaking down water into hydrogen and oxygen

(b) emitting green light

(c) trapping light energy

(d) storing starch in the leaves

Answer 4

(c) trapping light energy

Question 5

If the rate of respiration becomes more than the rate of photosynthesis, plants will:

(a) continue to live, but will not be able to store food

(b) be killed instantly

(c) grow more vigorously because more energy will be available

(d) stop growing and die gradually of starvation

Answer 5

(a) continue to live, but will not be able to store food

Question 6

Which one chemical reaction occurs during photosynthesis?

(a) Carbon dioxide is reduced and water is oxidised

(b) Water is reduced and carbon dioxide is oxidised

(c) Both carbon dioxide and water are oxidised

(d) Both carbon dioxide and water are reduced

Answer 6

(a) Carbon dioxide is reduced and water is oxidised

Question 7

The specific function of light energy in the process of photosynthesis is to

(a) reduce carbon dioxide

(b) synthesise glucose

(c) activate chlorophyll

(d) split water molecule

Answer 7

(c) activate chlorophyll

Question 8

A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to

(a) remove chlorophyll from leaves

(b) remove starch from the leaves

(c) ensure that no photosynthesis occurred

(d) ensure that the leaves are free from starch

Answer 8

(d) ensure that the leaves are free from starch

Question 9

During photosynthesis, the oxygen in glucose comes from

(a) CO2

(b) water

Advertisement

(c) both CO2and water

(d) oxygen via air

Answer 9

(a) CO2


B. VERY SHORT ANSWER TYPE Photosynthesis ICSE Class-10 Concise Selina Biology

Page 78-79

Question 1:

Name the following:

(a) The category of organisms that prepare their own food from basic raw materials.

(b) The kind of plastids found in the mesophyll cells of the leaf.

(c) The compound which stores energy in the cells.

(d) The first form of food substance produced during photosynthesis.

(e) The organisms that can be called “natural purifiers” of the air.

(e) The source of carbon dioxide for aquatic plants.

(f) The part of chloroplast where the dark reaction of photosynthesis takes place.

Answer 1

(a) Producers / Autotrophs

(b) Chloroplasts

(c) ATP (Adenosine triphosphate)

(d) Glucose

(e) Carbon dioxide dissolved in water

(f) Stroma

Question 2:

Given below are groups of terms. In each group, the first pair indicates the relationship between the two terms. Complete the second pair accordingly.

(a) Chlorophyll : Magnesium : : Haemoglobin : ………….

(b) Light reaction : Granum : : Dark reaction : ……………

(c) Producers : Autotrophs : : Consumers : …………….

(d) Respiration : Carbon dioxide : : Photosynthesis : ………….

(e) Water and minerals : Xylem : : Prepared food : …………………

Answer :

(a) Chlorophyll : Magnesium : : Haemoglobin : oxygen

(b) Light reaction : Granum : : Dark reaction : Calvin

(c) Producers : Autotrophs : : Consumers : hetrotrophs

(d) Respiration : Carbon dioxide : : Photosynthesis : oxygen

(e) Water and minerals : Xylem : : Prepared food : pholem


C. SHORT ANSWER TYPE  for ICSE Class-10  Chapter 6 Photosynthesis

Page 79

Question 1

Identify the false statements and rewrite them correctly by changing the first or last word only.

(a) Dark reaction of photosynthesis occurs during night time.

(b) Photosynthesis requires enzymes.

(c) Green plants are consumers.

(d) Photosynthesis results in loss of dry weight of the plants.

(e) Photosynthesis stops at a temperature of about 35oC.

(f) Photosynthesis occurs only in cells containing chloroplasts.

(g) Green plants perform photosynthesis.

(h) Algae are autotrophs.

Answer 1

(a) False

Correct Statement: Dark reaction of photosynthesis is independent of light and occurs simultaneously with light reaction.

(b) True

(c) False

Correct Statement: Green plants are producers.

(d) False

Correct Statement: Respiration results in loss of dry weight of the plants.

(e) False

Correct Statement: Photosynthesis stops at a temperature of above 40oC.

(f) True

(g) True

(h) True

Question 2

Fill in the blanks with the appropriate answer from the choices given in the brackets.

(a) The site of light reaction in the cells of a leaf is ………… (cytoplasm, stroma, grana)

(b) The chemical substance used to test the presence of starch in the cell of a leaf is …………. (CaCl2, iodine solution, Benedict solution)

(c) Stroma is ground substance in ……………. (cytoplasm, chloroplast, ribosomes)

(d) The dark reaction of photosynthesis is known as ………….. (Hill reaction, cyclic phosphorylation, Calvin cycle)

(e) In the flowering plants, food is transported in the form of ……………… (sucrose, glucose, starch)

Answer 2

(a) The site of light reaction in the cells of a leaf  grana

(b) The chemical substance used to test the presence of starch in the cell of a leaf is iodine solution

(c) Stroma is ground substance in  chloroplast.

(d) The dark reaction of photosynthesis is known as  Calvin cycle

(e) In the flowering plants, food is transported in the form of  sucrose

Question 3

Are the following statements true or false? Give reason in support of your answer.

(a) The rate of photosynthesis continues to rise as long as the intensity of light rises.

(b) The outside atmospheric temperature has no effect on the rate of photosynthesis.

(c) If you immerse a leaf intact on the plant in ice cold water, it will continue to photosynthesise in bright sunshine.

(d) Destarching of the leaves of a potted plant can occur only at night.

(e) If a plant is kept in bright light all the 24 hours for a few days, the dark reaction (biosynthetic phase) will fail to occur.

(f) Photosynthesis is considered as a process supporting all life on earth.

Read Next 👇 Click on Page Number Given Below 👇

Leave a comment
Insert math as
Block
Inline
Additional settings
Formula color
Text color
#333333
Type math using LaTeX
Preview
\({}\)
Nothing to preview
Insert