Frank ICSE Class 9 Biology Solutions

Frank ICSE Solutions for Class 9 Biology – Respiration in Plants

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Frank ICSE Solutions for Class 9 Biology – Respiration in Plants

PAGE NO: 87

Solution 1:
Frank ICSE Solutions for Class 9 Biology - Respiration in Plants 1

Solution 2:
Frank ICSE Solutions for Class 9 Biology - Respiration in Plants 2

Solution 3:
Frank ICSE Solutions for Class 9 Biology - Respiration in Plants 3

Solution 4:
Yes, respiration is the reverse of photosynthesis.

Solution 5:

  1. – (b) nutrients are oxidized without using molecular oxygen by the process of fermentation.
  2. – (c) is the best organic substrate for respiration.
  3.  – (a) partial breakdown of food substance.
  4.  – (e) the series of change from glucose to pyruvic acid in respiration.
  5.  – (d) the intermediate substance in the breakdown of glucose.

PAGE NO: 88

Solution 6:
Frank ICSE Solutions for Class 9 Biology - Respiration in Plants 4

Solution 7:
(a) Anaerobic
(b) Glycolysis
(c) Pyruvic acid
(d) Oxygen
(e) Cytoplasm

Solution 8:
(a) False
(b) False
(c) False
(d) False
(e) False

Solution 9:
(a) To show that heat is evolved during respiration
(b) In flask A, moist seeds respire and produce heat that increases the temperature.
(c) If formalin was not used, bacteria will grow on the dry seeds and respire anaerobically to produce a little heat.

PAGE NO: 89

Solution 10:
glucose ATP

Solution 11:
Frank ICSE Solutions for Class 9 Biology - Respiration in Plants 5

Solution 12:
(a) To absorb carbon dioxide produced during respiration
(b) If these are not soaked in disinfectant, the bacterial growth may be there in the tube Y and accurate result may not be obtained due to bacterial respiration.
(c) The germinating peas respire and oxygen is used which create a vacuum in the tube. So coloured water has risen in tube1.
(d) Respiration
(e) It is defined as the stepwise oxidation of glucose in the living cells to release energy.

Solution 13:
(a) mitochondria
(b) Fermentation

Solution 14:
Frank ICSE Solutions for Class 9 Biology - Respiration in Plants 6

Solution 15:
Frank ICSE Solutions for Class 9 Biology - Respiration in Plants 7

Solution 16:
(a) Respires
(b) Day and night
(c) Aerobic respiration
(d) Rises
(e) Controlled manner

PAGE NO: 90

Solution 17:
(a) Respiration
(b) ATP
(c) Aerobic respiration
(d) Anaerobic respiration
(e) Caustic potash and KOH
(f) Lime water
(g) Carbon dioxide and water
(h) Ethyl alcohol and carbon dioxide

Solution 18:

(i) (c) Glucose is converted to carbon dioxide and water, releasing energy.
(ii) (d) Glycolysis, Kreb’s cycle, electron transfer
(iii) (c) Energy is left in alcohol.
(iv) (d) To accept hydrogen and form water.
(v) (b) CO2 and alcohol
(vi) (c) mitochondria
(vii) (b) Hens Krebs
(viii) (d) fermentation
(ix) (b) ATP
(x) (c) ATP
(xi) (b) Two
(xii) (a) In cytoplasm
(xiii) (c) 673 Kcal
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Frank ICSE Solutions for Class 9 Biology – Understanding Ecosystems

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Frank ICSE Solutions for Class 9 Biology – Understanding Ecosystems

PAGE NO: 94

Solution 1:
Environment is the sum of all external conditions and influences that affect organisms. The environment may be divided into biotic i.e. living and abiotic i.e. non-living components.

Solution 2:
Ecosystems are units consisting of living things and their specific habitats in the biosphere where living things interact with each other and their environment.

Solution 3:
Man made ecosystem is formed by major human modification or alteration in the natural environment. Examples of man-made ecosystems are aquarium, park, grassland, garden etc.

Solution 4:
Two major types of ecosystems are natural ecosystem and artificial ecosystem.

Solution 5:
Two features of forests are:

  1. It includes a complex assemblage of different kinds of biotic and abiotic factors.
  2. The temperature and rainfall conditions of a place determine the nature and characteristics of forests.

Solution 6:
The trees in coniferous forests are found in single strands with no undergrowth. Plants predominantly found here include firs, pines, spruces and hemlock while the ground is covered with mosses, grasses, sedges and herbs that are adapted to cold.

Solution 7:
Tropical rainforests are found in regions that experience high temperature, high humidity, heavy and well-distributed rainfall all year round. These regions lack seasonal changes and there is little difference between the length of days and nights.
Tropical rainforests mainly occur inside the World’s equatorial regions. They are restricted to the small land area between the Tropic of Capricorn and the Tropic of Cancer.

Solution 8:
Forest biome refers to the naturally occurring community of flora and fauna occupying the forest.
Features of forest biomes are:

  1. In tropical rainforest biomes, there is an amazing biodiversity of plants and animals. Trees are tall, with buttressed trunks and shallow roots, mostly evergreen, with large dark green leaves. Plants such as orchids, bromeliads, vines, lianas, ferns, mosses, and palms are present in tropical forests. Fauna include numerous birds, bats, amphibians, reptiles, small mammals, and a huge diversity of insects.
  2. In deciduous rainforest biomes, many types of tall and short trees, shrubs, herbs, mosses and lichens are found occupying five different layers. Also a huge variety of fauna like panda, brown bear, hedgehog etc are found.
  3.  Not much biodiversity occurs in coniferous forest biomes. The trees here are found in single strands with no undergrowth. Plants predominantly found here include firs, pines, spruces and hemlock while the ground is covered with mosses, grasses, sedges and herbs that are adapted to cold. Fur bearing animals are found abundantly like brown bear, fox, mink, beavers, deer and large birds of prey like red tailed hawks. Many animals migrate or hibernate during the extremely cold winters.

Solution 9:
Frank ICSE Solutions for Class 9 Biology - Understanding Ecosystems 1

Solution 10:
(i) (d) all plants and animal species along with environment.
(ii) (c) an artificial ecosystem
(iii) (c) communities of organisms interacting with one another
(iv) (c) Tansley
(v) (c) 100-150 cm
(vi) (b) Decomposers

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Frank ICSE Solutions for Class 9 Biology – Being Alive – The Cell- A unit of Life

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Frank ICSE Solutions for Class 9 Biology – Being Alive – The Cell- A unit of Life

PAGE NO : 25

Solution 1:
All living organisms are made up of cells. Cells are the building blocks of all organisms and they give structural and functional stability to the organisms. All the metabolic processes needed to keep an organism alive occur at the cellular level. Hence cell is said to be the basic unit of life.

Solution 2:
In 1839, M.J. Schleiden and T. Schwann proposed the cell theory. This was further expanded by Virchow in 1858. The main features of the cell theory as known at present are:

  1.  All living organisms are composed of cell. Hence cell is the structural unit of living organisms.
  2.  All cells arise from pre-existing cells of the similar kind by cell division.
  3. The chemical composition and metabolism of all cells is basically alike.

Solution 3:
Cell is the smallest structural and functional unit of all living organisms and is a membrane bound structure enclosing the protoplasm.
The two types of cells are:

  1.  Prokaryotic cells – These cells lack a well-organised nucleus and membrane bound organelles. They are usually found in unicellular organisms, which are referred to as prokaryotes. Example of prokaryotes are bacteria and blue-green algae.
  2. Eukaryotic cells – These cells possess a well-organised nucleus and membrane bound organelles. Organisms made up of eukaryotic cells are called eukaryotes. Examples of eukaryotes are plants and animals.

Solution 4:
The organelles present in a typical cell are:

  1.  Mitochondria
  2.  Endoplasmic reticulum
  3. Plastid
  4.  Golgi body
  5.  Vacuoles
  6.  Lysosomes
  7.  Centrosomes
    (Write any 5)

Solution 5:
(a) Robert Hooke discovered and named cells.
(b) Virchow stated that new cells originate only from pre-existing cells (omnis cellula e cellula).
(c) Schleiden found that all plant cells have essentially similar structure.
(d) Schwann observed that all animal cells are basically similar and lack cell wall.

Solution 6:
Frank ICSE Solutions for Class 9 Biology - Being Alive - The Cell- A unit of Life 1

Solution 7:
(a) Mitochondria – It is the powerhouse of the cell and provides energy for carrying out all the vital life activities of the cell.
(b) Ribosomes – It is the site of protein synthesis.
(c) Cell membrane – It gives definite shape to the cell, protects the internal cell contents and allows entry and exit of specific substances into and out of the cell.

PAGE NO : 26

Solution 8:
Plastids are self-replicating organelles present only in plant cells and absent in animal cells. They are of three types:

  1. Chloroplast – Green coloured plastids (due to presence of chlorophyll)
  2. Chromoplast– Coloured plastids (except green colour)
  3. Leucoplast – Colourless plastids

The main functions of plastids are:

  1. Chloroplasts trap solar energy and use it to synthesize carbohydrates from carbon dioxide and water by the process of photosynthesis.
  2. Chromoplasts attract insects and other animals to ensure pollination and dispersal of fruits.
  3. Leucoplasts store starch, proteins or lipids in cell.
    (Write any 2 functions)

Solution 9:
During starvation, lysosomes burst and release their powerful enzymes, which act on their own cellular organelles and digest them. This results in cell death. Hence lysosomes are called suicidal bags.

Solution 10:
ER – Endoplasmic Reticulum
SER – Smooth Endoplasmic Reticulum
RER – Rough Endoplasmic Reticulum

Solution 11:
Mitochondria contains enzymes necessary for the oxidation of carbohydrates and release energy needed for all vital life activities in the form of ATP. Hence they are called powerhouses of the cell.

Solution 12:
Nucleus controls all the metabolic activities of the cell. It regulates cell division. Without nucleus, the cell dies and it cannot divide. Hence nucleus is the controller of cell.

Solution 13:
Frank ICSE Solutions for Class 9 Biology - Being Alive - The Cell- A unit of Life 2

Solution 14:
(a) Chloroplasts are the kitchens of the cell. They trap solar energy and use it to synthesize carbohydrates from carbon dioxide and water by the process of photosynthesis.
(b) Chromosomes are the hereditary material of the nucleus, concerned with the transmission of hereditary traits from parents to offspring.
(c) Endoplasmic Reticulum increases the surface area of the cytoplasm for different metabolic activities of the cell.

Solution 15:
(a) Acetabularia
(b) Deoxyribonucleic acid
(c) Theory
(d) Ostrich
(e) Nucleus

Solution 16:
Platform or work place for synthesis of proteins – Ribosomes
Power house of cells – Mitochondria
Help in formation of cell plate during cell division – Golgi complex
Site for photosynthesis – Chloroplast
Control tower of cell – Nucleus
Structure bearing genes – Chromosomes

Solution 17:
a – Cell membrane
b – Nucleus
c – Chromatin
d – Nuclear membrane
e – SER
f – Mitochondria
g – Golgi vesicles
h – Golgi complex
i – RER
j – Ribosomes

Solution 18:
(a) Robert Hooke
(b) Schleiden and Schwann
(c) Nerve cell
(d) Fibres of ramie
(e) ATP
(f) The cell of Mycoplasma laidlawii
(g) Cell lacking a well-organised nucleus and membrane bound organelles is called prokaryotic cell.

PAGE NO : 27

Solution 19:
a – Plasmodesmata
b – Nucleolus
c – Mitochondria
d – Golgi apparatus
e – Chloroplast
f – cell membrane
g – cell membrane
h – ER
i – Microtubule

Solution 20:

  1. (d) cells are functional and structural unit of plants and animals
  2. (a) DNA
  3. (c) plastid
  4. (a) nucleus membrane
  5. (b) Altman
  6. (b) Robert Hooke
  7. (a) Robert Hooke

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