MSBSHSE Class 9 Science Solution-Classification of plant

MSBSHSE Class 9 Science Chapter 6 Solution – Classification of Plants

MSBSHSE Class 9 Science Chapter 6 Solution – Classification of Plants

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MSBSHSE CLASS 9 SCIENCE CHAPTER 6 SOLUTION – CLASSIFICATION OF  PLANTS 

Q 1) Match the proper terms from columns A and C with the description in column B. 

Solution – 

             A                     B                       C
Thallophyta These are mainly Grow in water Algae
Bryophyta These plants Needs water for Reproduction Moss
Pteridophyta Tissues are present for conduction of water and food Fern
Gymnosperm No Natural covering on seeds Cycas
Angiosperm Seeds are formed in Fruits Tamarind

 

Q2) Complete the sentences by filling in the blanks and explain those statements. 

a) ……. plants have soft and fibre – like body

Solution – Thallophyta

b) ……………….. is called the‘ amphibian’ of the plant kingdom. 

Solution – Bryophyta

c) In pteridophytes, asexual reproduction occurs by ……………….. formation and sexual reproduction
occurs by ………………..formation.

Solution – Spore  , Zygote

d) Male and female flowers of………………..are borne on different sporophylls of the same plant. 

Solution – Gymnosperms

Q 3) Answer the following question in your own words 

a) Write the charateristics of subkingdom Phanerogams. 

Solution –

Phanerogams are the plants that posses special structure for reproduction and produces Seeds are known as phanerogams

after the process of reproduction and the seed is formed and the contains the embryo and Stored food

at the time of germination the stored food is used for the growth initial growth of embryo

the Phanerogams are further classified as

1)  Gymnosperms

2) Angiosperms

2) Distinguish between monocots and dicots. 

Solution –

  Monocot      Dicot
Seed Contain 1 cotyledon Contain 2 cotyledon
Root Have fibrous root system Have Tap root system
Stem May have hollow ,disc, or false stem

Ex

1)     Hollow – Bamboo

2)     Disc like – Onion

3)     False –  Banana

Have very Strong & Hard stem

Ex – Banyan tree

Leaf They have Parallel leaf Venation They posses Reticulate Venation
Flower Flowers are Trimerous

Trimerous – flowers have 3 parts or are in their multiple

Flowers are Tetramerous or Pentamerous

Tetramerous – flower have 4 parts or are in their multiple

Pentamerous – flowers have 5 parts or are in their multiple

Example Cereals Pulses

 c) Write a paragraph in your own words about the ornamental plants called ferns. 

Solution –

Ferns are mainly grown in the gardens because the ferns have beautiful leaves

the ferns posses leaves , stem , and roots but they do not produce flowers and seed

because of their attractive appearance they are use as Ornamental plants in the garden

d)  Sketch, label and describe the Spirogyra.

MSBSHSE class 9 Classification of plants solution

Spirogyra –

these plants mainly grows in water

they don’t posses parts such as root, stem, flower

they are Autotrophic because they poses chlorophyl and due it they can perform Photosynthesis

they could be vary in size

e) Write the characteristics of the plants belonging to division Bryophyta 

Solution –

The plants are thalloid, multicellular and are autotrophic

The Bryophyta are called as Amphibians of the kingdom plant because they grow in land but require water for the the reproduction

the plants are thalloid and  multicellular and are Autotrophic
The Bryophyta  reproduce by spore formation

Structure  of  Bryophytes –
it is  flat &  ribbon-like long,

These plants are without true roots, stem and leaves.

But Instead of that  they posses stem-like or
leaf-like parts and root-like rhizoids.

These plants  do not have specific tissues for conduction of food  and Water

example –  Riccia , Anthoceros , Marchantia , Moss

6 )  Which criteria are used for the classification of plants?  Explain with reasons 

The presence or absence of organs is the first criterion for classification of plants.
The presence or absence of separate conducting tissues for conduction of water and food

the very  next consideration for classification  is that  Do the plants bear
seeds?

reason – If they have then they are called Flowering plants & if they dont  have they are called as Non Flowering plants

The Next  criteria for classification of plant is  whether the seeds are enclosed in a
fruit or not

Reason  is  that if seeds are enclosed in fruit they are known as Angiosperm and if seeds are naked they are known as Gymnosperm
Plants are also classified on the basis of  the number of
cotyledons present in the seed
Reason if the seed have 1 cotyledon it is known as monocot

if the seed have 2 cotyledons it known as dicot

MSBSHSE Class 9 science solution classification of plants

https://en.wikipedia.org/wiki/Plant_taxonomy

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