The Flower Concise ICSE Class-9 Solutions Selina Publishers

Concise Biology Solutions Chapter-4 The Flower ICSE Class-9

The Flower Concise ICSE Class-9 Solutions Selina Publishers Chapter-4. We Provide Solutions of Progress Check , MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type Questions and Structured / Applications / Skill Type Questions of Chapter-4  The Flower. Visit official Website CISCE  for detail information about ICSE Board Class-9.

The Flower Concise ICSE Class-9 Solutions Selina Publishers


–: Select Topics :–

Progress Check,

A.MULTIPLE CHOICE TYPE,

B.VERY SHORT ANSWER TYPE,

C.SHORT ANSWER TYPE,

D.LONG ANSWER TYPE

E.STRUCTURED/APPLICATION/SKILL TYPE

 


Progress Check Chapter-4 The Flower ,Selina Concise Biology Solutions

  Question 1

Progress Check Chapter-4 The Flower Selina Biology Solutions

      (vii)Stigma may be simple or divided into two or more lobe T/F

     (viii) Papaya is monoecious plant T/F

Answer. 1-

(i) True

(ii) False,…..  four whorls

(iii) True

(iv)True

(v)False….Stamens are male and Carpel are female part

(vi)True

(vii)True

(viii) False……papaya is diocious plant.


A. Multiple Choice Questions: Chapter-4 The Flower ,Selina Concise Biology Solutions

 Question.1 

Bougainvillea flower is an example of

(a) incomplete flower

(b) having a large nectary

(c) water pollination

(d) large colourful bracts

Answer 1

(d) large colourful bracts

Question.2 

.A flower is said to be complete when:

(a) It has the corolla and calyx

(b) It has the corolla and gynoecium

(c) It has the androecium and gynoecium

(d) It has all the four whorls

Answer 2

(d) It has all the four whorls.

Question.3

.The part of the flower that gives rise to the fruit is

(a) Sepals

(b) Petals

(c) Ovary

(d) Stamens

Answer 3

(c) Ovary

Question 4.

The part of the flower that gives rise to the seed is

(a) Ovary

(b) Placenta

(c) Ovule

(d) Pollen grain

Answer 4

(c) Ovule

Question-5

The essential whorls of a flower are the

(a) Calyx and corolla

(b) Stamen and ovary

(c) Calyx and epicalyx

(d) Androecium and gynoecium

Answer 5

(d) Androecium and gynoecium


B. VERY SHORT ANSWER TYPE : Chapter – 4 The Flower Selina Concise Biology Solutions

Question 1

Match the parts in Column A with the flowers or parts of flower in Column B.

Column A Column B
(a) Polyadelphous (i) Polypetalous
(b) Pollen grains (ii) Calyx, corolla
(c) Free petals (iii) Nectar
(d) Non-essential (iv) Bombax
(e) Sweet fragrant fluid (v) Pollen sac

 

Answer 1

 

Column A Column B
(a) Polyadelphous (i) Bombax
(b) Pollen grains (ii) Pollen sac
(c) Free petals (iii) Polypetalous
(d) Non-essential (iv) Calyx, corolla
(e) Sweet fragrant fluid (v) Nectar

 


 

Concise Selina Publishers Biology Solutions Chapter-4 The Flower 9 (C. SHORT ANSWER TYPE )

Question 1

Explain the following terms:

(a) Incomplete flower

(b) Staminate flower

(c) Pistillate flower

(d) Bisexual flower

Answer 1

(a) Incomplete flower – If one or more sets of floral structures are missing, then the flower is called incomplete flower. E.g. American elm.

(b) Staminate flower – when A unisexual flower which contains only the stamens, i.e., then male parts of a flower is called male or staminate flower. E.g. Eastern cottonwood.

(c) Pistillate flower – when A flower which contains only the carpels, i.e., then female parts of a flower is called female or pistillate flower. E.g. Date palm.

(d) Bisexual flower – whenever A flower which contains both stamens and carpels then it is called bisexual or hermaphrodite flower. E.g. Hibiscus.

Question 2

Distinguish between the following pairs:

(a) Flower and inflorescence

(b) Petals and petaloid sepals

(c) Polyandrous and polyadelphous androecium

Answer 2

 

(a) Distinguish between Flower and Inflorescence

 

Flower Inflorescence
Flower is a specialized shoot in which the leaves are modified into floral structures. Inflorescence is the mode of arrangement of flowers on the axis of the plant.

 

(b )Distinguish between Petals and Petaloid sepals

 

Petals Petaloid

sepals

Petals are non-essential parts of a flower which help in protection of reproductive parts and make the flower attractive for pollination. Undifferentiated petals and sepals together form the perianth. When perianth is non-green, it is called a petaloid.

 

(c) Distinguish between Polyandrous and polyadelphous androecium

 

Polyandrous

 androecium

Polyadelphous

androecium

In polyandrous androecium, filaments of the stamens are free. In polyadelphous androecium, filaments of the stamens are united in several groups.

 

Question 3

Where the following structures/parts located and what are their functions?

(a) Placenta

(b) Thalamus

(c) Anther

(d) Stigma

Answer 3

(a) Placenta:

Location: Cushion or swollen region in the ovary

Function: Gives origin to ovules

(b) Thalamus:

Location: Tip of the flower stalk

Function: Bears all the parts of the flower

(c) Anther:

Location: Part of the stamen

Function: Produces male gametes or pollen grains

(d) Stigma:

Location: Terminal knob-like part

Function: Serves as the landing place for pollen grains during pollination

Question 4

Why are the following described as stated :

(a) The androecium pea  of flower is diadelphous

(b) Ray florets of sun flower as neuters

(c) Salvia speals as petaloid

Answer 4

Answer 4 Short Answer Type Chapter-4 The Flower Selina Biology Solutions


D.LONG ANSWER TYPE of Chapter-4 The Flower, Selina Concise Solutions for ICSE Class 9th Biology

 

Question 1

Name the different types of androecium found in flowers.

Answer 1

Types of androecium in flowers:

Polyandrous: When the stamens of a flower are free, then the condition is called polyandrous.

Monadelphous: When the filaments of anthers in a flower are fused into one group, so the condition is called monadelphous.

Diadelphous: When the filaments of anthers in a flower are fused into two groups, therefore the condition is called diadelphous.

Polyadelphous: When the filaments of anthers in a flower are fused into more than two groups, hence the condition is called polyadelphous.

Question 2

Name the type of androecium found in

(a) China rose

(b) Bombax

(c) Pea

Answer 2

(a) China rose: Monadelphous

(b) Bombax: Polyadelphous

(c) Pea: Diadelphous


E. STRUCTURED/ APPLICATION /SKILL TYPE Chapter-4 The Flower Selina Publications Concise Biology Solutions for ICSE Class 9th

 

Question 1

The figure given alongside represents generalized arrangement of the different parts of a bisexual flower. Name the parts numbered 1-10.

bisexual flower.

Answer 1

1: Anther; 2: Filament: 3: Ovule: 4: Placenta; 5: Stigma;

6: Style; 7: Ovary; 8: Petal; 9: Sepal; 10: Receptacle/Thalamus

Question 2

Given below are two figures (A and B) of a. Study the figures carefully and answer the following questions:

certain part of a flower

(a) Which major organ of a flower does the figure A represent? What is the collective term for this organ ?

(b) Are the contents of the pollen sacs in B male or female?

(c) Can you state how the contents of the pollen sacs would come out?

Answer 2

(a) Figure A represents stamen. hence Stamens collectively form Androecium.

(b) Contents of the pollen sacs in B are male gametes.

(c) The contents of the pollen sacs would come out through agents like air, wind, insects leading to pollination in flowers.

Question 3

What are bracts? State their function.

Answer 3

When a flower arises in the axil of a leaf-like structure, this structure is known as bract. Because bracts are large and brightly coloured structures, Therefore they are often mistaken for petals. This helps to attract insects for pollination.

Question 4

Explain the terms Monadelphous, Diadelphous and Polyadelphous. In each case name a flower possessing such an androecium.

Answer 4

Condition of androecium Explanation Example of flower
Mona-

delphous

Filaments of the anthers in a flower are fused into one group Hibiscus
Dia-

delphous

Filaments of the anthers in a flower are fused into two groups Pea
Polya-

delphous

Filaments of the anthers in a flower are fused into more than two groups Bombax

 

Question 10

Name the different types of androecium found in flowers.

Solution 10

Types of androecium in flowers:

Polyandrous: When the stamens of a flower are free, Hence the condition is called polyandrous.

Monadelphous: When the filaments of anthers in a flower are fused into one group, so the condition is called monadelphous.

Diadelphous: When the filaments of anthers in a flower are fused into two groups, then the condition is called diadelphous.

Polyadelphous: When the filaments of anthers in a flower are fused into more than two groups,therefore the condition is called polyadelphous.

Question 11

Name the type of androecium found in

(a) China rose

(b) Bombax

(c) Pea

Solution 11

(a) China rose: Monadelphous

(b) Bombax: Polyadelphous

(c) Pea: Diadelphous

phous

(c) Pea: Diadelphous

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