The Flower Short Answer Biology Class-9 ICSE Selina Publishers Solutions Chapter-4. Step By Step ICSE Selina Concise Solutions of Chapter-4 The Flower with Exercise-4 including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type and Structured/Application Questions Solved . Visit official Website CISCE for detail information about ICSE Board Class-9.
The Flower Exe-4 Short Answer Biology Class-9 ICSE Concise Selina Publishers
| Board | ICSE |
| Publications | Selina Publication |
| Subject | Biology |
| Class | 9th |
| Chapter-4 | The Flower |
| Book Name | Concise |
| Topics | Solution of C. Short Answer Type |
| Academic Session | 2023-2024 |
C. Short Answer Type
The Flower Class-9 Biology Concise Solutions
Page 38
Question 1.
Explain briefly the following terms:
(a) Incomplete flower
(b) Staminate flower
(c) Pistillate flower
(d) Bisexual flower
Answer:
(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.
What nis the difference between:
(a) Flower and inflorescence
(b) Petals and petaloid sepals
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. |
Question 3.
Define the terms:
(a) Flower
(b) Inflorescence
(c) Placentation
(d) Bract
(e) Epicalyx
Answer:
(a) Flower is specialized shoot in which the leaves are modified into floral structures.
(b) Inflorescence is the mode of arrangement of flowers on the axis of a plant.
(c) The manner of attachment of ovules to the wall of the ovary is called Placentation.
(d) When a flower arises in the axil of a leaf-like structure, this structure is called Bract.
(e) An additional whorl around the calyx of a flower is called Epicalyx.
Question 4.
Where the following structures/parts located and what are their functions?
(a) Placenta
(b) Thalamus
(c) Anther
(d) Stigma
Answer:
(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
— : End of The Flower C. Short Answer Class-9 ICSE Biology Solutions :–
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