The Flower Short Answer Biology Class-9 ICSE Selina Publishers

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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