Selina solutions concise biology class 9 icse Solutions for Chapter 4 the flower

Exercises in Chapter 4 the flower Grade 9

Exercise

Questions in Exercise

Mention if the following statements are true(T) or false(F)

(i) Flowers can be complete or incomplete T/F

(ii) A flower typically has six floral whorls. T/F

(iii) Bracts are usually green, but sometimes large and colorful. T/F

(iv) Nasturtium has nectaries T/F

(v) Stamens and carpels are the male and female parts T/F

(vi) The prefix “gamo-“ is used whenever any of the floral whorls are used T/F

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

(viii) Papaya is monoecious plant. T/F

Bougainvillea flower is an example of

(a) Incomplete flower

(b) Having a large nectary

(d) Large colorful bracts

A flower is said to be complete when:

(a) It has the corolla and calyx

(b) It has the corolla and gynoecium

(d) It has all the four whorls.

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

(a) Sepals

(b) Petals

(d) Stamens

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

(a) Ovary

(b) Placenta

(d) Pollen grain

The essential whorls of a flower are the (a) Calyx and corolla (b) Stamen and ovary (c) Calyx and epicalyx (d) Androecium and gynoecium

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

(d) Non-essential (iv) Bombax

(e) Sweet fragrant fluid (v) Pollen sac

Explain the following terms:

(a) Incomplete flower

(b) Staminate flower

(d) Bisexual flower

Distinguish between the following pairs: (a) Flower and inflorescence (b) Petals and petaloid sepals (c) Polyandrous and Polyadephous androecium

Where are the following structures/parts located and what are their functions? (a) Placenta (b) Thalamus (c) Anther (d) Stigma

Why are the following describes as stated: (a) The androecium of pea flower is diadelphous (b) Ray florets of sunflower as neuters (c) Salvia sepals as petaloid

Name the different types of androecium found in flowers.

Name the different types of androecium found in flowers

Name the type of androecium found in (a) China rose (b) Bombax (c) Pea

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

Given alongside are two figures (A & B) of a certain part of a flower. Study the figures carefully and answer the following questions:

(a) Which major organs 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?

What are bracts? State their function.

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

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Chapters in this book

Introducing Biology

Cell: The Unit Of Life

Tissues: Plant And Animal Tissues

The Flower

Pollination And Fertilization

Seeds: Structure And Germination

Respiration In Plants

Five Kingdom Classification

Economic Importance Of Bacteria And Fungi

Nutrition

Digestive System

Skeleton – Movement And Locomotion

Skin – The Jack Of All Trades

The Respiratory System

Hygiene

Diseases: Cause and Control

Aids To Health

Health Organizations

Waste Generation and Management