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Flower CW

This biology worksheet for Std IX focuses on the anatomy and functions of flowers, including identification of parts, definitions of terms, and distinctions between various floral types. It includes questions on the structure of flowers, reasons for certain characteristics, and assertions related to flower anatomy. Students are also required to label diagrams and select correct alternatives based on assertions and reasons.

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Atharvva Modi
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15 views2 pages

Flower CW

This biology worksheet for Std IX focuses on the anatomy and functions of flowers, including identification of parts, definitions of terms, and distinctions between various floral types. It includes questions on the structure of flowers, reasons for certain characteristics, and assertions related to flower anatomy. Students are also required to label diagrams and select correct alternatives based on assertions and reasons.

Uploaded by

Atharvva Modi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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ARYA VIDYA MANDIR BANDRA WEST

BIOLOGY WORKSHEET

Std - IX​ ​ ​ ​ THE FLOWER

Q. Name the following:

i)​ The most attractive part of the flower.


ii)​ The female reproductive part of the flower.
iii)​ Coloured sepals.
iv)​ A bisexual flower.
v)​ The expanded tip of the pedicel bearing floral parts.
vi)​ A condition in which petals are united.
vii)​ The male reproductive organ of the flower.
viii)​ A monocot plant which contains female and male flowers on the plant.
ix)​ A condition in which the sepals are united.
x)​ A term used for fused sepal and petal.

Q. Define the following:

i. ii. Pistillate iii. Neuter iv. Placenta v. vi.


Complete flower flower Monadelphous Unisexual
flower flower flower

vii. viii. ix. x. xi.


Pedicel Perianth Polypetalous Diadelphous Polyadelphous
flower flower

Q. Distinguish between the following:

i)​ Style and Filament.


ii)​ Gamosepalous and Polysepalous.
iii)​ Essential and non-essential (or accessory) whorls.
iv)​ Complete and Incomplete flower
v)​ Monoecious and Dioecious

Q. Give reasons:

i)​ Some plants have nectaries.


ii)​ Petals are brightly coloured.

Q. State the function of the following:

i)​ Calyx ii) Corolla iii) Placenta iv) Style


v) Anther vi) Sepals
Q. Answer the following:

i)​ What is placentation?


ii)​ Explain the structure of the carpel.

Q. Draw a neat labelled diagram of a typical stamen.

Q. Study the figure and answer the questions that follow:

i) Label the parts 1 to 5 in the figure.


ii) Name the structure shown in the figure.
iii) Does it belong to gynoecium or androecium?
Q. Select the correct alternatives from the following.

i) Assertion (A): Stamens are the female reproductive parts of a flower.​


Reason (R): Stamens produce pollen grains which contain male gametes.

a) Both A and R are true, and R is the correct explanation of A.​


b) Both A and R are true, but R is not the correct explanation of A.​
c) A is true, but R is false.​
d) A is false, but R is true.

ii) Assertion (A): The function of the sepals is to protect the flower when it is in the
bud stage.​
Reason (R): Sepals are brightly coloured to attract pollinators.

a) Both A and R are true, and R is the correct explanation of A.​


b) Both A and R are true, but R is not the correct explanation of A.​
c) A is true, but R is false.​
d) A is false, but R is true.

iii) Assertion (A): In a complete flower, all four floral whorls are present.
Reason (R): A complete flower must have sepals, petals, stamens, and carpels.

a) Both A and R are true, and R is the correct explanation of A.​


b) Both A and R are true, but R is not the correct explanation of A.​
c) A is true, but R is false.​
d) A is false, but R is true.

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