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Morphology of Flowering Plants

Multiple Choice Questions

31.

The placenta is attached to the developing seed near the

Testa
Hilum
Micropyle
Chalaza

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32.

Which of the following plants is used to extract the blue dye?

Trifolium
Indigofera
Lupin
Cassia

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One Word Answers

33.

Name the body part modified for food storage in the following

a. Carrot

b. Colocasia

c. Sweet potato

d. Asparagus

e. Radish

f. Potato

g. Dahlia

h. Turmeric

i. Gladiolus

j. Ginger

k. Portulaca

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Short Answer Type

34. Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of O₂, root growth is restricted or completely stopped. How do the plants growing in marshlands or swamps obtain their O₂required for root respiration?

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Fill In the Blanks

35.

In swampy areas like the Sunderbans in West Bengal, plants bear special kind of roots called _______.

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36.

In aquatic plants like Pistia and Eichhornia, leaves and roots are found near _______.

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37.

Reticulate and parallel venation are characteristic of _____________ and

_____________ respectively.

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One Word Answers

38.

Which parts in ginger and onion are edible?

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Short Answer Type

39.

Omprakash used to go to vegetable market with his grandfather, a retired biology teacher.

Grandfather told Omprakash that chilies, brinjal and tomato belong to the same family of plants and asked him to find out similarity in these plants. Read the above passage and answer the following questions:-

I. Identify the family to which these plants belong.

II. What are the characteristic features of the family?

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40.
Pointing towards a sunflower plant, the father asked Kailash, a biology student to show him the flower of this plant. Kailash pluck flowering twig and pointed towards the big yellow structure at

the tip of the twig. Father laughed and clarified that it is not a single flower but a group of

several flowers arranged in a disc-like structure. Read the above passage and answer the

following questions:-

I. What is inflorescence?

II. Define racemose and cymose inflorescence?

I. Inflorescence is an axis bearing a cluster of flowers in a particular manner.

II. In the racemose type of inflorescence, the main axis possesses terminal bud which grows indefinitely giving rise to lateral and axillary flowers. In cymose type, the main axis terminates into a flowers and further growth takes place by lateral branches which arises below the terminal flower.

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