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Morphology Of Flowering Plants

Question
CBSEENBI11024917
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Which of the following is true?

  • Umbel is a racemose inflorescence where all stalked flower aggregate on the flat receptacle

  • Raceme is a racemose inflorescence having main axis shortened & flower born acropetally

  • Spadix is a racemose inflorescence having pendulous spike with main axis much flattened.

  • Spike is a racemose inflorescence having sessile flowers

Solution

D.

Spike is a racemose inflorescence having sessile flowers

Spike is a racemose inflorescence that bears sessile flowers in an acropetal fashion, e.g., chaff flower (Achyranthes), bottle brush (Callistemon), Adathoda vasica, Amaranthus.

Some More Questions From Morphology of Flowering Plants Chapter

Define the following terms:

(d) zygomorphic

Define the following terms:
(e) superior ovary

Define the following terms:
perigynous flower

Define the following terms:
epipetalous stamen

Define the following terms:

(a) Racemose and cymose inflorescence

Define the following terms:
(b) Fibrous root and adventitious root

Define the following terms:
(c) Apocarpous and syncarpous ovary

Draw the labelled diagram of the following:
(i) Gram seed     (ii)    V.S. of maize seed

Describe modifications of stem with suitable examples.

Take one flower each of the families Fabaceae and Solanaceae and write its semi-technical description. Also draw their floral diagram after studying them.

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