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Morphology Of Flowering Plants

Question
CBSEENBI11002916
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The material, which arrests cell division, is obtained from

  • Crocus

  • Colchicum

  • Dalbergis

  • Chysanthomum

Solution

B.

Colchicum

Colchicine is an antibiotic drug, which is obtained from Colchicum (family-Liliaceae). It binds to one tubulin molecule an prevents its polymerisation. The depolymerisation of tubulin results in the disappearance of mitotic spindle blocking the cell's mitotic chromosomal division at metaphase and anaphase.

Some More Questions From Morphology of Flowering Plants Chapter

Define the following terms:

(c) actinomorphic

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.

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