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Morphology Of Flowering Plants

Question
CBSEENBI11001658
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Explain with suitable examples the different types of phyllotaxy.

Solution

Phyllotaxy refers to the pattern or arrangement of leaves on the stem or branch of a plant. It is usually of three types:
(i) Alternate: In alternate phyllotaxy, a single leaf arises from the node of a branch. This type of phyllotaxy is observed in the sunflower, mustard, and peepal.
(ii) Opposite: In this type the plants has two leaves arising from the node in opposite directions. It is found in guava.
(iii) Whorled: Plants with whorled phyllotaxy have three or more leaves arising from the node. It is found in Alstonia.

Some More Questions From Morphology of Flowering Plants Chapter

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.

Describe the various types of placentations found in flowering plants.

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