Leaf Appendages and Modifications

What is the primary function of leaves?

• Photosynthesis, respiration, and transpiration.

• Water storage and nutrient absorption.

• Providing shade and shelter for animals.

• Producing flowers and fruits.

Give an example of a plant with leaf hooks.

• Bignonia unguiscacti

• Cactus grandis

• Aloe vera

• Ficus elastica

Provide examples of plants with intrapetiolar stipules.

• Gardenia jasminoides

• Rosa rubiginosa

• Tabernaemontana divericata

• Citrus limon

What are interpetiolar stipules?

• Stipules that are found only in flowering plants.

• Stipules of opposite leaves that are fused together to form two stipules on either side of the stem.

• Stipules that grow at the base of the leaf petiole.

• Stipules that are modified into thorns for protection.

What is a foliaceous stipule?

• Stipules modified and enlarged to function like leaves.

• A type of leaf that grows in clusters.

• A structure that supports the stem of a plant.

• A type of flower that has multiple petals.

Provide an example of a plant exhibiting environmental heterophylly.

• Limnophylla heterophylla

• Acer saccharum

• Quercus rubra

• Pinus sylvestris

Give an example of a plant with free lateral stipules.

• Hibiscus rosa-sinensis

• Rosa rubiginosa

• Cucumis sativus

• Solanum lycopersicum

What is a tendrillar stipule?

• Stipules modified into tendrils.

• A type of leaf structure that stores water.

• A flower part that attracts pollinators.

• A root structure that supports climbing plants.

Provide an example of a plant exhibiting developmental heterophylly.

• Eucalyptus globulus

• Quercus robur

• Pinus sylvestris

• Acer saccharum

Provide an example of a plant with leaf tendrils.

• Lathyrus odoratus

• Rosa rubiginosa

• Quercus robur

• Pinus sylvestris