Consider the following trees : 1. Jackfruit (Artocarpus heterophyllus) 2. Mahua (Madhuca indica) 3. Teak (Tectona grandis) How many of the above are deciduous trees?
Only two
Identifying Deciduous Trees: Jackfruit, Mahua, and Teak
Understanding the difference between deciduous and evergreen trees is an important concept in botany and ecology. Deciduous trees are those that shed their leaves seasonally, usually during the dry or cold season. This is a natural adaptation to conserve water or energy when conditions are unfavorable for photosynthesis.
Let's examine the trees mentioned in the question:
- Jackfruit (Artocarpus heterophyllus): The Jackfruit tree is generally considered an evergreen tree. While it does shed older leaves throughout the year, it does not lose all or most of its leaves during a specific season like deciduous trees do. It remains green year-round.
- Mahua (Madhuca indica): The Mahua tree is typically classified as a deciduous tree. It sheds its leaves during the dry season, usually between February and April in India, before new leaves and flowers emerge.
- Teak (Tectona grandis): Teak is a well-known example of a deciduous tree. It sheds its leaves during the dry season to conserve water, usually around November to January, depending on the climate.
Based on this analysis, we can determine which of the listed trees are deciduous.
| Tree Name | Scientific Name | Classification (Deciduous/Evergreen) |
|---|---|---|
| Jackfruit | Artocarpus heterophyllus | Evergreen |
| Mahua | Madhuca indica | Deciduous |
| Teak | Tectona grandis | Deciduous |
From the table, it is clear that Mahua and Teak are deciduous trees, while Jackfruit is an evergreen tree. Therefore, out of the three trees listed, two are deciduous trees.
Revision Table: Key Tree Classifications
| Feature | Deciduous Trees | Evergreen Trees |
|---|---|---|
| Leaf Shedding | Shed all or most leaves seasonally (dry/cold period) | Shed leaves gradually throughout the year; remain green |
| Purpose of Shedding | Conserve water and energy during unfavorable conditions | Continuous replacement of older leaves |
| Examples | Mahua, Teak, Maple, Oak, Birch | Jackfruit, Pine, Fir, Spruce, Holly |
Additional Information: Importance of Tree Classification
Classifying trees as deciduous or evergreen helps us understand their ecological roles and adaptations to different climates. Deciduous forests are common in temperate regions with distinct seasons and tropical regions with pronounced dry seasons. Evergreen forests are found in various climates, including tropical rainforests and boreal regions.
Understanding these classifications is important for:
- Ecology: It affects forest structure, light penetration to the forest floor, and nutrient cycling.
- Forestry: It guides management practices, timber harvesting schedules (like for Teak), and species selection for plantations.
- Biodiversity: Different types of trees support different plant and animal life. Mahua flowers and fruits, for instance, are important for local wildlife and communities.
- Climate Adaptation: The leaf-shedding strategy is a key adaptation to survive challenging environmental conditions.
Important Questions from Geomorphology
Which one of the following is not an igneous rock?
Which of the following statements is/are correct?
1. Hypocenter is the point on the surface of the Earth, nearest to the focus.
2. Velocity of earthquake waves is higher in denser materials.
3. P waves move faster and are the first to arrive at the surface of the Earth.
Select the correct answer using the code given below:
Which one of the following is the lowermost/innermost intrusive igneous rock?
The formation of ‘tors’ on small rocky hills is associated with which among the following?
Which one of the following statements about metamorphic rocks is not correct?
