4. Define coniferous trees. Give two examples
5. What are breathing roots?
B. Answer the following questions in detail.
1. Explain some adaptations in desert plants.
2. How do plants in marshy areas survive? Explain.
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Answers
Answer:
Examples of coniferous trees are larches (Genus Larix) and pines (Genus Pinus). ... In the second division, maples and larches were paired up as deciduous trees, but in the third division, are defined as a Maple is a broadleaf tree and a larch is an coniferous tree.
Breathing Roots. An aerial root may be defined as a root which, for part of the day at least, is exposed to the air. The mangrove mud is rather anaerobic (oxygen poor) and unstable and different plants have root adaptations to cope with these conditions.
Desert plants are adapted to their arid environment in many different ways. ... This adaptation helps cacti reduce water loss by keeping the hot, dry wind from blowing directly across the stomata. The leaves and stems of many desert plants have a thick, waxy covering.
Marshes provide a habitat for many species of plants, animals, and insects that have adapted to living in flooded conditions. The plants must be able to survive in wet mud with low oxygen levels. ... Some can obtain oxygen from the air instead, while others can live indefinitely in conditions of low oxygen.
4.Conifers are trees which produce cones. Almost all of them are evergreen. Examples include pine, fir, cypress. The larch is a deciduous conifer.
5.Respiratory or knee roots (pneumatophores) are characteristic of many species; they project above the mud and have small openings (lenticels) through which air enters, passing through the soft spongy tissue to the roots beneath the mud