Question

1.What is Hydrophytes?
2.What is Mesophytes?
3.What is Xerophytes?

Answer all the 3 questions​

Answer 1

Answer:

1. a plant which grows on or in water

2.a plant which needs only a small amount of water

3. a plant which needs a very little amount of water.

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Answer 2

Answer:

1.Hydrophytes are the plants which live completely or partially submerged in fresh water. ... Hydrophytes have broad leaves with a large number of stomata on their upper surfaces. This characteristic helps them to remove extra amount of water. The most common example of such plants is Water Lily.

Most aquarium plants do best at a pH between 6.5 and 7.8, general hardness of 50 ppm to 100 ppm and alkalinity between 3° and 8° dKH (54ppm – 140 ppm). Nitrates should be below 10 ppm and phosphates below 0.5 ppm to prevent nuisance algae from growing on leaves. Temperature should be between 74° and 80° F.

The most common reason for yellow, brown, or black leaves on aquatic plants is poor water quality. ... Plants rely on the nutrients in your substrate and floating in your water, and depend on your aquarium lights to give them the ideal spectrums of colors for photosynthesis

Brown spots on aquarium plants can be caused by algae, high level of nitrates or something toxic in the water. Algae also clings to the glass. High level of nitrates is also indicated by yellow leaves. Over time, brown spots due to high nitrates turn into holes that go straight through the leaf.

Aquatic plants require special adaptations for living submerged in water, or at the water's surface. The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common.

2.Mesophytes are terrestrial plants which are neither adapted to particularly dry nor particularly wet environments. An example of a mesophytic habitat would be a rural temperate meadow, which might contain goldenrod, clover, oxeye daisy, and Rosa multiflora.

3.A xerophyte is a species of plant that has adaptations to survive in an environment with little liquid water, such as a desert or an ice- or snow-covered region in the Alps or the Arctic. Popular examples of xerophytes are cacti, pineapple and some Gymnosperm plants. 

Height: Eastern white pine: 45 – 63 m

Xerophyte, any plant adapted to life in a dry or physiologically dry habitat (salt marsh, saline soil, or acid bog) by means of mechanisms to prevent water loss or to store available water. Succulents (plants that store water) such as cacti and agaves have thick, fleshy stems or leaves.

Xerophyte survival characteristics:

• Thick cuticle.
• Stomatal closure.
• Reduction in # of stomata.
• Stomata hidden in crypts or depressions in leaf surface (less exposure to wind and sun).
• Reduction in size of transpiration surface (lower leaf only).
• Increased water storage.

Explanation:

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