Answer the following questions briefly.
1. What is adaptation?
2. Give two adaptations of underwater plants,
3. Give two examples each of emergent plants and parasitic plants
4. Why do desert plants have thick stems?
5. Non-green plants cannot carry out photosynthesis, Why?
Answers
Answer:
Dear Mate !
Explanation:
1.Ans : Adaptation is the evolutionary process where an organism becomes better suited to its habitat. This process takes place over many generations. It is one of the basic phenomena of biology. When people speak about adaptation, they often mean a 'feature' (a trait) which helps an animal or plant survive.
2.Ans : 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.
3.Ans : -
Emergent Plant Examples:
Cattails.
Elephant Ear.
Parasitic plant Examples:
Mistletoe.
Cuscuta.
4.Ans : The stomata of many cacti lie deep in the plants' tissues. 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. ... Small leaves mean less evaporative surface per leaf.
5.Ans : Non green plants cannot make their own food because they do not have chlorophyll in their leaves which breaks down carbon dioxide and water molecules thus do not produce glucose(food).
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Answer:
1-Adaptation is the evolutionary process whereby an organism becomes better able to live in its habitat or habitats. ... Adaptedness is the state of being adapted: the degree to which an organism is able to live and reproduce in a given set of habitats.
2-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.
3-for parasitic plants-Holoparasites are always obligate so only two terms are needed, e.g. Plants usually considered holoparasites include broomrape, dodder, Rafflesia, and the Hydnoraceae. Plants usually considered hemiparasites include Castilleja, mistletoe, Western Australian Christmas tree, and yellow rattle,
4-The stomata of many cacti lie deep in the plants' tissues. 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. ... Small leaves mean less evaporative surface per leaf.
5-Non green plants cannot make their own food because they do not have chlorophyll in their leaves which breaks down carbon dioxide and water molecules thus do not produce glucose(food).