Question

Answer the following questions in brief.
1. Why is the camel called 'The Ship of the
Desert'?
2. Why are leaves of the cactus plant
reduced to spines?
3. What enables yaks to survive in
extremely low temperatures?
4. Name the components of a habitat. How
are they different from each other?
5. List two problems faced by organisms
living in a desert region.
Answer the following questions in detail.
1. Describe the adaptive features of
hydrophytes.
2. How are animals adapted to live
successfully in aquatic habitats?
3. What are the special features of grasses
found in grasslands? Name two
commonly found grasses in the region.
4. What is adaptation? How is it beneficial
for the living organisms? Give two
examples to explain.
5. What is camouflage? Explain with the
help of examples.
6. What is the type of habitat in which a
conifer is likely to be found. Enlist its
adaptive features.​

Answer 1

Explanation:

Answer the following questions in brief.

1. Camels are called ships of the desert because they carry very big loads from one side of the desert to the other. Dromedary camels can carry over two hundred kilograms on their backs. Camels walk four kilometers per hour through the hot desert. They can go like this for three weeks without water!
3. Most species of cacti have lost true leaves, retaining only spines, which are highly modified leaves. As well as defending against herbivores, spines help prevent water loss by reducing air flow close to the cactus and providing some shade. In the absence of leaves, enlarged stems carry out photosynthesis.
4. No case of frostbite has been recorded in the yak, even at the extremities of its body. The function of the coat in helping yak to survive in very cold and wet conditions is enhanced by the low water absorption of the coat (Xue Jiying and Yu Zhengfeng, 1981).
5. Biotic: The biotic components of the habitat include the living species such as plants and animals. ... These are the non-living components of the habitat. Examples are light, temperature, water, soil etc.
6. List two problems faced by organisms living in a desert region

• lack of water resources.
• lack of medical treatment.
• lack of plantation due to high degree of heat.
• Humidity makes people to face diseases.
• less agriculture land which lead to less production of food.
• lack of farming practises.
• lack of fauna.

Answer the following questions in detail.

1. Hydrophytes are plants that have adapted to life in very wet places. So much so that they only live on or in water itself. You can remember hydrophytes for the 'hydro-' part of their name, meaning 'water.' Hydrophytes like the water lily have little to no root system, unlike land plants, because roots simply aren't as necessary since water is so readily available.
2. Answer. Aquatic animals have streamlined bodies that help them in swimming. - Organisms such as fish have gills to breathe and fins that help to swim. - Whales and dolphins have blow holes to take in oxygen at the surface of water

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Answer 2

Answer:

1)Camels are called ships of the desert because they carry very big loads from one side of the desert to the other. ... Camels walk four kilometers per hour through the hot desert. They can go like this for three weeks without water!

2)Most species of cacti have lost true leaves, retaining only spines, which are highly modified leaves. As well as defending against herbivores, spines help prevent water loss by reducing air flow close to the cactus and providing some shade. In the absence of leaves, enlarged stems carry out photosynthesis.

3)No case of frostbite has been recorded in the yak, even at the extremities of its body. The function of the coat in helping yak to survive in very cold and wet conditions is enhanced by the low water absorption of the coat.

4)Biotic: The biotic components of the habitat include the living species such as plants and animals. ... These are the non-living components of the habitat.

5)lack of water resources.

lack of medical treatment.

lack of plantation due to high degree of heat.

Humidity makes people to face diseases.

less agriculture land which lead to less production of food.

lack of farming practises.

lack of fauna.

1)Hydrophytes are plants like water lilies that have adapted to living in watery conditions. They have little to no root systems and have leaves that often help in flotation. ... They have deep root structures, thin or small leaves, and waxy surfaces to retain moisture.

2)Aquatic animals have streamlined bodies that help them in swimming. - Organisms such as fish have gills to breathe and fins that help to swim. - Whales and dolphins have blow holes to take in oxygen at the surface of water.

3)The plants or grasses in grasslands adapted themselves in such a way that it can survive in any prevalent condition. The grasses have pollen that is spread by the wind and are as such not much dependent on other organisms for pollination. E.g., includes Dogbane and Milkweeds.

4)The presence of some specific features and certain habits which allow an organism to live in its habitat is called adaptation. Organisms show adaptation according to their habitat. They reduce wind speeds and cool the air as they lose moisture and reflect heat upwards from their leaves.

5)Many animals have evolved to exhibit some form of camouflage, which is an adaptation that allows animals to blend in with certain aspects of their environment. Camouflage increases an organism's chance of survival by hiding it from predators. ... Camouflage is also used by some predators as a tool for hunting.

6)

They are adaptive to such places as they are evergreen, cone bearing with have needle like leaves. This gives conifers less surface area and hence less water loss would be there. Also they constantly grow and shed needles to have food and become dormant when its very cold temperature.