Tag: desert ecosystem

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Questions Related to desert ecosystem

Multiple choice biology adaptation terrestrial adaptations in plants adaptation in terrestrial plants terrestrial adaptation desert ecosystem terrestrial adaptation in animals

Small changes that take place in the body of a single organism over short periods, to overcome small problems due to changes in the surroundings, are called

  1. Acclimatisation

  2. Adaptation

  3. Germination

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Small changes that take place in the body of a single organism over short periods, to overcome small problems due to changes in the surroundings, are called Acclimatisation.

Multiple choice biology adaptation terrestrial adaptations in plants adaptation in terrestrial plants terrestrial adaptation desert ecosystem terrestrial adaptation in animals

The broad-leaved trees found on mountains shed their leaves before the onset of _______.

  1. Winter

  2. Summer

  3. Autumn

  4. Spring
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The broad-leaved trees found on mountains shed their leaves before the onset of winter. This prevents such trees from losing water from their leaves.

Multiple choice biology adaptation terrestrial adaptations in plants adaptation in terrestrial plants terrestrial adaptation desert ecosystem terrestrial adaptation in animals

The north-facing side of a hill in a mountainous region in the US tends to:

  1. Receive less sunlight during a year than the south-facing side

  2. Grow a variety of trees that are typically observed at higher elevation

  3. Be a better location for a ski run than the south-facing side

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the Northern Hemisphere, north-facing slopes receive less direct sunlight, are cooler, often support different vegetation (higher elevation types), and are better for retaining snow for skiing compared to south-facing slopes.

Multiple choice biology habitat and adaptation terrestrial adaptations in plants desert ecosystem adaptation in terrestrial plants

Which of the following is an important adaptation of animals too the cold climate?

  1. Thin layer of body fat

  2. Aestivation

  3. Increased tendency to shivering

  4. Reduced surface area to volume ratio
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Temperature affects the the absolute size of an animal and the relative proportions of various body parts, Birds and mammals attain grater body size in cold regions than in warm areas. But poikilotherms are smaller in cold region. This is Bargeman's rue. This is true because small animals have larger surface area relative to their volume, so if they are in cold, they lose their body heat very fast. In cold climate, reduced surface area to volume ratio is ideal. So, the correct answer is 'Reduced surface area to volume ratio'.

Multiple choice biology habitat and adaptation terrestrial adaptations in plants desert ecosystem adaptation in terrestrial plants

Which of the following is not an important adaptation of animals to cold climate?

  1. Thin layer of body fat

  2. Aestivation

  3. Increased tendency to shiver

  4. Reduced surface area to volume ratio
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The animals living in cold climate have various physiological adaptations like:

1) A thick layer of body fat called as Blubber to avoid loss of heat from body tissue.

2) Hibernation is a property of suspended metabolism in these organisms to surpass cold conditions.similar mechanism called aestivation exists in desert animals to survive in arid and hot conditions.

3) Increased tendency to shiver causes an increase in body temperature because of exercise thus help to withstand low temperatures.

4) The reduced surface area to volume ratio to prevent heat loss from the body surface. So, the correct answer is 'Aestivation'.