What is Adaptation?

Adaptation refers to a change in an organism’s structure and function as a result of a natural process that makes the organism more suited to endure and proliferate in a given environment. Adaptation occurs in plants and animals, allowing them to adjust well within a given environment. E.g. Dessert plants like cacti have spikes, which allows them to conserve water. Animals like tigers have stripes on their body which help them to blend well with their environment like grasslands in order to catch prey.

What is Adaptation?

The natural process through which organisms adapt to completely new surroundings or fluctuations in their current environments is known as adaptation. Georges Louis Leclerc Comte de Buffon was one of the scientists who investigated adaptation before the creation of evolutionary theory. He was a French mathematician who held the view that creatures evolved over time by adjusting to their circumstances.

Types of Adaptations

There are different types of adaptations such as:

Structural Adaptations

Structural adaptations are modifications made to an organism’s structure to help it better adapt to its surroundings. These structural alterations have an impact on an animal on numerous levels. E.g Plants known as succulents have adapted by storing water inside themselves, since they are found in areas with very less water.

Behavioural Adaptation

The modification of an organism’s behaviour to help it survive better in a given environment is known as behavioural adaptation. It can be difficult to spot behavioural adaptations, and it frequently takes thorough field and laboratory research to bring them to light. E.g In winter, birds tend to migrate towards the south, in order to obtain more food and breed.

Physiological Adaptations

A physiological adaptation is a bodily function that enhances an organism’s capacity to reproduce and survive in a given environment. These adaptations can be the various ways in which an organism reacts to environmental stimuli. Since the majority of these changes are based on body chemistry and metabolism, they are normally invisible from the outside. E.g To prevent heat loss, an animal living in a cold climate will have characteristics like thick coats and short ears. Shivering to produce more heat as it gets chilly is the physiological adaptation in this case.

Co-adaptation

Co-adaptation is the process by which two or more species that are symbiotically dependent on one another for survival adjust to new conditions. E.g Long beaks assist hummingbirds collect nectar from particular plants, where they are then pollinated as a result. The pollen grains are dispersed in this manner, and the hummingbirds are fed in return.

Examples of Adaptation

Adaptation are found in both plants and animals. Most plant and animals are interdependent on each other for their survival and help maintain the ecological balance. Trees in colder regions have spine like leaves which help them survive better in harsh conditions. Octopus camoulflage themselves to the background environment to protect themselves from predators. Let us try to understand the different types of adaptations found in both plants and animals.

Adaptations in Animals

Adaptations in animals are usually dependent on their habitats. Their bodies develop certain features which allows them to survive in a particular environment.Animals are able to overcome difficulties, take advantage of opportunities, and eventually thrive in a variety of habitats around the world thanks to these biological, behavioural, and structural changes. Let us understand more on adaptations in animals in different habitats:

Adaptation Seen In Polar Region

Polar regions are areas which show an extreme cold climate. North and South Pole fall in these regions. Few of the characteristics of animals found in these places are:

• Penguins may tuck their flippers close to their bodies in order to preserve heat.This This technique keeps their flippers and feet frigid while maintaining their core body temperature, allowing them to retain body heat by limiting heat loss through their extremities.
• Polar bears are dependent on a thick covering of insulating fur that provides warmth because they dwell in one of the world’s coldest climates.
• The white colour of the polar bear acts as a camouflage against the snowy environment.
• During the lengthy, brutal winters, certain creatures fall into hibernation or torpor, such as the Arctic ground squirrel and the Polar bear.

Adaptions Seen In Desert Regions

Desert conditions show extremely high temperatures and water scarcity. The following features are seen in organisms living in the desert regions:

• A lot of animals in the desert are nocturnal, since the day temperatures go very high.
• Animals like camel have evolved the ability to store water in their humps.
• Animals in deserts excrete in very minute amounts in the form of uric acid.
• Animals that can dig burrows deep in the sand or soil include kangaroo rats and desert tortoises.

Adaptations Seen In Grassland

Grasslands are areas where grass is the main vegetation found along with shrubs and small trees. Some of the features of animals found there are:

• Animals in these areas have grass as their primary source of food. Hence they have a evolved digestive system that can digest grass.
• Predators like tigers have stripes which allows them to easily blend with the environment.

Adaptations Seen In Tropical Rainforest

Due to their proximity to the equator, tropical rainforests are typically hot and humid. They show a high percentage of rainfall with annual precipitation around 60-160 inches. Some of the features of animals found there are:

• Due to rich diversity in both plant and animal life, a lot of animals escape the predator by camouflaging. E.g Chameleon has the ability to change its colours according to the surroundings.
• Mimicry, is another feature seen in animals to escape the predator. E.g Some butterflies mimic the poisonous butterflies to protect themselves from prey.

Adaptations Seen In Aquatic Habitat

Animals that live in water have special features in their body which allow them to absorb oxygen from water.Following features are seen in animals living in aquatic habitat:

• Mammals such as whale and dolphins have nostrils on top of their head called blowholes, through which they breathe air.
• Dolphins are able to pinpoint the location of neighbouring animals using echolocation.
• Fish have gills which they use for breathing under water.
• Their body is streamlined and they have fins which allow them to freely move under water.

Adaptations in Plants

Plant adaptation is evidence of the clever strategies plants have evolved to meet obstacles and take advantage of opportunities in their environments. Over millions of years, plants have mastered the art of adaptation, whether it is through the creation of drought-resistant leaves, symbiotic connections with pollinators, or the capacity to flourish in nutrient-poor soils.

Adaptations Seen In Polar regions

The following features are seen in plants found in polar region:

• The thick bark of coniferous trees serves as a barrier against the cold.
• They have flexible branches and a cone-shaped form that enables them to withstand heavy snowfall.
• Low-growing and compact plant species include cushion plants. They are able to avoid the strong mountain winds and water loss that comes with high winds thanks to their low and compact form.
• The plant can also trap heat in the winter and cool air in the summer thanks to its adaptability.

Adaptation seen in Desert Environment

Plants in Desert environment show the following features:

• The have a very deep root system, since they have to draw water from deep underground.
• Plants lose water from the leaves through transpiration. Hence their leaves are modified into spines.
• A lot of plants are succulents which have the ability to store water in their leaves.
• Succulents are plants that have modified stems and leaves that can hold water.

Adaptation Seen In Aquatic Habitat

Plants which are found in water have to face harsh situations like limited oxygen content and low intensity of light. The following features are seen in plants found in aquatic habitat:

• These plants have roots submerged under water and their upper half remains above the water for photosynthesis.
• Modified stems and roots are present for food absorption.
• Lotus has waxy covering through the plant body, which does not allow water to stay.
• They have sliced leaves which avoid the water flow.

Causes of Adaptation

Natural selection or mutation could lead to adaptation. The rapid genetic alteration known as a mutation may be accidental or random. Any alteration to the DNA‘s nucleotide sequence and the replacement of a single pair of nucleotides will result in mutation. While some mutations may be favourable to an organism’s survival in the struggle for life, others may be destructive to humans.

Importance of Adaptation

Adaptations like coloration and camouflage shield them from predators. Animals in hazardous environments are more likely to survive for longer thanks to DNA mutations, and these attributes of survival are passed on to subsequent generations. Numerous animals can survive and thrive on the Earth thanks to these adaptations.

E.g. Charles Darwin researched two islands’ turtles. On one island, there were turtles with small legs, straight shells, and food that was close to the ground. A few turtles relocated to another island because there was more food there. Longer-legged turtles were able to survive. Over time, their shells rounded and their necks became longer. As a result of these changes in their species, the population of the new island increased.

FAQs On Adaptation

1. List two points highlighting the Importance of Adaptation in Biology.

Answer:

Adaptation is the process which allows different organisms to survive and habitat. It is essential for the survival of species. It also results in an increase in the diversity of organisms.

2. Define Adaptation.

Answer:

Adaptation is an evolutionary process which allows organisms to undergo changes which might be physiological, structural or behavioural to better suit to the environment.

3. What are the Type of Adaptations seen in Desert animals?

Answer:

Camels have broad, flat feet that help them balance their weight on the sand. They have thick hair on top to give shade but sparse fur all around the body for quick heat escape.

4. What is the Importance of Adaptation?

Answer:

For living things to survive, adaptation is crucial. Animals that can’t shift with their surroundings pass away. Genetic alterations have led to these adaptations. The altered genes are passed on to the next generation of animals by the survivors.

5. Where do Adaptations come from?

Answer:

Evolution is the cause of adaptation. A species changes over a lengthy period of time through evolution. Usually, mutations or accidental changes in a gene induce adaptations to happen. A plant or animal with a particular mutation may be able to survive longer than members of the same species without the mutation.