Question 1

Question 2Describe the aerial adaptations in birds.

Accepted Answer

Various aerial adaptations found in birds are:Body shape — The body of birds is streamlined. Necks stretched forward with the head pointed in front and a narrowed tail at the end provide them a sleek shape. The body surface is smooth to minimize resistance against air.Wings — The forelimbs are modified into wings. The whole length of the forelimbs carries long light feathers.Steering and brakes — The feathers on the tail help to slow down the speed and also help in steering (changing direction).Wing muscles — These are the strong, active and enlarged breast muscles which support and help in the movement of wings.Cutting down the body weight — Except for the most necessary bulky heavy wing muscles, the rest of the bird's body tends to be light to facilitate flight.Bones have air cavities.Much less water is required in the body. The birds excrete solid urine (formed of uric acid instead of urea which otherwise requires much water to be excreted out).

Question 2

Question 6Diversity of organisms is found in different habitats because of different adaptations forAverage temperatureSoil typeAnnual precipitationAll of these

Accepted Answer

All of theseReason — Organisms adapt to different abiotic factors such as average temperature, soil and annual precipitation in different ways. That is why a diversity of organisms is present in different habitats.

Question 3

Question 7Which of the following is an aquatic plant ?RiceMangoVallisneriaCactus

Accepted Answer

VallisneriaReason — Vallisneria is an aquatic plant commonly used in setting up an aquarium. It remains submerged in the water.

Source: This question is from Habitat and Adaptation, Biology &mdash; Class 6, ICSE Board.
Key Concepts CoveredThis question tests your understanding of the following concepts from the chapter Habitat and Adaptation: Question, Aquatic, Plant, Rice, Mango, Vallisneria. These are fundamental topics in Biology that students are expected to master as part of the ICSE Class 6 curriculum.A thorough understanding of these concepts will help you answer similar questions confidently in your ICSE examinations. These topics are frequently tested in both objective and subjective sections of Biology papers. We recommend revising the relevant section of your textbook alongside practising these solved examples to build a strong foundation.
How to Approach MCQsMultiple choice questions test your ability to quickly recall facts and apply concepts. Read all options carefully before selecting your answer. Use the process of elimination to rule out clearly incorrect options first. If two options seem similar, look for the subtle difference that makes one more accurate. For numerical MCQs, verify your answer by substituting it back into the problem.
Key Points to RememberUse precise scientific terminology as defined in the textbook.
Draw and label diagrams neatly for full marks.
Understand the difference between structure and function.
Learn processes step-by-step in the correct sequence.
Related Questions from Habitat and AdaptationQ1: Question 1 Write true or false against the following statements. Rewrite and correct the false...
Q10: Question 10 State the "water saving methods" in a camel.
Q11: Question 11 Name the following . Three major categories of habitats Four types of terrestrial...
Q12: Question 12 Define the terms given below : Habitat Adaptation Abiotic factors Biotic factors Seed...
Q13: Question 13 Write one important function of the following : Fins Gills Swim bladder of a fish Hump...
Practice more questions from Habitat and Adaptation &mdash; Biology, Class 6 ICSE

Question 4

Question 8Which of the following categories of animals have a streamlined body shape ?Birds and ReptilesFish and AmphibiansFish and BirdsBirds and Mammals

Accepted Answer

Fish and BirdsReason — A streamlined body shape is designed to minimize resistance when moving through a fluid like water or air, and both fish and birds have evolved to have this shape for efficient movement.

Question 5

Question 3Briefly explain the term "Habitat".

Accepted Answer

The natural home of an organism and its immediate surroundings is called its Habitat. The habitat of any living creature should be a place where it can find shelter, food, water and suitable conditions for breeding. The special feature of habitat is that it includes all the physical characteristics around it (air, water, temperature, etc.) along with the surrounding plants and animals. There are three types of habitatAquatic habitatTerrestrial habitatAerial habitat

Question 6

Question 4Give two adaptations in animals found in the mountain habitat.

Accepted Answer

The two adaptations in animal found in the mountain habitat are:The oxygen content in the mountain air is thin. So the blood of the most of these animals contains more red blood cells. This help them to breath in sufficient oxygen even when air pressure is low.Some animals hibernate or go for a long winter sleep when the temperatures are very low. In this way, they conserve their energy and survive the winter without food. Frogs and hedgehogs are some animals which hibernate.

Question 7

Question 5How is a whale similar to a fish in adaptation to life in water? Explain any two features.

Accepted Answer

Two features of whales similar to a fish in adaptation to life in water are:Like fish, the huge body of whale is also streamlined in a spindle shape.Its front legs are modified into paddles or flippers for kicking water and hind limbs are absent.

Question 8

Question 9Complete the table given below. Write down two points in each given column.HabitatEnvironmental factorsPlant AdaptationsAnimal adaptationsAquatic habitat   Mountain habitat   Desert habitat

Accepted Answer

HabitatEnvironmental factorsPlant adaptationsAnimal adaptationsAquatic habitat1. Survival in water.2. Diffusion of gases for respiration and photosynthesis.1. In Vallisneria, the leaves are thin, elongated, ribbon-like to expose more surface to the light entering into water.2. In Water Lily, Stomata are present only on the upper surface of the leaves that is exposed to air for diffusion of gases.1. Aquatic animals have streamlined body that offers least resistance during its forward movement in water.2. Fishes have gills that serve as their breathing organs in water.Mountain habitat1. Rocky land, snow and ice laden regions2. Cold climate, low temperature.1. Trees like Pine, Fir and Cedar are cone shaped with sloping branches to easily slide off rain water and snow.2. The trees have needle like leaves (e.g. Pine tree) to help in water conservation by reducing transpiration as the ground surface is rocky.1. These animals have thick skin covered with fur to protect against cold (e.g. Mountain Goat, Yak).2. They have strong hooves for running up on rocky slopes of the mountains.Desert habitat1. High daytime temperatures and low night time temperatures.2. Scarcity of water.1.Desert plants like Cactus are succulent plants, i.e., they store water in their fleshy tissues and depend on this stored water for photosynthesis.2. Their leaves are reduced in the form of spines to minimize water loss through transpiration.1. The camel can raise its body temperature 4°-5°C higher than outside temperature to reduce water loss through perspiration.2. The eyes of the camel are provided with long eyelashes to protect them from the harsh rays of the sun and the sand in the deserts.

Question 9

Question 10State the "water saving methods" in a camel.

Accepted Answer

The water saving methods in a camel are:Little and thick urine — When deprived of water, the camel passes out very little urine and it is quite thick.Semi-dry faeces — The dung passed out is quite dry.Perspires very little — The camel can tolerate high outside temperature up to 40°C to 45°C as its own body temperature can go up to 41°-42°C and therefore the need to perspire is reduced.Slow breathing — Certain amount of moisture is always lost due to evaporation in the respiratory passages during breathing. Slower the rate of breathing, lesser the loss of water as water vapour in the air breathed out.Water "storage" in muscles — The camel's muscles can withstand the shortage of water and can shrink considerably. Once the water is available, the camel can drink sufficient water and the muscles swell up.Water from the "fat" of the hump — While starving, the fat is oxidized to yield energy as well as water.

Question 10

Question 11Name the following .Three major categories of habitatsFour types of terrestrial habitatsTwo components of the environmentTwo categories of dispersing agentsThree plants found in the mountainous regions

Accepted Answer

Aquatic habitat, Terrestrial habitat, and Aerial habitatDesert habitat, Mountain habitat, Polar habitat, Forests and grasslandsBiotic components and Abiotic componentsNatural agents and AnimalsPine, Fir, Cedar

Question 11

Question 12Define the terms given below :HabitatAdaptationAbiotic factorsBiotic factorsSeed dispersal

Accepted Answer

Habitat — The natural home of an organism and its immediate surroundings is called its habitat.Adaptation — Adaptation is the development of any structure or function in an organism which makes it more efficient for survival in a particular environment or habitat, i.e. adaptations are the changes in the body or behavior of an organism that enables it to survive comfortably and successfully in a habitat.Abiotic factors — Abiotic factors are the non-living, physical, and chemical components of an ecosystem. They incluse various non-living things, such as soil, rocks, air, water, temperature, etc.Biotic factors — Biotic factors are the living components of an ecosystem. They include all organisms, like plants, animals, fungi, bacteria, and other microorganisms.Seed dispersal — Seed dispersal is the process by which plant seeds are transported away from the parent plant to a new location, allowing them to germinate and grow into new plants.

Question 12

Question 13Write one important function of the following :FinsGillsSwim bladder of a fishHump of a camelStreamlined body of a bird

Accepted Answer

A fish swims with the help of fins.The gills are the breathing organs of fishes that help them breathe.Swim bladder of a fish helps in maintaining buoyancy and the fish can rise upward or sink downward by increasing or decreasing the amount of gas in the bladder.The hump of the camel is full of fat which serves as the reserved food. The camel can remain without food for several days and during that period, the fat in the hump serves as a source of energy.Streamlined body of a bird helps to encounter least resistance while flying in the air.

Question 13

Question 14Choose the odd one and give reason in support of your answer :Neem, Pine, Fir, CedarReindeer, Deer, Polar bears, PenguinsScales, Fins, Fur, GillsSeeds of — Cotton, Poppy, Drumstick, MangoWater lily, Lotus, Cactus, Vallisneria

Accepted Answer

Odd one — NeemReason — Neem is a plain region tree, while Pine, Fir, and Cedar are found in mountainous regions.Odd one — DeerReason — Deer is found in forests or plains, while Reindeer, Polar bears, and Penguins are adapted to polar regions.Odd one — FurReason — Fur is a feature of land mammals, whereas Scales, Fins, and Gills are adaptations of aquatic animals.Odd one — MangoReason — Mango seeds are dispersed by animals, while Cotton, Poppy, and Drumstick seeds are dispersed by wind.Odd one — CactusReason — Cactus is a desert plant, while the others are Aquatic plants.

Question 14

Question 1Write true or false against the following statements. Rewrite and correct the false statements :Dorsal and ventral fins of a fish are paired fins.Fishes breathe by means of nostrils.A camel urinates very less and its urine is comparatively thicker.The leaves of water lily are reduced in the form of spines to reduce transpiration.The claws of a bird help in steering (changing direction).

Accepted Answer

FalseCorrect Statement — Dorsal and ventral fins of a fish are unpaired fins.FalseCorrect Statement — Fishes breathe by means of gills.TrueFalseCorrect Statement — The leaves of cacti are reduced in the form of spines to reduce transpiration.FalseCorrect Statement — The tail feathers of a bird helps in steering (changing direction).

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