Adaptation
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Habitat and its Types
SubtopicHabitat and its Types under Adaptation for Grade 6 ICSE.
Preview questions (no answers)
- 1.
Which of these animals is naturally found in a grassland habitat?
A.Zebra
B.Octopus
C.Polar Bear
D.Camel
- 2.
The roots of many floating aquatic plants are usually:
A.Very long and deep
B.Poorly developed
C.Thick and woody
D.Used to store food
- 3.
The natural habitat of a polar bear is primarily located in which region?
A.Tropical region
B.Desert region
C.Arctic region
D.Equatorial region
- 4.
Which of the following is a man-made or artificial habitat?
A.Rainforest
B.Ocean
C.Aquarium
D.Grassland
- 5.
Why are some animals in the Arctic region white in color?
A.To absorb more heat from the surroundings
B.To camouflage with the snow and hide from predators or prey
C.To reflect the harmful UV rays of the sun
D.Because there is no pigment available in cold climates
- 6.
A fish is taken out of water and placed on land. Why is it unable to survive?
A.It cannot move its fins on land
B.Its skin becomes too dry to function
C.It cannot absorb oxygen from the air using its gills
D.The sunlight is too bright for its eyes
- 7.
What is the significance of the 'blowhole' being located on the top of a whale's head?
A.It allows the whale to spray water into the air for fun
B.It allows the whale to breathe while most of its body remains underwater
C.It helps the whale hear sounds from above the water
D.It helps the whale regulate its internal body pressure
- 8.
Why is the soil in a tropical rainforest habitat often nutrient-poor, despite the presence of so many plants?
A.Because the heavy rains wash away the nutrients (leaching).
B.Because the plants do not die and decay in the rainforest.
C.Because the high temperature destroys all the minerals in the soil.
D.Because the soil is mostly made of sand and cannot hold nutrients.
- 9.
In the mountain habitat, how does the 'thick fur' of a Yak help it survive, besides providing warmth?
A.It helps the Yak blend in with the snowy surroundings.
B.It protects the Yak's skin from the intense UV radiation at high altitudes.
C.It acts as a sponge to collect drinking water from the mist.
D.It makes the Yak look larger to scare off wolves.
- 10.
Most aquatic animals have a 'streamlined' body. What is the physics-based reason for this adaptation in their habitat?
A.To allow more room for the development of large gills.
B.To reduce the fluid friction (drag) as they move through the water.
C.To make them look smaller and less threatening to predators.
D.To help them float on the surface of the water without effort.
Download the worksheet for Adaptation - Habitat and its Types to practice offline. It includes additional chapter-level practice questions.
Adaptations in Plants (Xerophytes, Mesophytes, Hydrophytes)
SubtopicAdaptations in Plants (Xerophytes, Mesophytes, Hydrophytes) under Adaptation for Grade 6 ICSE.
Preview questions (no answers)
- 1.
The modification of parts of a plant to survive in its environment is called:
A.Hibernation
B.Adaptation
C.Migration
D.Pollination
- 2.
Which plant type would have the most difficulty surviving in a desert?
A.Xerophyte
B.Succulent
C.Hydrophyte
D.Cactus
- 3.
The stem of a mesophyte is generally:
A.Green and fleshy
B.Soft and weak
C.Aerial, solid and branched
D.Completely absent
- 4.
Which of these is NOT an aquatic plant?
A.Water Hyacinth
B.Pistia
C.Banyan
D.Hydrilla
- 5.
In xerophytes, the presence of 'hairs' on the leaf surface helps to:
A.Traps a layer of moist air to reduce transpiration
B.Absorb sunlight better
C.Collect dust for minerals
D.Repel all sunlight
- 6.
Why do mesophytes have broad leaves?
A.To store water in the blades
B.To maximize light absorption for photosynthesis in moderate conditions
C.To help them float on water
D.To prevent insects from landing
- 7.
Which statement is true about the roots of hydrophytes?
A.They are very long to reach deep water
B.They are mainly used for anchorage rather than absorption
C.They are always thicker than the stem
D.They have a very thick cuticle
- 8.
A xerophytic plant with very short life cycles that grows, flowers, and seeds within a few weeks after rain is known as an:
A.Evergreen
B.Ephemeral
C.Succulent
D.Perennial
- 9.
What is the primary ecological role of 'root hairs' in mesophytes?
A.To provide stability to the plant
B.To increase the surface area for water and mineral absorption
C.To store oxygen for the roots
D.To protect the root tip from abrasion
- 10.
Submerged hydrophytes lack a proper vascular system. How do they transport nutrients internally?
A.Through a specialized system of air tubes
B.Mainly through cell-to-cell diffusion
C.By using a high-pressure pump in the roots
D.They do not need to transport nutrients as every cell is independent
Download the worksheet for Adaptation - Adaptations in Plants (Xerophytes, Mesophytes, Hydrophytes) to practice offline. It includes additional chapter-level practice questions.
Adaptations in Animals (Aquatic, Terrestrial, Aerial)
SubtopicAdaptations in Animals (Aquatic, Terrestrial, Aerial) under Adaptation for Grade 6 ICSE.
Preview questions (no answers)
- 1.
Elephants have large, fan-like ears. Besides hearing, what is another use for these ears?
A.To help them fly
B.To cool their body temperature
C.To store water
D.To protect their eyes from the sun
- 2.
What helps a fish stay buoyant (float) in water without much effort?
A.Gills
B.Swim bladder
C.Tail fin
D.Scales
- 3.
Which of the following describes an 'Aerial' animal?
A.An animal that lives only in water
B.An animal that can fly and spends time in the air
C.An animal that lives under the soil
D.An animal that has no bones
- 4.
Which organ does a snake use to 'smell' or sense chemicals in the air?
A.Its ears
B.Its flickering tongue
C.Its tail
D.Its scales
- 5.
Which adaptation is most important for an animal that spends its entire life in a high-altitude, low-oxygen environment?
A.Developing a larger heart and more red blood cells
B.Having a very small body size to use less energy
C.Sleeping for twenty hours a day
D.Developing a thick layer of scales on the skin
- 6.
Why do many aquatic animals have a darker color on their top (dorsal) side and a lighter color on their belly (ventral) side?
A.To absorb more heat from the sun on the top side
B.To help them camouflage from both above and below (counter-shading)
C.To show other fish where they are going
D.To make their skin tougher against water pressure
- 7.
Rabbits and hares have long hind legs. How does this terrestrial adaptation help them?
A.It helps them to climb trees quickly
B.It allows them to make long leaps to escape predators
C.It helps them to dig deep burrows in hard soil
D.It helps them to stand upright to reach tall fruit
- 8.
Electric eels are not actually eels but a type of knifefish. How do they generate high-voltage electricity for hunting and defense?
A.By rubbing their scales together to create static electricity.
B.Using specialized cells called electrocytes that act like tiny biological batteries arranged in series.
C.By absorbing electricity from lightning strikes on the water's surface.
D.Through a chemical reaction between the salt in the water and their skin.
- 9.
The 'Pufferfish' has a unique defense mechanism. Beyond inflation, what other adaptation makes it a dangerous target for predators?
A.It can swim at speeds of up to 60 mph.
B.It contains a potent neurotoxin called tetrodotoxin in its internal organs.
C.It can create an electrical field that stuns anything within 5 feet.
D.It has teeth that can bite through steel hooks.
- 10.
Some desert animals have 'concentrated urine' and 'dry feces'. What is the cellular/organ-level adaptation responsible for this?
A.The liver works harder to remove water from the body.
B.The kidneys have exceptionally long 'Loops of Henle' to maximize water reabsorption into the blood.
C.The stomach absorbs all the water from the food immediately.
D.The animal doesn't have a bladder, so it cannot store liquid waste.
Download the worksheet for Adaptation - Adaptations in Animals (Aquatic, Terrestrial, Aerial) to practice offline. It includes additional chapter-level practice questions.