Practice Questions: The Living Organisms - Characteristics & Habitats | Practice Questions with Solutions for Class 6 PDF Download

Q1: Name a few habitats.
Ans: Forests, deserts, grasslands, oceans, ponds, and mountains.

Q2: Give one-word answers to the following sentences:

1. Anything that has mass and occupies space.
2. The process of taking food by organisms.
3. The process of getting rid of waste.
4. The process of removal of wastes in plants.
5. The factors like food, water, light, and temperature to which organisms respond.
6. Production of new organisms of their own kind.
7. Increase in size along with mass using energy.

Ans:

1. Matter
2. Nutrition
3. Excretion
4. Secretion
5. Stimuli
6. Reproduction
7. Growth

Q3: What type of movement do we see in plants?
Ans:

• Movements of nutrients, water, and minerals throughout the plant.
• The development of the fruit, flowers, leaves, and stem.
• Opening and closing of flowers.
• Root movement in the direction of water in the soil.
• Stem and leaf motion in the direction of the sun.
  
  

Q4: Name the place of living of the following plants:

• Cactus
  
• Hydrilla

Ans:

• Cactus: Desert
• Hydrilla: Pond.

Q5: Write the differences between respiration and breathing.
Ans:

• Respiration: Respiration is the method through which living creatures use oxygen to liberate the energy contained in the food they consume.
• Breathing: It is the process of inhaling and exhaling the air in and out of the lungs. When we inhale while breathing, oxygen-rich air travels from the exterior of our bodies to the inside. When we exhale, carbon dioxide-rich air leaves our bodies and travels outside.

Q6: Describe the adaptation of plants to living in water.
Ans6: The adaptation of plants that takes place in aquatic habitats is as follows:

• Stems extend above the surface of the water.
• The roots are reduced in size, which holds the plant.
• Flowers and leaves float on the surface of the water.
• Stems are long, hollow, and light.
• The waxy covering that covers the leaves shields them from excess water.

Q7: How have camels adapted to live in the desert?
Ans: A camel is adapted to desert conditions.
The following adaptations are found in camel:

• The animal has a fat-filled hump on its back. When the camel has nothing to eat, it uses this food.
• It has long legs to keep its body out of the sand’s heat.
• The hooves of the camels are covered by a large sole that helps them move on the hot slippery sand.
• Water is equally dispersed throughout the animal’s body, not only in one pocket or organ.
• It excretes extremely little water through dry dung from its body.

Q8: How have cacti adapted to survive in a desert?
Ans: The cacti adapts itself in the desert in following ways:

• It has a modified flat, green stem that conserves water and uses photosynthesis to prepare food.
• The stem has a thick, waxy layer covering it, which aids in water retention.
• To stop water loss through transpiration, there are leaves present that have spines.
• Long roots delve down into the ground to absorb water.

Q9: What do you mean by acclimatisation?
Ans: Acclimatisation is the process through which an organism undergoes changes over a short period of time that enable it to adapt to its environment.

Q10: Classify the following habitats into terrestrial and aquatic types.
[Grassland, Pond, Ocean, Rice field]
Ans:

• Terrestrial habitats: Grassland, Rice field
• Aquatic habitats: Pond, Ocean

Q11: Elaborate on why speed is important for survival in the grasslands for animals that live there (Hint: There are few trees or places for animals to hide in grasslands habitat).
Ans: Grasses predominate in grasslands. There are not many trees. These areas are frequently home to predators like lions, tigers, and others that prey on other species. These predators find their prey in the grass quite quickly. Animals, therefore, adjust by becoming faster to defend themselves from these predators. The faster animal protects itself and improves its chances of life by assisting the smaller, more vulnerable creatures in escaping their predator.

Q12: What do you mean by the term adaptation?
Ans: Any inherited characteristic that enables a plant or animal to thrive and reproduce in its environment is known as an adaptation.

Q13: State an example of a non-living thing that shows two characteristics of living things.
Ans: Cloud is an example of a non-living thing that shows two characteristics of living things.

• Clouds move from one place to another.
• Clouds can grow.

Q14: What is Excretion?
Ans: Excretion is the process by which living things get rid of their waste.

Q15: What is respiration?
Ans: Respiration is the process through which oxygen is used by living things to convert food into energy, water, and carbon dioxide.

Q16: List two examples of each biotic and abiotic component.
Ans: 

• Biotic components: Animals, birds, plants.
• Abiotic components: Water, air, soil, sunlight.

Q17: Even though a car moves, like many animals, it is not considered a living organism. Give 2-3 reasons.
Ans: A car is not considered a living organism because of the following reasons:

• The building blocks of all living things are cells. The smallest unit of a living thing is a cell. Cells do not make up a car.
• Living things can sense and react to their surroundings, including light, temperature, water, pollution, and other environmental stimuli. The car doesn’t react to inputs.
• Growth is a rise in an organism’s size. Growth is a permanent and irreversible process in living things. The growth of the car is not permanent and irreversible.

Q18: What are predators?
Ans: An organism that consumes another organism is a predator. The organism that the predator consumes is known as the prey. Lion and zebra, bear and fish, and fox and rabbit are some examples of predator and prey.

Q19: List the common characteristics of living things.
Ans: Few common characteristics of living things are:

• They can grow and develop.
• They can reproduce.
• They obtain and use energy.
• They adapt to their environment.
• They move from one place to another.
• They respire and excrete waste material.
• They respond to their environment or stimuli.

Q20: What is a habitat?
Ans: A habitat is a place where an organism makes its home. Habitat provides an organism with all the environmental factors it needs to survive.