All questions of Living Creatures: Exploring their Characteristics for Class 6 Exam

The larva stage in the life cycle of a mosquito is aquatic and feeds on organic matter.

Germination is the process by which a seed develops into a new plant under favorable conditions.

Understanding Excretion in Humans
Excretion is a vital biological process that involves the removal of waste products from the body. It helps maintain homeostasis and ensures that harmful substances do not accumulate. Among the options provided, sweating to remove excess salts is the correct example of excretion.
What is Excretion?
- Excretion refers to the elimination of waste materials produced by metabolic processes in the body.
- It includes the removal of substances that are no longer needed or could be harmful if retained.
Why is Sweating Considered Excretion?
- Sweating: The body produces sweat to cool down, especially during hot weather or physical activity.
- Composition of Sweat: Sweat primarily consists of water, but it also contains salts (mainly sodium chloride), urea, and other waste products.
- Function: By sweating, the body regulates temperature and simultaneously gets rid of excess salts and wastes, which is a key aspect of excretion.
Other Options Explained
- Breathing in Oxygen: This is a process of respiration, not excretion, as it involves taking in oxygen for cellular functions.
- Growing Taller: This is a result of growth and development, not related to the elimination of waste.
- Eating Food: This process involves intake of nutrients and energy, but does not involve the removal of waste.
In summary, option 'B' (Sweating to remove excess salts) is indeed an example of excretion in humans, highlighting the body’s ability to eliminate waste through sweat while also maintaining temperature regulation.

Reproduction is the biological process by which new individuals of the same species are produced.

Respiration is the process by which living beings exchange gases with their environment, taking in oxygen and releasing carbon dioxide.

Understanding Plant Responses to Light
Plants exhibit remarkable adaptations to their environment, particularly in response to light, a process known as phototropism.
What is Phototropism?
- Phototropism is the growth response of plants to light direction.
- When a plant detects light, certain hormones called auxins redistribute to the side of the plant that is away from the light source.
How Do Plants Respond?
- This hormonal change causes the cells on the darker side of the plant to elongate more than those on the light-exposed side.
- As a result, the plant bends toward the light source, maximizing its exposure to sunlight for photosynthesis.
Why is This Important?
- Sunlight is crucial for photosynthesis, the process by which plants convert light energy into chemical energy.
- By growing toward light, plants can produce food and energy more efficiently, supporting their growth and survival.
Other Types of Responses
- While option 'B' is correct, plants can also respond to other stimuli:
- They may fold their leaves in response to touch or changes in temperature (known as thigmotropism).
- Some plants exhibit movements, like the Venus flytrap, which snaps shut when prey touches sensitive hairs.
In summary, plants grow toward light to optimize their energy production, showcasing their ability to respond actively to external stimuli in their environment. This adaptation is essential for their growth, health, and survival.

Nutrition is the process by which living beings obtain and use food for their growth, energy, and maintenance.

The froglet stage is when a frog develops legs and lungs, transitioning from an aquatic to a terrestrial environment.

A sunflower turning its head to face the sun (phototropism) is an example of movement in plants.

Excretion is the process by which living organisms remove waste products from their bodies to maintain internal balance.

The life cycle of a plant starts with seed germination, continues with growth and maturation (flowering and fruit/seed production), and ends with the plant's death, ensuring the cycle repeats.

Reproduction is vital because it allows living beings to produce new individuals and ensure the survival of their species.

Seed germination requires water to activate enzymes, air for oxygen, and appropriate environmental conditions to start growth.

Metamorphosis is a process where animals undergo significant transformations in their body shape and structure as they progress through different life stages.

Growth is one of the key traits of living beings; they increase in size and complexity over time.

Respiration is essential for converting food into energy by using oxygen, which is critical for sustaining life functions.

Nutrition supplies the necessary energy and materials for growth, development, and repair of tissues, which are essential for survival.

A rock is an example of a non-living thing as it does not exhibit characteristics of life such as growth, respiration, or reproduction.

Germination is the process that starts when a seed absorbs water, softening the seed coat and activating enzymes that allow the embryo to grow into a new plant.

Living organisms are characterized by dynamic processes such as growth, reproduction, response to stimuli, respiration, and excretion—traits not found in non-living objects.

Respiration is the process in which organisms take in oxygen and release carbon dioxide to produce energy from food.

Non-living things do not display the essential traits of life like growth, reproduction, respiration, or response to stimuli.

Plants exhibit phototropism: their shoots grow toward the light source, while their roots continue to grow downward into the soil.

Living beings exhibit traits like growth, reproduction, response to stimuli, movement, respiration, excretion, and nutrition, which non-living things do not.