Chapter-9 The Living Organisms and their Surroundings

1. What is a habitat?

Explanation:

Habitat is the term used to describe the living space of a creature. It possesses all of the necessary natural factors for life. Everything involves collecting food, choosing a partner, effectively reproducing, etc. A favorable balance of sun, oxygen, water, and earth is considered to be a suitable environment for plants. For instance, prickly pear cacti, which are typically found in regions like the Sonoran Desert in northwest Mexico, require sandy soil, an arid environment, and intense sunshine for proper development. These plants can't flourish in chilly, damp climates. Shelter, water, food, and room are a few of the essential elements of a successful host. And once everything is set up correctly.


2. How is a cactus adapted to survive in a desert?

Explanation:

Through the development of water storage cells in their stalks, cacti have acclimated to the arid. During dry spells, the plant can store water in these water-holding cells to keep it alive. The cactus can live in a water-scarce climate thanks to the vast amounts of water the cells can store. To lessen evaporation, the spine takes the position of the leaf. In stems, photosynthesis occurs. The leaf is encased in a dense waxy coating to keep water in. Cactus roots are firmly embedded in the ground to collect water.

3. Fill in the blanks:

  1. The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called ————.

  2. The habitats of the plants and animals that live on land are called ———— habitat.

  3. The habitats of plants and animals that live in water are called ————habitats.

  4.  Soil, water and air are the ———— factors of a habitat.

  5.  Changes in our surroundings that make us respond to them are called ————

Explanation:

  1. The presence of specific features, which enable a plant or an animal to live in a particular habitat, is called adaptation.

  2.  The habitats of the plants and animals that live on land are called terrestrial habitats.

  3.  The habitats of plants and animals that live in water are called aquatic habitats.

  4.  Soil, water and air are the abiotic factors of a habitat.

  5.  Changes in our surroundings that make us respond to them are called stimuli.


4. Which of the things in the following list are non-living?

Plough, mushroom, sewing machine, radio, boat, water hyacinth, earthworm

Explanation:

Non-living objects include a watercraft, radio, sewing machine, and plough.


5.  Give an example of a non-living thing which shows any two characteristics of living things.

Explanation:

 Car

Characteristics of the car are:

  1. Moving like an organic thing

  2.  Energy is required for activity.


6. Which of the non-living things listed below were once part of a living thing?

          Butter, Leather, soil, wool, electric bulb, cooking oil, salt, apple, rubber

Explanation:

A living creature once made up butter, leather, mohair, cooking oil, apples, and rubber.

7. List the common characteristics of living things.

Explanation:

The following are typical traits of biological things:

  1.  Breathing

  2.  Eating habits

  3.  React to external cues

  4. Urination Motion

  5. Reproduction

  6. Growing old and dying


8. Explain 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 grassland habitats.)

Explanation:

For creatures that remain in grasslands, speed is essential for life because:

  1. There aren't many trees in the meadow to protect wildlife from lions and tigers.

  2. Predators can readily find their victims in even the smallest patches of grass.

  3. These creatures have to move quickly in order to avoid their attackers and find a safe place.

  4. Predators might find it simpler to detect their victims in the grass.

For example, deer and zebras are built to move swiftly to elude attackers. Because of this, grassland creatures place a premium on quickness.