4-Science, Chapter 1, Lesson 1

4-SCIENCE: ADAPTATIONS IN PLANTS

Unit 1:Plants as Living Beings Chapter 1, Lesson 1

Activity 1: Adaptations in Plants

• Bring the following materials tomorrow:A4 paper(4 pcs),clear tape or any tape, cardboard or any hard paper, glue paste, 1 cup sand, 2 trays/any flat containers.

Question and Answer:

A. Which shape do you find remains standing—the cone or the cylinder? ________________________•

B. Which shape of the tree is able to withstand firmly on the

mountains when it snows heavily? _______________________

C. Why hilly plants like pine tree have a conical shape? ________

Learning Objectives

• 1)Classify plants

  according to their

  habitat

• 2) Name the kinds of

  terrestrial habitats

• 3) Identify the plants

  inhabiting the terrestrial

  habitats

Engage: Adaptation Song(https://www.youtube.com/watch?v=Boo1nSo73Gs)

• Everybody Stand

• Sing with the music video

• What is Adaptation?

Adaptation

• changes in the body to fit a location.

• is a change in the body or behaviour of an organism that helps

  it to survive.

• All living things, animals and plants, adapt to their surroundings to

  survive.

SUB TOPIC: HABITAT

• The natural home of a plant or an animal is

Multiple Choice

1. The natural home of a plant or an animal is called its _______

• environment

• location

• habitat

• territory

Multiple Choice

2. Plants that grow on land are called _______

• Arboreal plants

• Aquatic plants

• Terrestrial plants

• Aerial plants

Multiple Choice

3. Plants that grow in water are called _________

• Arboreal plants

• Aquatic plants

• Terrestrial plants

• Aerial plants

CLASSIFICATIONS OF PLANTS

• Terrestrial Plants

• Aquatic Plants

Terrestrial Plants

examples: trees, cactus, rose, grass, ferns, etc

Aquatic Plants

Examples: Water lily, Hydrilla, Lotus, etc

TERRESTRIAL PLANTS

• are found in different types of terrestrial habitats such as deserts, marshes, plains,

• forest, grasslands and coastal regions

Deserts

• Xerophytes- are desert plants, have adaptive themselves to obtain water from the ground,

• and also minimize water loss from their body parts.

Cactus( a desert plant) shows adaptive features;

• It has succulent ste which can store large amounts of water

• The leaves modified into thin & sharp spines which prevent form water loss

• 
  

Cactus(continues)

• Transpiration- is the process by which water is lost through the stomata of leaves due to heat.

• The roots of the cactus plant grow very deep into the ground and spread out wide to absorb as much water as possible from the ground.

• Other examples of Desert plants are Palm and Acacia

Munnar Hills in Kerala India(Terrestrial Habitat)

• The temperature of hills varies from cold to extremely cold

• During winters, there is snowfall in some areas or windy too.

• Trees that grow on the hill adapted themselves to survive.

Pines,spruce fir&cedar are ex found in hilly areas. It's changes;

• Pines have conical shape.

• The pine leaf is needle-shaped

• Leaves hang down and roots grow deep. Coniferous trees don't shed leaves called evergreen trees as they remain green throughout.

Multiple Choice

7. Which of the following is not an example of a plant that grows on hills

• Coconut

• cedar

• pines

• spruce