Science, unit 5, unit 6

 Lesson - 5

Types of Plants

Main Points to Remember

👉 There are different types of plants around us.

👉 The plants are different in their shape, size, habitat and life span.

👉 On the basis of flowers, the plants are of two types; non-flowering plants and flowering plants.

👉 On the basis of life span, plants are of three types. Plants growing in one season are called annual plants, surviving for two seasons or two years are called biennial plants and plants surviving for more than two years are called perennial plants.

👉 Plants that grow on land are called terrestrial plants and that grow in water are called aquatic plants.

👉 Some plants or vegetables grow in some specific season only. These plants are called seasonal plants.

👉 Now a days, off-seasonal plants are also grown in a special construction made by plastics called green house. Plants growing in summer season can be grown in winter by using the green house.

1. Fill in the blanks with suitable words.

Answer 👉 

a. Flowering plants reproduce by seeds.

b. Fern and mushroom are nonflowering plants.

c. Annual plants survive for one season only.

d. Mango is a perennial plant.

e. Radish is grown in winter season.

2. Write ‘True’ for the correct sentences and ‘False’ for the wrong ones.

a. Mustard is a flowering plant.

b. Biennial plants survive for one season only.

c. Perennial plants grow for many years.          

d. Summer plants can be grown in winter also in a green house.

e. Rayo sag is usually found in winter season.

Answer 👉 

a. True

b. False

c. True

d. True

e. False

3. Classify the following plants as annual and perennial plants.

Answer 👉 

Annual Plants: Pumpkin, Wheat, Pea, Mustard, Bean

Perennial Plants: Apple, Grapes, Litchi, Rayo, Orange, Coconut, Mango

4. Write down the name of any three:

Answer 👉 

a. Flowering plants: Rose, Sunflower, Tulip

b. Non-flowering plants: Fern, Moss, Algae

c. Annual plants: Marigold, Zinnia, Petunia

d. Biennial plants: Parsley, Foxglove, Sweet William

e. Perennial plants: Oak tree, Lavender, Peony

f. Terrestrial plants: Maple tree, Dandelion, Oak tree

g. Aquatic plants: Water lily, Seaweed, Lotus

5. Draw a diagram of a mustard plant. Write down about it based on the following:

Answer 👉  Do yourself

Lesson - 6

Advantages of Plants and Animals

Main Points to Remember

👉 Animals and plants are very advantageous to us.

👉 We get foods, fibres and medicines from plants.

👉 Plants are useful to us as they give us timber, wood, tea, coffee, perfumes, rubber and gum also.

👉 We get food, fibres and leathers from animals.

👉 We also use animals for transportation and farming as well. Similarly, excreta of animals are used as manure and fuel.

Exercise

1. Fill in the blanks with suitable words.

Answer 👉 

a. Cereals are the sources of carbohydrates.

b. Pulses are the source of proteins.

c. We use the leaves of leafy plants as vegetables.

d. Fruits are the main sources of vitamins and minerals.

e. Plant fibers are used to make clothes.

2. Write ‘True’ for the correct sentences and ‘False’ for the wrong ones.

a. We use grains of rice, wheat and barley as our food.

b. We get food from leaves of soyabean.

c. Tomato, brinjal and pumpkin are the fruits we eat as vegetables.

d. The skin of animals is used as leather to make various goods.

e. We get tea and coffee from plants.

Answer 👉 

a. True

b. False (We get food from the seeds of soybean, not the leaves.)

c. True

d. True

e. True

3. Match the following:

Answer 👉 

Silkworm - Fibre

Horse - Transportation

Buffalo - Milk

Pig - Meat

Cat - Pet animal

4. Name the parts of the following plants that can be used as food:

Answer 👉 

Maize - Seeds (Corn)

Rajma - Seeds (Kidney beans)

Carrot - Root

Potato - Tubers

Radish - Root

Spinach - Leaves

Lettuce - Leaves

Apple - Fruit

Brinjal - Fruit

Rayo - Leaves

Onion - Bulb

Tomato - Fruit

5. Answer the following questions.

a. Write down any three advantages of plants.

Three advantages of plants:

• Plants produce oxygen.
• Plants provide food.
• Plants help in maintaining a balanced environment.
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b. Write down any three advantages of animals.

• Three advantages of animals:
• Animals help in pollination and seed dispersal.
• Animals provide food and nutrition.
• Animals offer companionship and support.

c. Write down any three examples of plants that are used as medicines.

Three examples of plants used as medicines:

• Aloe vera
• Neem
• Turmeric

d. Name any two plants whose flowers are eaten as vegetables.

Two plants whose flowers are eaten as vegetables:

• Cauliflower
• Broccoli

e. Name any three animals that give us wool.

Three animals that give us wool:

• Sheep
• Alpaca
• Angora rabbit

f. Write down the name of any three articles made by animal’s leather.

Three articles made from animal leather:

• Shoes
• Wallets
• Belts

6. Draw and colour the following:

Do your self