Class 5 Notes of Science subject, Category – Science and Environment Education, Unit:3 – “Life Cycle of a Butterfly”.
Life Cycle of a Butterfly Unit-3 Science Notes of Class 5. Under category ‘Science and Environment Education’ of Class 5 Science subject Unit:3 – “Life Cycle of a Butterfly”, Students and teachers can find the notes and solutions of fill in the blanks, true and false statements, definitions, match the followings, question answers, diagram of lifecycle of a butterfly, jumbled words, glossary and extra important questions.
1. Fill in the blanks using the words given in the box.
a. Life cycle is the stage of development of organism from its beginning to its s**ual maturity.
b. Egg is the first stage of life cycle of a butterfly.
c. A pupa is covered inside a puparium.
d. A butterfly has two pairs of wings and three pairs of legs.
e. The larva stage of the butterfly is called caterpillar.
f. Adult female butterfly lays eggs.
g. The butterfly sucks the nectar of the flower.
2. Write ‘T’ for true and ‘F’ for false statements.
a. A butterfly sucks the blood from the body of an animal. F
b. The life cycle of the most insects completes in three stages. F
c. A larva of a butterfly feeds on leaves and damaged plants. T
d. The pupa is an active stage in the lifecycle of a butterfly. F
e. The female butterfly lays eggs without getting fertilized. F
f. The cocoon protects a butterfly from an outer environment. T
g. A caterpillar has legs but not wings. T
3. Select the correct alternatives.
a. A butterfly feeds on nectar of flowers. (Butterfly Housefly)
b. The larva of a butterfly is also called caterpillar. (cocoon/caterpillar)
c. The pupa is inactive stage in life cycle of a butterfly. (active/inactive)
d. The caterpillar is the second stage in the life cycle of a butterfly. (second/third)
e. It takes one week to complete the life cycle of a butterfly. (one week/ two weeks)
f. A female butterfly lays eggs at the front part of the leaves. (front/back)
4. Define the following.
a. Life cycle – Life cycle is the stage of development of an organism from it’s beginning to s**ual maturity. Most of the insects have four stages in their life cycle. They are egg, larva, pupa and adult.
#What do you mean by life cycle?
b. Caterpillar – The larva of a butterfly is called a caterpillar. It has a segmented body, hairs and looks like a worm. Caterpillar has legs but does not have wings. Its very active and eats a lot.
#What is a caterpillar?
c. Cocoon – A cocoon or puparium is a jelly substance that covers a pupa. Inside cocoon, the pupa cannot move and remain inactive. The cocoon protects the pupa from an outer environment.
#What is a cocoon?
d. Pupa – The caterpillar inside the cocoon or puparium is called the pupa. The pupa cannot move and remain inactive inside cocoon until it breaks. Pupa is protected by cocoon from an outer environment.
#What is pupa?
5. Answer the following questions.
a. How is a butterfly a useful insect?
Answer: Butterfly is a useful insect because it helps to complete the life cycle of plants by transferring pollen grains.
b. How do butterfly eggs stick in leaves?
Answer: A glue like substance stick the eggs of a butterfly in the leaves.
c. Which stage of an insect grows actively and eats a lot?
Answer: Larva stage of an insect grows actively and eats a lot.
d. Explain the life cycle of a butterfly.
Answer: The life cycle of butterfly complete in four stages. i.e. egg, larva, pupa and adult/butterfly.
i. Egg: It is the first stage of life cycle of a butterfly. A mature female butterfly lay eggs in leaves.
ii. Larva: It is the second stage of life cycle of a butterfly. The larva of a butterfly is called caterpillar. Larva grows actively and eats a lot.
iii. Pupa: It is the third stage of life cycle of a butterfly. The caterpillar stops feeding and produces jelly substance from its mouth. The jelly substance wraps and covers it. The cover is called cocoon. A caterpillar inside a cocoon is called pupa.
iv. Adult: After few days, cocoon breaks and small butterfly comes out it is the last sage of life cycle of a butterfly. After they become mature and getting fertilized by male butterfly, they started laying eggs.
e. How long does it take to complete the life cycle of a butterfly?
Answer: It takes about seven days/one week to complete the life cycle of butterfly.
6. Draw diagram of life cycle of a butterfly.
7. Make meaningful words from the given jumbled words.
|a. VARAL||b. UPPA||c. NOOCCO||d. TUTEBYLFR|
|a. LARVA||b. PUPA||c. COCOON||d. BUTTERFLY|
S**ual – act for reproduction. (#s**ual meaning in Nepali language is यौन.)
Maturity – Full growth. (#maturity meaning in Nepali language is परिपक्वता, वयस्क.)
Emerge – come out. (#emerge meaning in Nepali language is उदय, प्रकट हुनु, निस्कनु.)
Fertilized – fused male gamete and female gamete. (#fertilized meaning in Nepali language is निषेचित, उर्वर बनाउनु.)
Nectar – sweet liquid from parts of a flowering plant. (#nectar meaning in Nepali language is अमृत.)