Class 4 Exam > Class 4 Notes > Science for Class 4 > Worksheet: Reproduction in Animals - 2
Reproduction in Animals - 2 Class 4 Worksheet Science
Q1: Fill in the blanks.
(i) The eggs of fish are hatched into _________.
(ii) _________ the yellow round part of an egg.
(iii) The _________ lays the biggest egg in the world.
(iv) _________ feed their babies with their own milk.
(v) The larva that hatches out of a butterfly egg looks like a worm. It is called a _________.
Q2: True or False.
(i) All the living beings do not reproduce their own kind.
(ii) All animals feed their babies with their own milk.
(iii) The young ones of a cat is puppy.
(iv) Mammals are warm-blooded.
(v) A frog goes through four stages in its life cycle.
Q3: Multiple Choice Questions (MCQs).
(i) Which of the following is a method of asexual reproduction in animals?
(a) Fertilization
(b) Budding
(c) Mating
(d) Courtship
(ii) The male reproductive cell in animals is called:
(a) Ovum
(b) Zygote
(c) Sperm
(d) Embryo
(iii) The process of giving birth to offspring in animals is known as:
(a) Hatching
(b) Fertilization
(c) Reproduction
(d) Parturition
(iv) Which of the following is an example of an oviparous animal?
(a) Cow
(b) Frog
(c) Cat
(d) Dolphin
(v) How do fish reproduce?
(a) By laying eggs on land
(b) By laying eggs in water
(c) By giving birth to live young
(d) By producing seeds
(vi) The process by which a tadpole changes into an adult frog is called:
(a) Metamorphosis
(b) Pollination
(c) Germination
(d) Photosynthesis
(vii) Which animal exhibits external fertilization?
(a) Human
(b) Dog
(c) Snake
(d) Frog
(viii) The pouch-like structure in which a kangaroo carries its young one is called:
(a) Nest
(b) Cocoon
(c) Pouch
(d) Burrow
(ix) Which of the following is NOT a method of asexual reproduction?
(a) Budding
(b) Binary fission
(c) Fragmentation
(d) Sexual reproduction
(x) In which animals does regeneration occur, allowing them to re-grow lost body parts?
(a) Birds
(b) Insects
(c) Starfish
(d) Mammals
Q4: Answer the following questions.
(i) What is reproduction?
(ii) Who are mammals?
(iii) Name the smallest mammals.
(iv) Name two animals that lay their eggs in water.
(v) Name any five egg-laying animals.
(vi) Name two animals that do not take care for their young ones.
(vii) What are the life-stages of a butterfly?
You can find Worksheets Solutions here: Worksheet Solutions: Reproduction in Animals - 2
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FAQs on Reproduction in Animals - 2 Class 4 Worksheet Science
| 1. What is reproduction in animals? |  |
Ans. Reproduction in animals refers to the biological process of producing offspring, ensuring the continuation of a particular species. It involves the formation of new individuals from the existing ones through sexual or asexual means.
| 2. What are the different modes of reproduction in animals? | |
Ans. Animals can reproduce through various modes, including sexual reproduction and asexual reproduction. Sexual reproduction involves the fusion of male and female gametes, while asexual reproduction does not require the involvement of gametes and can occur through processes like budding, fission, regeneration, or parthenogenesis.
| 3. How does sexual reproduction occur in animals? | |
Ans. Sexual reproduction in animals involves the fusion of male and female gametes. The male reproductive organ produces sperm, which is transferred to the female reproductive organ during mating. Fertilization occurs when the sperm fuses with the female egg, resulting in the formation of a zygote. The zygote then develops into a new individual.
| 4. What is asexual reproduction in animals? | |
Ans. Asexual reproduction in animals is a mode of reproduction where new individuals are produced without the involvement of gametes or the fusion of genetic material from two parents. It can occur through various processes such as budding, where a new individual grows from an outgrowth of the parent organism, or fission, where the parent organism splits into two or more offspring.
| 5. What are the advantages and disadvantages of sexual and asexual reproduction in animals? | |
Ans. Sexual reproduction allows for genetic variation, which can enhance the adaptability and survival of a species. It also promotes the elimination of harmful genetic traits. However, it requires the presence of both male and female individuals and involves more complex processes. Asexual reproduction, on the other hand, allows for rapid population growth and does not require the search for a mate. However, it does not generate genetic diversity and may result in the accumulation of harmful mutations.
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