Why is reproduction a necessary part of the life cycle?

If it did not reproduce, a species would become extinct

Without reproduction, there would be too many of each species

If it did not reproduce, there would not be any young animals to look after the older animals

Without reproduction, animals would not continue to grow and develop

Which of these is the correct order of an insect's life cycle?

Egg → Larva → Pupa → Adult

Larva → Pupa → Egg → Adult

Egg → Pupa → Larva → Adult

Adult → Egg → Pupa → Larva

How Much Knowledge Do You Possess On The Animal Planet?

1.

Gestation is another name for pregnancy. Which of these animals has the longest gestation period?
- A.
  
  Dog
- B.
  
  Rat
- C.
  
  Elephant
- D.
  
  Human
Correct Answer
C. Elephant

Explanation
Elephants have the longest gestation period among these animals. The gestation period for elephants is approximately 22 months, which is significantly longer compared to other animals. Dogs have a gestation period of around 9 weeks, rats have a gestation period of about 3 weeks, and humans have a gestation period of around 9 months. Therefore, the elephant has the longest gestation period out of the given options.

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2.

Which adult animal looks very different when it is young?
- A.
  
  Lion
- B.
  
  Frog
- C.
  
  Turtle
- D.
  
  Elephant
Correct Answer
B. Frog

Explanation
Frogs are the correct answer because they undergo a process called metamorphosis, where they transform from aquatic tadpoles into terrestrial adults. Tadpoles have gills for breathing underwater, a long tail, and no legs, while adult frogs have lungs for breathing air, a short tail, and four legs. This drastic change in appearance makes frogs look very different when they are young compared to when they are adults.

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3.

A butterfly larva is called a caterpillar. In its next stage, what happens to the caterpillar?
- A.
  
  It dies
- B.
  
  It changes into a chrysalis
- C.
  
  It reproduces
- D.
  
  It changes into a butterfly
Correct Answer
B. It changes into a chrysalis

Explanation
The correct answer is that the caterpillar changes into a chrysalis. This is a natural process in the life cycle of a butterfly. After the larva stage, the caterpillar undergoes a transformation called metamorphosis. During this process, it forms a protective casing called a chrysalis or pupa. Inside the chrysalis, the caterpillar undergoes significant changes and eventually emerges as a butterfly. Therefore, the caterpillar does not die, reproduce, or directly change into a butterfly, but rather transforms into a chrysalis.

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4.

Why is reproduction a necessary part of the life cycle?
- A.
  
  If it did not reproduce, a species would become extinct
- B.
  
  Without reproduction, there would be too many of each species
- C.
  
  If it did not reproduce, there would not be any young animals to look after the older animals
- D.
  
  Without reproduction, animals would not continue to grow and develop
Correct Answer
A. If it did not reproduce, a species would become extinct

Explanation
Reproduction is a necessary part of the life cycle because if a species does not reproduce, it would eventually become extinct. Reproduction allows for the continuation of a species by producing offspring that inherit the genetic traits of their parents. Without reproduction, there would be no new individuals to replace the older ones as they die off, leading to the eventual decline and extinction of the species. Therefore, reproduction is crucial for the long-term survival and sustainability of a species.

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5.

Which of these is the correct order of an insect's life cycle?
- A.
  
  Egg → Larva → Pupa → Adult
- B.
  
  Larva → Pupa → Egg → Adult
- C.
  
  Egg → Pupa → Larva → Adult
- D.
  
  Adult → Egg → Pupa → Larva
Correct Answer
A. Egg → Larva → Pupa → Adult

Explanation
The correct order of an insect's life cycle is Egg -> Larva -> Pupa -> Adult. This is because most insects start their life cycle as eggs, which then hatch into larvae. The larvae go through several stages of growth and development before entering the pupal stage. During the pupal stage, the insect undergoes a transformation and eventually emerges as an adult.

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6.

In the human life cycle, which stage comes after childhood and before adulthood?
- A.
  
  Toddler
- B.
  
  Maturity
- C.
  
  Infancy
- D.
  
  Adolescence
Correct Answer
D. Adolescence

Explanation
Adolescence is the stage that comes after childhood and before adulthood in the human life cycle. It is a period of significant physical, psychological, and social changes, typically occurring during the teenage years. During this stage, individuals experience puberty, develop their identity, and undergo emotional and cognitive development. It is a time of transition and exploration, where individuals begin to establish their independence and prepare for the responsibilities of adulthood.

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7.

Cats give birth to kittens. The young of which of the following animals are also known as kittens?
- A.
  
  Horses
- B.
  
  Trout
- C.
  
  Rabbits
- D.
  
  Lions
Correct Answer
C. Rabbits

Explanation
Rabbits give birth to young ones that are also known as kittens. This term is commonly used to refer to the offspring of rabbits.

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8.

Which of the following species gives birth to live young?
- A.
  
  Robins
- B.
  
  Crocodiles
- C.
  
  Mosquitoes
- D.
  
  Mice
Correct Answer
D. Mice

Explanation
Mice give birth to live young. This is because mice are mammals, and mammals are characterized by giving birth to live offspring. Unlike birds (such as robins), reptiles (such as crocodiles), and insects (such as mosquitoes), which lay eggs, mice have internal fertilization and gestate their young inside their bodies until they are fully developed and ready to be born. Therefore, mice are the correct answer to the question.

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9.

Different animals have different life spans. Approximately how long is the average human life span?
- A.
  
  Between 10 and 20 years
- B.
  
  Between 30 and 40 years
- C.
  
  Between 50 and 60 years
- D.
  
  70 years or more
Correct Answer
D. 70 years or more

Explanation
The average human life span is typically 70 years or more. This is supported by data and research that shows improvements in healthcare, nutrition, and overall living conditions have led to increased life expectancy. Factors such as advancements in medical treatments, disease prevention, and lifestyle choices have contributed to longer lifespans for humans.

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10.

Which of the following is not a stage in an animal's life cycle?
- A.
  
  Birth
- B.
  
  Reproduction
- C.
  
  Feeding
- D.
  
  Death
Correct Answer
C. Feeding

Explanation
Feeding is not a stage in an animal's life cycle because it is a continuous process that occurs throughout an animal's life, rather than a distinct stage. Birth, reproduction, and death are all stages that occur in an animal's life cycle. During birth, the animal is born and enters the world. Reproduction involves the production of offspring, ensuring the continuation of the species. Death is the final stage in an animal's life cycle, marking the end of its life. Feeding, on the other hand, is a necessary activity that animals engage in to obtain nutrients and energy throughout their lives.

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11.

Which adult animal looks very different when it is young?
- A.
  
  Lion
- B.
  
  Frog
- C.
  
  Turtle
- D.
  
  Elephant
Correct Answer
B. Frog

Explanation
Frogs undergo a metamorphosis during their life cycle, which means they go through a significant physical transformation as they grow from tadpoles to adults. Tadpoles are aquatic and have gills for breathing, a long tail, and no legs. As they mature, they develop lungs for breathing air, their tail is absorbed, and they grow legs. The adult frog looks very different from its young form, making it the correct answer to the question.

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12.

Which of the following is not a stage in an animal's life cycle?
- A.
  
  Birth
- B.
  
  Reproduction
- C.
  
  Feeding
- D.
  
  Death
Correct Answer
C. Feeding

Explanation
Feeding is not a stage in an animal's life cycle because it is a continuous process that occurs throughout an animal's life, rather than being a distinct stage. Birth, reproduction, and death are all stages that occur in an animal's life cycle, but feeding is a necessary activity that takes place throughout the entire life span of an animal to sustain its growth, development, and survival.

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How Much Knowledge Do You Possess On The Animal Planet?

Gestation is another name for pregnancy. Which of these animals has the longest gestation period?

Which adult animal looks very different when it is young?

A butterfly larva is called a caterpillar. In its next stage, what happens to the caterpillar?

Why is reproduction a necessary part of the life cycle?

Which of these is the correct order of an insect's life cycle?

In the human life cycle, which stage comes after childhood and before adulthood?

Cats give birth to kittens. The young of which of the following animals are also known as kittens?

Which of the following species gives birth to live young?

Different animals have different life spans. Approximately how long is the average human life span?

Which of the following is not a stage in an animal's life cycle?

Which adult animal looks very different when it is young?

Which of the following is not a stage in an animal's life cycle?