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Quiz Chapter 1: Biodiversity

10 questions ยท Form 2 Science Bab 1: Biodiversity

Question 1 of 10Score: 0

Which method represents an example of in-situ conservation?

Full Question List & Answer Key

Prefer reading to quizzing? All 10 questions are listed below with the answer and explanation under each one.

1. Which method represents an example of in-situ conservation?

  1. Setting up seed banks for endangered crops
  2. Establishing a national park to protect natural habitats
  3. Breeding animals inside a city zoo
  4. Cultivating wild flowers in a botanical garden
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Answer: B

In-situ conservation protects species within their natural habitat (e.g., national parks, forest reserves).

2. Why is ex-situ conservation necessary for certain endangered species?

  1. It lets wild species adapt faster to changing climate patterns
  2. It protects organisms when their natural habitats are heavily destroyed
  3. It removes the need for medical care and scientific monitoring
  4. It costs significantly less than establishing natural forest reserves
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Answer: B

Ex-situ conservation (like zoos or seed banks) provides a controlled environment to rescue species whose natural habitats are lost or unsafe.

3. Which organism is an example of an endemic species in Malaysia?

  1. African Elephant
  2. Rafflesia
  3. Panda Bear
  4. Kangaroo
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Answer: B

Rafflesia is an endemic plant native to specific rainforest areas in Malaysia and Southeast Asia.

4. How do reptiles differ from amphibians in terms of egg structures?

  1. Reptiles lay eggs covered with a hard or leathery shell
  2. Reptiles lay soft eggs covered in a jelly-like layer
  3. Amphibians lay eggs protected by a thick calcareous shell
  4. Reptiles do not lay eggs and always give birth to live young
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Answer: A

Reptile eggs have a protective leathery or hard shell to prevent dehydration on land, while amphibian eggs are laid in water surrounded by jelly.

5. Which of the following defines poikilothermic organisms?

  1. Organisms that generate internal body heat through metabolism
  2. Organisms whose body temperature fluctuates with their surroundings
  3. Organisms that maintain a strictly constant internal temperature
  4. Organisms capable of living only in aquatic ecosystems
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Answer: B

Poikilothermic animals (cold-blooded) cannot regulate their internal body temperature, so it changes based on the surrounding environment.

6. A balsam plant possesses a taproot system and leaves with network venation. How is it classified?

  1. Monocotyledonous plant
  2. Non-vascular spore plant
  3. Dicotyledonous plant
  4. Gymnosperm conifer
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Answer: C

Dicotyledonous plants feature taproots and netted (network) leaf venation.

7. An animal has moist skin, undergoes external fertilisation, and breathes through gills when young and through lungs and skin as an adult. Which group does it belong to?

  1. Reptiles
  2. Fish
  3. Amphibians
  4. Mammals
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Answer: C

Amphibians (like frogs and salamanders) live in both water and land, transitioning from breathing via gills as tadpoles to lungs and moist skin as adults.

8. What primary function does a dichotomous key serve in biology?

  1. Determining the exact age of fossilized organisms
  2. Systematically identifying and classifying organisms using paired traits
  3. Measuring the exact rate of photosynthesis in green plants
  4. Calculating the total biomass of a ecosystem
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Answer: B

Dichotomous keys allow scientists to identify unknown organisms based on a series of choices between two contrasting physical features.

9. How does human deforestation directly affect biodiversity?

  1. It increases the overall number of endemic species
  2. It causes habitat destruction, leading to species endangerment
  3. It promotes balanced food chains across ecosystems
  4. It expands natural in-situ conservation areas
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Answer: B

Deforestation destroys natural ecosystems, causing loss of food and shelter for wildlife and reducing global biodiversity.

10. Which plant group reproduces by producing spores and lacks a vascular system?

  1. Ferns
  2. Mosses
  3. Conifers
  4. Dicotyledons
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Answer: B

Mosses are non-vascular plants that reproduce via spores. Ferns also use spores but possess a vascular transport system.

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